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RS90GTX RS90GTAX RS90LTX RS90LTGTX

1. 58 Spark plugs checking 42 Specifications cccceceeeeeeeeeeeeeeeeeeeeeees 74 Speedometer unit 11 Starter choke lever 9 Starting the engine ccccseeeeeeeeeeeeeeeees 28 Steering System cccceecceseeeeeeeeeeeeeeeeees 59 Stopping the engine cecceecseeeeeeeeees 34 SOA Svcs sends cunneatcce e 72 Storage compartment 20 SUSPENSION reinicie ei ipeni racire ee EE Era 21 T Throttle cable free play adjusting 43 Throttle lever cccccseecsseeceeeeseeesseeeesaees 9 Throttle override system T O R S 10 Index Throttle override system T O R S CH CKIN Re nn ie TOokk sn reine TRAINS DOMINO ES seems Troubleshooting s cetcsasssiesttiant teens V gt YAMAHA YAMAHA MOTOR CO LTD PRINTED IN JAPAN 2007 05 0 6x1 CR PRINTED ON RECYCLED PAPER
2. YAMAHA OWNER S MANUAL RS90RX RS90GTX RS90GTAX RS90LTX RS90LTGTX LIT 12628 02 70 8GM 28199 10 ESU10040 WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm YAMAHA LIT CALIF 65 01 ESU10120 Congratulations on your purchase of a Yamaha snowmobile This model is the result of Yamaha s vast experience in the produc tion of fine sporting and touring snowmobiles lt represents the high degree of craftsmanship and reliability that have made Yamaha a lead er in these fields This manual will give you an understanding of the operation inspection and basic mainte nance of this snowmobile If you have any questions concerning the operation or main tenance of your snowmobile please consult a Yamaha dealer To maintain the high quality and performance of this snowmobile it is important that you and your Yamaha dealer pay close attention to the recommended maintenance schedules and operating instructions contained within this manual RS90RX RS90GTX RS90GTAX RS90LTX RS90LTGTX OWNER S MANUAL 2007 by Yamaha Motor Corporation U S A 1st Edition April 2007 All rights reserved Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation U S A is expressly prohibited Printed in Japan P N LIT 12628 02 70 Introduction Important manual information
3. ESU10150 EWS00010 PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPER ATING THE SNOWMOBILE NOTE _ e Yamaha continually seeks advancements in product design and quality Therefore while this manual contains the most current product information available at the time of printing there may be minor discrepancies between your snowmobile and this manual If there is any question concerning this manual please consult a Yamaha dealer e This manual should be considered a per manent part of this snowmobile and should remain with the snowmobile when resold Particularly important information is distin guished in this manual by the following nota tions A The Safety Alert Symbol means ATTEN TION BECOME ALERT YOUR SAFETY IS INVOLVED EWS00020 Failure to follow WARNING instructions could result in severe injury or death to the snowmobile operator a bystander or a person inspecting or repairing the snow mobile ECS00010 CAUTION A CAUTION indicates special precautions that must be taken to avoid damage to the snowmobile NOTE A NOTE provides key information to make procedures easier or clearer Contents Safety information cccsseseee 1 Pre operation checks sse 26 Location of the important labels 4 Pre operation check list 26 Descriptloh 2 2 22 7 Operation ss 28 Starting the engine 28 Control FUNCTIONS m mmccccces
4. Before starting the engine make sure that the tool kit is properly seated in its holder and is securely fastened NOTE gt If you do not have a torque wrench available during a service operation requiring one take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary ESU12891 Removing and installing the shroud and covers Shroud To remove the shroud Loosen the fasteners slowly raise the shroud and then unhook the shroud from the shroud stay 40 1 Fastener 2 Shroud To install the shroud Hook the end of the shroud onto the shroud stay slowly lower it to the original position and then tighten the fasteners 1 Shroud stay Left and right side covers To remove a side cover 1 Remove the shroud See the above pro cedure 2 Loosen the fasteners and then remove the side cover 1 Fastener 2 Right side cover 1 Fastener 2 Left side cover To install a side cover 1 Place the side cover in the original posi tion and then tighten the fasteners 2 Install the shroud NOTE Be sure to fit the projection on the rear of the side cover into the hole in the lower side cov er Top cover To remove the top cover 1 Remove the shroud See the above pro cedure 2 Remove the screws and then remove the cable guide Periodic maintenance 1 Screw 2 Cable guide 3 Loosen the quick fastener screws dis connect the main switch
5. posure to hazards Ride slowly and cau tiously when you ride off of established trails Hitting a rock or stump or running into wires could cause an accident and injury This snowmobile is not designed for use on surfaces other than snow or ice Use on dirt sand grass rocks or bare pave ment may cause loss of control and may damage the snowmobile Avoid operating on glare ice or on snow which has a lot of dirt or sand mixed in Operation under such conditions will damage or result in rapid wear of ski run ners drive track slide runners and drive sprockets Always ride with other snowmobilers when going on a ride You may need help if you run out of fuel have an accident or damage your snowmobile Many surfaces such as ice and hard packed snow require much longer stop ping distances Be alert plan ahead and Safety information begin decelerating early The best brak ing method on most surfaces is to release the throttle and apply the brake gently not suddenly Maintenance and storage 1 When laying the snowmobile on its side for maintenance use a suitable stand to keep it level 2 Do not leave the snowmobile on its left side for an extended period of time Fuel may leak out from the fuel breather hose 3 Modifications made to the snowmobile not approved by Yamaha or the removal of original equipment may render your snowmobile unsafe for use that may Cause severe personal injury Modifica tions m
6. tion and experience necessary to answer almost any questions about this warranty If the dealer is not able to do so he is expected to contact Yamaha Motor Corporation U S A for clarification or assistance CUSTOMER SERVICE If your machine requires warranty service you must take it to any authorized Yamaha snowmobile dealer within the continental United States Be sure to bring your warranty identification card or other valid proof of the original date of purchase If a question or problem arises regarding warranty first contact the owner of the dealer ship Since all warranty matters are handled at the dealer level this person is in the best position to help you If you are still not satisfied and require additional assistance please write YAMAHA MOTOR CORPORATION U S A CUSTOMER RELATIONS DEPARTMENT P O Box 6555 Cypress California 90630 Consumer information When contacting Yamaha Motor Corpora tion U S A be sure to include the model serial number names dates and receipts CHANGE OF ADDRESS The federal government requires each manufacturer of a motor vehicle to maintain a complete up to date list of all first purchasers against the possibility of a safety related defect and recall This list is compiled from the purchase registrations sent to Yamaha Motor Corporation U S A by the selling dealer at the time of your purchase If you should move after you have purchased your new snowmobile please advise
7. 0 cceseee 16 Carburetors cccccccceeeeeeeeeeeeeees 46 Auxiliary DC jack RS9OGT High altitude settings 46 RS90GTA RS9OLTGT 16 Valve clearance 46 Brake lever iicr 17 Engine oil and oil filter cartridge 47 Parking brake lever oseese 18 Cooling system n 50 Shift OVE f rana 18 VDO Rem r aie 52 Rear suspension damping force Drive chain housing Radiateurs 55 remote adjustment dial 19 Brake and parking brake 56 Shroud and covens jannaa 19 Skis and ski runners 58 Dnv guardi is ne 20 Steering system ee 59 V belt holders c cccecesseeseseereeeees 20 Drive track and slide runners 59 Storage compartment oe 20 IDFICALON aaisan n es 62 FL Nessa ees hate ad AAT 20 Replacing a headlight bulb 63 SUSPENSION 0 eeeeeseeeeeseeeseeeeeees 21 Adjusting the headlight beams 64 Contents Fittings and fasteners 0 64 Banely su nie uen 64 Replacing a fuse 65 Troubleshooting 68 Storage En un tn 72 Specifications 74 Consumer information 76 Identification number records 76 YAMAHA MOTOR CORPORATION U S A SNOWMOBILE LIMITED WARRANTY 77 YAMAHA EXTENDED SERVICE N S a 80 Safety information ESU10181 When you ride your snowmobile you must know and use
8. 5 Engine stop switch 18 Fuel level warning indicator 6 Thumb warmer adjustment switch 19 Oil level warning indicator 7 Throttle lever 20 Speedometer 8 Shift lever 21 Grip warmer indicator 9 Main switch 22 Select reset button 10 Auxiliary DC jack RS90GT RS9OGTA 23 Thumb warmer indicator RS90LTGT 24 Fuel meter and grip thumb warmer level in 11 Starter choke lever dicator 12 Tachometer 25 Odometer tripmeter 13 Low coolant temperature indicator light NOTE gt e The snowmobile you have purchased may differ slightly from those shown in the figures of this manual e Design and specifications are subjected to change without notice ESU10281 Main switch The main switch controls the ignition and lighting systems The various positions are described below 1 Off 2 On 3 Start Off The ignition circuit is switched off The key can be removed only in this position On The ignition circuit is switched on Start The starting circuit is switched on The starter motor cranks the engine ECS00020 CAUTION Release the switch immediately after the engine starts NOTE The headlights meter lighting and taillights come on after the engine is started ESU10300 Starter choke lever Use the starter choke lever when starting and warming up a cold engine Control functions 1 Starter choke lever NOTE Refer to the Starting the engine section on page 28 for proper opera
9. Checking the drive track EWS00490 Do not operate the snowmobile if you find damage to the drive track or if it has been maladjusted Drive track damage or failure could result in loss of braking ability and snowmobile control which could cause an accident Check the drive track for deflection wear and damage Adjust or replace if necessary See the fol lowing section for more details Measuring the drive track deflection 1 Lay the snowmobile on its side 2 Measure the drive track deflection with a spring scale Pull at the center of the drive track with a force of 100 N 10 kg 22 Ib 1 Spring scale 60 NOTE m Measure the gap between the slide runner and the edge of the track window Measure both sides 1 Drive track deflection Standard drive track deflection RS90GT 30 0 35 0 mm 1 18 1 38 in RS90GTA 30 0 35 0 mm 1 18 1 38 in RS90LT 25 0 30 0 mm 0 98 1 18 in RS90LTGT 25 0 30 0 mm 0 98 1 18 in RS90R 30 0 35 0 mm 1 18 1 38 in 3 If the deflection is incorrect adjust the drive track Adjusting the drive track EWS00500 e Be sure to have a Yamaha dealer make this adjustment e Support the snowmobile securely on a suitable stand before working under neath the snowmobile e Operate the engine in a well ventilated area 1 Lift the rear of the snowmobile onto a suit able stand to raise the drive track off the ground 2 Loosen the rear axle nut Period
10. If necessary gradually let off on the throttle or steer to the outside of the turn Remember Avoid higher speeds until you are thoroughly familiar with the operation of your snowmo bile Riding uphill You should practice first on gentle slopes Try more difficult climbs only after you have de veloped your skill As you approach a hill ac celerate before you start the climb and then reduce the throttle to prevent track slippage It is also important to keep your weight on the uphill side at all times On climbs straight up the hill this can be accomplished by leaning forward and on steeper inclines standing on the running boards and leaning forward over the handlebar Also see Traversing a slope Slow down as you reach the crest of the hill and be prepared to react to obstacles sharp drops or other vehicles or people which may be on the other side If you are unable to con tinue up a hill do not spin the track Stop the engine and set the parking brake Then pull the rear of the snowmobile around to point the snowmobile back down the hill When the snowmobile is pointed downhill mount your snowmobile from the uphill side Restart the engine release the parking brake and de scend the hill EWS00230 Side hills and steep slopes are not recom mended for a novice snowmobiler Riding downhill When riding downhill keep speed to a mini mum It is important to apply just enough throttle to keep the
11. The auxiliary DC jack cannot be used if the engine is not running To use the auxiliary DC jack 1 Start the engine 2 Open the auxiliary DC jack cap and then insert the accessory power plug into the jack Control functions 1 Auxiliary DC jack cap 2 Auxiliary DC jack NOTE 2 After using the auxiliary DC jack be sure to remove the accessory power plug from the jack and close the auxiliary DC jack cap ECS00120 CAUTION e Do not use accessories requiring more than the maximum rated capacity for the auxiliary DC jack This may overload the circuit and cause the fuse to blow See page 65 for the specified amperage e Do not use an automotive cigarette light er or other accessory with a plug that gets hot because the jack can be dam aged Maximum rated capacity DC 12 V 2 5 A 30 W ESU10570 Brake lever The snowmobile is stopped by braking the en tire drive system Squeeze the brake lever towards the handle bar grip to stop the snowmobile 1 Brake lever NOTE 2 y When the brake lever is operated the brake light will illuminate ECS00060 CAUTION Make sure that the brake lever end does not project out over the handlebar end This will help prevent brake lever damage when the snowmobile is placed on its side for service RS90GT RS90GTA RS9OLTGT The brake lever is equipped with a position adjuster To adjust the brake lever position 1 Loosen the locknut 2 While lightly pushi
12. because the alcohol content in the fuel increases the chance for water to en ter the engine Use Yamaha Stor Rite Engine Fogging Oil or an equivalent fogging oil to protect both the combustion chamber and crankshaft from corrosion An alternate meth od is to remove the air filter case and squirt oil into the carburetor throats while the engine is running 72 ECS00680 CAUTION Do not attempt to store the snowmobile by simply starting the engine occasionally during the storage period This can cause more harm than good Moisture and acids form during combustion which can actual ly increase the chance for corrosion dam age during the storage period Surface protection Apply a coat of wax to painted surfaces Apply suitable protectants to the exterior of the en gine drive track and to other metal plastic and rubber parts Battery EWS00610 e Never smoke around the battery while it is being charged Sparks may ignite the hydrogen gas created by the battery e Disconnect the negative lead first then the positive lead from the battery e Connect the positive lead first then the negative lead to the battery when install ing the battery e Never connect the battery to or discon nect it from the snowmobile while it is being charged Sparks may ignite the hydrogen gas created by the battery e Make sure that the battery terminals are tight Remove the battery from the snowmobile Store it in a cool dry place t
13. 1 866 937 3983 866 YES EXTD or visit our web site All you need to do is provide your vehicle s Primary ID number your Tunnel number We ll be happy to help you get the Y E S coverage you need Yamaha Service Marketing PO Box 6555 Cypress CA 90630 1 866 937 3983 www yamaha motor com Y YAMAHA EXTENDED SERVICE A Air filter checking Auxiliary DC jack RS90GT RS9O0GTA RS9OLTGT B DAT E RE tn Lens Brake and parking brake Brake levels Break in cccccccceeecseeceseeceseeceeeeceueesaees C Carburetors cccccccseseeeeeeeeeeeeeseeeeeeees Control rod adjusting Coolant temperature warning indicator Cooling System s ies D Drive Chain housing Drive guard Drive track and slide runners Drive track life maximizing DIVINO eeen e tee canta Seatac nee sagen E Engine idling speed adjusting Engine oil and oil filter cartridge Engine overheating prevention system Engine stop switch F Fittings and fasteners ig cl eer Re eran rere reer rer eran tre Fuel level warning indicator 0 Fuel meter and grip thumb warmer level indicator FUS6 TOPlACINQissiuss ss iinet ivennalezen General maintenance an
14. 77781 E0 Cleaning with alkaline or acid cleaner gasoline or solvent will damage windshield e Use neutral detergent Safety information 4 5 RS90R RS9OLT WARNING WARNING DO NOT OPERATE ENGINE WITHOUT V BELT OR DRIVE GUARD This unit contains high pressure nitrogen gas Mishandling can cause explosion AVERTISSEMENT e Read owners manual for instructions NE PAS FAIRE FONCTIONNER LE e Do not incinerate puncture or open MOTEUR SANS COURROIE EN V OU PROTECTEUR D EMBRAYAGE YAMAHA 8BD 77762 00 A AV E RTI SS E M E N T Cette unit contient de l azote haute pression 5 RS90GT RS90GTA RS90LTGT Une mauvaise manipulation peut entra ner d explosion e Voir le manuel d utilisateur pour les instructions 6 e Ne pas brdler ni perforer ni ouvrir WARNING 4AA 22259 60 This unit contains high pressure nitrogen gas Mishandling can cause explosion e Read owners manual for instructions e Do not incinerate puncture or open AVERTISSEMENT Cette unit contient de l azote haute pression Une mauvaise manipulation peut entra ner d explosion e Voir le manuel d utilisateur pour les instructions e Ne pas br ler ni perforer ni ouvrir 4AA 22259 70 7 RS9OLT RS9OLTGT WARNING AVERTISSEMENT NO PASSENGERS OR CARGO ON AUCUN PASSAGER OU MARCHANDISE THIS TRACK COVER SUR LE PROTECTEUR DE CHENILLE It was not designed to carry weight Ce protecteur n a pas t con u po
15. Installation of parts or accessories that are not qual itatively equivalent to genuine Yamaha parts Abnormal strain neglect or abuse Lack of proper maintenance Accident or collision damage Modification to original parts oo NON A SPECIFIC EXCLUSIONS from this warranty shall include parts replaced due to normal wear or routine maintenance including oil spark plugs clutch drive belts slide runners and track THE CUSTOMER S RESPONSIBILITY under this warranty shall be to 1 Operate and maintain the snowmobile as specified in the appropriate Owner s Manual 2 Give notice to an authorized Yamaha snowmobile dealer of any and all apparent defects within ten 10 days after discovery and make the machine avail able at that time for inspection and repairs at such dealers place of business You may locate your nearest authorized Yamaha dealer through your local telephone directory WARRANTY TRANSFER To transfer any remain ing warranty from the original purchaser to any subse quent purchaser it is imperative that the machine be inspected and registered for warranty by an authorized Yamaha snowmobile dealer In order for this warranty to remain in effect this inspection and registration must take place within ten 10 days after ownership transfer An inspection and registration fee will be charged for this service EMISSION CONTROL SYSTEM WARRANTY Yamaha Motor Corporation USA also warrants to the ultimate pu
16. RS9OLTGT 25 0 30 0 mm 0 98 1 18 in RS9OR 30 0 35 0 mm 1 18 1 38 in Length on ground RS90GT 768 mm 30 2 in RS90GTA 768 mm 30 2 in RS9OLT 960 mm 37 8 in RS9OLTGT 960 mm 37 8 in RS9OR 768 mm 30 2 in Rear suspension Type Slide rail suspension Track sprocket wheel Material Polyethylene Number of teeth 9 Transmission Clutch type Automatic centrifugal engagement Ratio range 3 80 1 00 1 Sheave distance 267 0 270 0 mm 10 51 10 63 in Sheave offset 13 5 16 5 mm 0 53 0 65 in Engagement speed Subject to change according to elevation settings RS90GT 3300 3700 r min RS90GTA 3300 3700 r min RS9OLT 3400 3800 r min RS9OLTGT 3400 3800 r min RS90R 3300 3700 r min Shift speed Subject to change according to elevation settings Usually achieved after approximately 800m 0 5 mi traveled 8250 8750 r min Drive chain type Silent chain enclosed in oil bath Reverse system Yes Secondary reduction ratio RS90GT 38 22 1 73 RS90GTA 38 22 1 73 RS9OLT 39 22 1 77 RS9OLTGT 39 22 1 77 RS90R 38 22 1 73 Secondary reduction ratio R 2 27 Fuel tank capacity 36 2 L 9 56 US gal 7 96 Imp gal Engine oil quantity With oil filter cartridge replacement 2 5 L 2 64 US qt 2 20 Imp qt Without oil filter cartridge replacement 2 3 L 2 43 US qt 2 02 Imp qt Total amount 3 2 L 3 38 US qt 2 82 Imp qt Brake Type Hydraulic disc type ventilated disc Operation Handle lev
17. a spark plug shows a dis tinctly different color there could be some thing wrong with the engine For example a very white center electrode porcelain color could indicate an intake track air leak or car buretion problem for that cylinder Do not at tempt to diagnose such problems yourself Instead take the snowmobile to a Yamaha dealer for inspection and possible repairs 42 You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode Consult a Yamaha dealer before changing to a different type of spark plug Specified spark plug Manufacturer NGK Model CR8E Spark plugs are produced in several different thread lengths The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion If the reach is too long overheating and engine damage may result If the reach is too short spark plug fouling and poor performance may result Al so if the reach is too short carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage Al ways use a spark plug with the specified reach Spark plug reach 19 0 mm 0 75 in 1 Spark plug gap 2 Spark plug reach Before installing any spark plug measure the electrode gap with a wire thickness gauge and adjust to specification Spark plug gap 0 7 0 8 mm 0 028 0 031 in When installing the spark plug al
18. air fil ter case and then remove the air filter Case n UN 3 NA Yva Oil tank breather hose clamp Oil tank breather hose N 6 Disconnect the negative battery lead 7 Replace the blown fuse with one of the proper amperage pS 1 HEAD headlight fuse 2 SIG signal fuse SN 3 DC TERM auxiliary DC jack fuse 4 Q 4 C W carburetor warmer fuse Na AN Go SA ANAO 5 IGN ignition fuse NO AHE ped 6 Spare fuse rae QA L YG Specified fuses 9 f Main fuse LL 1 30 0 A 1 Main fuse Se semi Wee 2 Spare main fuse HEAD headlight fuse 20 0A SIG signal fuse 10 0A DC TERM auxiliary DC jack fuse 3 0A C W carburetor warmer fuse 20 0A IGN ignition fuse 20 0A Spare fuses 20 0 A 10 0 A 3 0 A 66 8 Connect the negative battery lead 9 Install the air filter case by reversing the removal steps ECS00640 CAUTION Be sure to connect the breather hoses se curely when installing the air filter case 10 Connect the headlight couplers and speedometer coupler and then install the headlight unit making sure to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit 11 Install the headlight unit bolts and then tighten them to the specified torque Headlight unit bolt tightening torque 3 Nm 0 3 m kgf 2 2 ft lb 12 Install the
19. and then install the left side cover and the shroud To replace and adjust the V belt EWS00410 e Never run the engine with the V belt or drive guard removed e When installing the new V belt make sure that it is positioned properly Other wise the V belt clutch engagement speed will be changed and the snowmo bile may move unexpectedly when the engine is started which could cause an accident e Have a Yamaha dealer make this adjust ment 1 Edge of the secondary sheave assembly 2 Spacer ECS00510 CAUTION As the V belt wears adjustment may be necessary To ensure proper clutch per formance the V belt position should be adjusted by adding a spacer on each ad justing bolt when the V belt position reaches 1 5 mm 0 06 in below the edge of the secondary sheave assembly Periodic maintenance Have a Yamaha dealer make this adjust ment NOTE _ _ __ _ _ ___ Apply the parking brake before replacing the V belt 1 Remove the shroud and the left side cov er and then remove the drive guard See page 40 for removal procedures 2 Rotate the secondary sliding sheave clockwise and push it so that it separates from the secondary fixed sheave 1 Secondary sliding sheave 2 Secondary fixed sheave 3 Pull the V belt up over the secondary fixed sheave 4 Remove the V belt from the secondary sheave assembly and primary sheave assembly 53 Periodic maintenance 5 Tempor
20. coupler and aux iliary DC jack coupler RS90GT RS90GTA RS9OLTGT and then re move the top cover 1 Quick fastener screw 2 Top cover To install the top cover 1 Connect the main switch coupler and auxiliary DC jack coupler RS9OGT RS90GTA RS90LTGT place the top cover in the original position and then tighten the quick fastener screws 2 Pass all of the cables etc through the cable guide place the cable guide in the Original position and then install the screws 3 Install the shroud 41 Periodic maintenance EWS00090 e Do not drive the snowmobile with the shroud or covers unfastened or re moved e Keep your body and clothing away from rotating parts when servicing the snow mobile with the shroud or covers re moved e Do not touch the hot muffler and engine during or immediately after operation ECS00370 CAUTION Make sure that all cables leads etc are routed properly before installing the shroud and covers NOTE yy When installing the shroud and covers be sure to tighten all fasteners securely ESU11780 Checking the spark plugs The spark plug is an important engine compo nent and is easy to inspect The condition of the spark plug can indicate the condition of the engine Check the coloration on the white porcelain insulator around the center electrode The ideal coloration at this point is a medium to a light tan color for a snowmobile that is being ridden normally If
21. cover and the top cover See page 40 for re moval procedures 4 Remove the right lower cover and the bottom panel 2 Dipstick NOTE ___ The engine oil should be between the H and L level marks on the dipstick 1 Bottom panel 1 H level mark 2 L level mark 6 If the engine oil is below the L level mark add sufficient oil of the recom mended type to raise it to the H level mark See page 74 for the recommend ed oil ECS00461 CAUTION e When adding the engine oil be careful not to fill above the H level mark on the 1 Right lower cover dipstick 5 Place an oil pan under the oil tank to col e Use only 4 stroke engine oil lect the used oil e Make sure that no foreign material en 6 Disconnect the oil level gauge coupler ters the engine oil tank 48 Fa E AYE Sey NO Oil level gauge coupler Oil filler cap Remove the oil filler cap the cylinder head cap and the engine oil drain bolt to drain the oil from the oil tank Engine oil drain bolt oil tank Place an oil pan under the engine to col lect the used oil Remove the engine oil drain bolt to drain the oil from the crankcase Periodic maintenance 1 Engine oil drain bolt crankcase 2 V mark NOTE e A YV mark is stamped on the crankcase near the engine oil drain bolt e Dispose of used oil according to local regu lations S
22. every 20000 km 12000 mi of op eration To check the engine oil level 1 Place the snowmobile on a level surface and apply the parking brake Periodic maintenance 2 Start the engine warm it up for 10 15 minutes and then turn it off NOTE e The engine can also be warmed up by op erating the snowmobile for 10 15 minutes e After operating the snowmobile allow the engine to idle for at least 10 seconds before turning it off 3 Remove the shroud and the right side cover See page 40 for removal proce dures 4 Disconnect the oil level gauge coupler 1 Oil level gauge coupler 2 Oil filler cap ECS00451 CAUTION Disconnect the oil level gauge coupler be fore removing the oil filler cap otherwise the cable could twist and break 5 Remove the oil filler cap wipe the dipstick clean insert it back into the oil filler hole without screwing it in and then remove it again to check the oil level 47 Periodic maintenance 7 Insert the dipstick into the oil filler hole 1 and then tighten the oil filler cap vy 8 Connect the oil level gauge coupler 9 Install the right side cover and the shroud To change the engine oil with or without oil fil ter cartridge replacement 1 Place the snowmobile on a level surface and apply the parking brake i 2 2 Start the engine warm it up for several minutes and then turn it off 1 Oil filler cap 3 Remove the shroud the right side
23. might result in engine overheating must be avoided Operating your snowmobile for the first time Start the engine and let it idle for 15 minutes 0 160 km 0 100 mi Avoid prolonged operation above 6000 r min 160 500 km 100 300 mi Avoid prolonged operation above 8000 r min 500 km 300 mi and beyond The snowmobile can now be operated nor mally ECS00340 CAUTION e After 800 km 500 mi of operation the engine oil must be changed and the oil filter cartridge replaced e If any engine trouble should occur dur ing the engine break in period immedi ately have a Yamaha dealer check the snowmobile ESU11331 Riding your snowmobile Getting to know your snowmobile A snowmobile is a rider active vehicle and your riding position and your balance are the two basic factors of maneuvering your snow mobile Riding your snowmobile requires skills ac quired through practice over a period of time Take the time to learn the basic techniques well before attempting more difficult maneu vers Riding your new snowmobile can be a very enjoyable activity providing you with hours of pleasure However it is essential to familiar ize yourself with the operation of the snowmo bile to achieve the skill necessary to enjoy riding safely Before operating the snowmo bile read this Owner s Manual completely and understand the operation of the controls Pay particular attention to the safety informa tion on page 1 Operati
24. side cover and the shroud ESU11861 Checking the throttle override system T O R S Check the T O R S for proper operation EWS00351 When checking the T O R S e Make sure that the parking brake is ap plied e Make sure that the throttle lever moves smoothly e Do not rev the engine to the point that the clutch engages otherwise the snow mobile could start moving which could cause an accident 1 Start the engine NOTE ___ Refer to the Starting the engine section on page 28 2 Hold the pivot point of the throttle lever away from the throttle switch by putting your thumb above and forefinger be low between the throttle lever pivot and the engine stop switch housing While holding the pivot point as described above press the throttle lever gradually 44 1 Throttle lever pivot 2 Engine stop switch housing 3 Throttle lever The T O R S will be activated and the engine speed will be limited to less than the clutch engagement speed See page 74 for the clutch engagement speed EWS00361 If the engine speed does not decrease to less than the clutch engagement speed stop the engine by turning the main switch to the off position and consult a Yamaha dealer ESU12920 Checking the air filter Always check that there is no snow under the air filter element frame 1 Remove the shroud the left side cover the right side cover and the top cover See page 40 for removal procedur
25. specification 1 Distance A 2 Distance B Ski toe out distance A distance B 0 0 15 0 mm 0 00 0 59 in 3 Ifthe alignment is not correct consult a Yamaha dealer ESU12151 Steering system Check the handlebar for excessive free play To check the handlebar 1 Push the handlebar up and down and back and forth Periodic maintenance 2 Turn the handlebar slightly to the right and left If excessive free play is felt consult a Yamaha dealer ESU12171 Drive track and slide runners Drive track EWS00480 A broken track track fittings or debris thrown by the drive track could be danger ous to an operator or bystanders Observe the following precautions e Do not allow anyone to stand behind the snowmobile when the engine is running e When the rear of the snowmobile is raised to allow the drive track to spin a suitable stand must be used to support the rear of the snowmobile Never allow anyone to hold the rear of the snowmo bile off the ground to allow the drive track to spin Never allow anyone near a rotating drive track e Inspect the drive track condition fre quently Replace damaged slide metal Replace the drive track if it is damaged to the depth where fabric reinforcement material is visible or support rods are broken Otherwise track damage or fail ure could result in loss of braking ability and snowmobile control which could cause an accident 59 Periodic maintenance
26. spongy have Yamaha dealer bleed hy draulic system e Check brake pads for wear e Replace if necessary e Check fluid level in master cylinder e f necessary add recommended brake fluid to specified level e Check hydraulic system for leakage e Check that there is no snow under the air filter ele Air filter ment e If necessary brush off the snow 26 Pre operation checks ITEM CHECKS ro PANNES OMMOnTeOL lis Check for proper placement equipment Shvoud and cover e Make sure that the shroud and covers are securely 19 fastened e Check for wear and damage Skis and ski runners e If necessary have Yamaha dealer replace skis or 58 ski runners Drive track e Check for deflection wear and damage 59 e If necessary have Yamaha dealer replace track e Check for wear and damage Slide runners e f necessary have Yamaha dealer replace slide runners Steering o e Check for excessive free play Lights signals and switch e Check operation 16 15 63 64 es e Correct if necessary e Make sure that operation is smooth and spring VAOS EVEN back to its home position when released En e Check the T O R S for proper operation e If system is defective have Yamaha dealer check vehicle Throttle override system T O R S 27 Operation ESU11290 Starting the engine e Be sure to check the SAFETY INFOR MATION section carefully before start ing the engine e Make sure that the parking brake i
27. tank brake disc and cool ant hoses will be very hot after the engine has been run Avoid contact while they are still hot with any part of your body or cloth ing during inspection or repair To check the drive chain housing oil level 1 Place the snowmobile on a level surface Periodic maintenance Remove the shroud and the right side cover See page 40 for removal proce dures Remove the dipstick wipe it off with a clean rag and then insert it back into the filler hole We 0 IN Dipstick Remove the dipstick and check that the oil is between the maximum and mini mum level marks If the oil is below the minimum level mark add sufficient oil of the recommended type to raise it to the maximum level mark ie N 1 Maximum level mark 2 Minimum level mark 95 Periodic maintenance S Kt l Al Ie e AW i FF or MI TAIE ETES N XQ Recommended drive chain oil SAE 75W or 80W API GL 4 Gear oil ECS00530 CAUTION Make sure that no foreign material enters the drive chain housing 5 Install the dipstick making sure to align the notch in the dipstick handle with the projection on the drive chain housing ae RS 1 Ss ae D at 7 Re GE 1 Notch 2 Projection 6 Install the right side cover and the shroud To adjust the chain tension 1 Remove the shroud and the right side cover See page 40 for removal proce dures 2 Loos
28. top cover the right side cover the left side cover and the shroud NOTE 2 If the fuse immediately blows again ask a Yamaha dealer to inspect the snowmobile Periodic maintenance 67 Troubleshooting ESU12960 Engine turns over but does not start 1 Fuel system No fuel supplied to combustion chamber e No fuel in tank Supply fuel e Clogged fuel line Clean fuel line e Clogged carburetor Clean carburetor Fuel supplied to combustion chamber e Flooded engine too much choke Crank engine with throttle open or wipe the spark plugs dry 2 Electrical system Poor spark or no spark e Spark plugs are dirty with carbon or are wet Remove carbon or wipe the spark plugs dry Replace if necessary e Faulty ignition system Ask a Yamaha dealer to inspect e T O R S malfunction Disconnect the throttle switch connectors and connect the wire harness connectors together to bypass the T O R S oC Uz Nie De A EWS00560 e Before bypassing the T O R S make sure that the throttle returns properly to the fully closed position e The T O R S is an important safety de vice in the case of a malfunction take the snowmobile to a Yamaha dealer im mediately for repair 68 3 Compression Insufficient e Loose cylinder head nuts Tighten nuts properly e Worn or damaged gasket Replace gas ket e Worn or damaged piston and cylinder Ask a Yamaha dealer to inspect Discharged battery If the battery i
29. under the air filter element frame ESU11910 Carburetors The carburetors are an important part of the engine and its emission control system which require very sophisticated adjustment There fore carburetor adjustments should be left to a Yamaha dealer who has the necessary pro fessional knowledge and experience ESU11940 High altitude settings Operating at high altitude reduces the perfor mance of a gasoline engine about 3 for ev ery 305 m 1000 ft of elevation This is because there is less air as altitude increases Less air means less oxygen available for combustion Your snowmobile can be adjusted to over come most of the problems found in high alti tude riding Carburetor adjustments are the most important Less air at high altitude makes the air fuel ratio too rich which can cause poor performance Common problems are hard starting bogging and plug fouling Proper carburetion adjustments will correct the air fuel ratio Be sure to have a Yamaha dealer make these adjustments Remember Less air at higher altitude means there is less horsepower available even with proper car buretion Expect acceleration and top speed to be reduced at higher altitudes TO overcome operating with less power at high altitudes your snowmobile may also re quire different settings for the drive chain gears and V belt clutch to avoid poor perfor mance and rapid wear If you plan to operate your snowmobile at an altitude di
30. 77 in RS90GT RS9OGTA RS9OLTGT 129 0 mm 5 08 in The spring seat length changes ap proximately 1 5 mm 0 06 in with each full turn of the adjusting ring ESU10921 Adjusting the ski damping force RS90GT RSIOGTA RS9IOLTGT ECS00260 CAUTION The damping forces for the left and right ski shock absorbers must be adjusted to the same settings Uneven settings can cause poor handling and loss of stability Compression damping force The compression damping force of each ski shock absorber can be adjusted by turning the compression damping force adjusting knob To increase the compression damping force turn the adjusting knob in direction a To de crease the compression damping force turn the adjusting knob in direction b Control functions Rebound damping setting Minimum soft 20 click s in direction b Standard 12 click s in direction b Maximum hard 3 click s in direction b With the adjusting knob fully turned in direction a 1 Compression damping force adjusting knob Compression damping setting Minimum soft 12 click s in direction b Standard 7 click s in direction b Maximum hard 2 click s in direction b With the adjusting knob fully turned in direction a Rebound damping force The rebound damping force of each ski shock absorber can be adjusted by turning the re bound damping force adjusting knob To increase the rebound damping force t
31. GHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE SPECIAL EARLY SEASON WARRANTY EX TENSION A special warranty extension is available for all new Yamaha snowmobiles purchased between June 1 and December 1 All new Yamaha snowmobiles purchased between June 1 and December 1 will have the warranty extended to November 30 of the following year YAMAHA MOTOR CORPORATION U S A Post Office Box 6555 Cypress California 90630 78 WARRANTY QUESTIONS AND ANSWERS Q A What costs are my responsibility during the warranty period The customer s responsibility includes all costs of normal maintenance services non warranty repairs accident and collision damages as well as oil spark plugs clutch drive belts and slide runners What are some examples of abnormal strain ne glect or abuse These terms are general and overlap each other in areas Specific examples include Running the ma chine out of oil hitting an object submerged under snow operation on surfaces other than snow or ice operating the machine with a broken or damaged part which causes another part to fail and so on If you have any specific questions on operation or maintenance please contact your dealer for advice May perform any or all of the recommended main tenance shown in the Owner s Manual instead of having the dealer do them Yes if you are a qualified snowmobile mechanic and follow the procedures spec
32. L Drink large quantities of wa ter or milk Follow with milk of magne sia beaten egg or vegetable oil Call physician immediately e EYES Flush with water for 15 minutes and get prompt medical attention Batteries produce explosive gases Keep sparks flame cigarettes etc away Venti late when charging or using in an en closed space Always shield your eyes when working near batteries KEEP OUT OF THE REACH OF CHILDREN ESU12950 Replacing a fuse EWS00550 Be sure to use the specified fuse A wrong fuse could cause electrical system dam age or A FIRE HAZARD ECS00631 CAUTION Be sure to turn the main switch to the off position and disconnect the negative bat tery lead to prevent accidental short cir cuiting 1 Remove the shroud the left side cover the right side cover and the top cover See page 40 for removal procedures 2 Remove the headlight unit bolt on each side of the snowmobile disconnect the headlight couplers and speedometer coupler and then remove the headlight unit Periodic maintenance 1 Headlight unit bolt 3 Disconnect the cylinder head breather hose and unhook the air filter case fas tener tip E 1 Cylinder head breather hose 2 Fastener 4 Loosen the joint clamp bolts 1 Joint clamp bolt 65 Periodic maintenance 5 Lift up the air filter case slide the oil tank breather hose clamp down disconnect the oil tank breather hose from the
33. a Yamaha dealer ECS00550 CAUTION Brake fluid may deteriorate painted sur faces or plastic parts Never spill any fluid If any is spilled clean it up immediately Place the snowmobile on a level surface Check that the brake fluid is above the lower level and replenish when necessary 1 Lower level Changing the brake fluid EWS00470 Make sure that the brake fluid and the above parts are replaced by a Yamaha dealer Brake fluid replacement is necessary when the following components are replaced during the periodic maintenance or if they are dam aged or leaking e All oil seals of the master cylinder and cali per cylinder e The brake hose ESU12141 Skis and ski runners Check the skis and ski runners for wear and damage Replace if necessary 1 Ski runner wear limit ER 2 i Nee et Ts oo e vd 1i MM Specified brake fluid eT et DOT 4 Pals eee ee RTE Se 58 1 1 Ski wear limit Ski runner wear limit 8 mm 0 31 in Ski wear limit 12 mm 0 47 in ECS00560 CAUTION Avoid scratching the skis when loading and unloading the snowmobile when riding in areas with little or no snow or on sharp edges such as concrete curbs etc This will wear or damage the skis To align the skis 1 Turn the handlebar so the skis face straight ahead 2 Check the following for ski alignment e Skis are facing forward e Ski toe out distance A distance B is within
34. ack fittings or debris thrown by the track could be dangerous to the oper ator or bystanders Handle fuel with care it is HIGHLY FLAMMABLE e Never add fuel when the engine is run ning or hot Allow the engine to cool for several minutes after running e Use an approved fuel container AN Safety information e Fill the fuel tank outdoors with extreme care Never remove the fuel cap in doors Never fill the fuel tank indoors e Never refuel while smoking or in the vi cinity of an open flame e Make sure that the fuel tank cap is closed securely after refueling Wipe up any spilled fuel immediately 9 10 If you swallow some gasoline inhale a lot of gasoline vapor or get some gasoline into your eyes see your doctor immedi ately If any gasoline spills on your skin or clothing immediately wash your skin with soap and water and change your clothes Wear protective clothing Wear an ap proved helmet and a face shield or gog gles Also wear a good quality snowmobile suit boots and a pair of gloves or mittens that will permit use of your thumbs and fingers for operation of the controls Operation Do not run the engine indoors except when starting the engine to transport the snowmobile in or out of the building Open the outside doors exhaust fumes are dangerous a Be careful where you ride There may be obstacles hidden beneath the snow Stay on established trails to minimize your ex
35. arily install the new V belt on the secondary sheave assembly only and then measure the V belt position Do not force the V belt between the sheaves the secondary sliding and fixed sheaves must touch each other 1 Edge of the secondary sheave assembly 2 V belt position Standard V belt position From 1 5 mm 0 06 in above the edge of the secondary sheave assembly to 0 5 mm 0 02 in below the edge 6 Ifthe V belt position is incorrect adjust it AT 1 2 1 V belt position adjusting bolt 2 Spacer More than 1 5 mm 0 06 in above the Remove spacer edge Not necessary It is correct Add spacer From 1 5 mm 0 06 in above the edge to 0 5 mm 0 02 in below the edge More than 0 5 mm 0 02 in below the edge by removing or adding a spacer on each 7 Tighten the V belt position adjusting V belt position adjusting bolt 54 bolts V belt position adjusting bolt tightening torque 10 Nm 1 0 m kgf 7 2 ft lb 8 Install the V belt over the primary sheave assembly 9 Rotate the secondary sliding sheave clockwise and push it so that it separates from the secondary fixed sheave 1 Secondary sliding sheave 2 Secondary fixed sheave 10 Install the V belt between the secondary sliding and fixed sheaves 1 11 Install the drive guard and then install the left side cover and the shroud ESU12100 Drive chain housing EWS00430 The engine oil
36. ay also make the snowmobile ille gal to use 4 Never store the snowmobile with fuel in the fuel tank inside a building where igni tion sources are present such as hot wa ter and space heaters an open flame sparks clothes dryers and the like Allow the engine to cool off before storing the snowmobile in an enclosed space 5 Always refer to the STORAGE section on page 72 if the snowmobile is to be stored for an extended period 6 Maintain or replace safety and instruction labels as necessary A Safety information ESU10231 Location of the important labels Please read the following labels carefully before operating this snowmobile NOTE Maintain or replace safety and instruction labels as necessary A WARNING A AVERTISSEMENT SEVERE INJURY OR DEATH MAY RESULT IF YOU IGNORE ANY AFIN D VITER TOUT RISQUE DE BLESSURE SERIEUSE OU MEME OF THE FOLLOWING Read the Owner s Manual and all labels before operating this vehicle This vehicle is a high performance machine It should be operated by an experienced operator Check throttle brake and steering for ri operalion before starting engine Set panong brake before attempting to start engine Never run this vehicle with the parking brake applied To stop engine in an emergency push the engine stop switch down Do not operate engine without drive belt or drive guard Make sure the fuel tank cap ls closed securely after refueling Do not op
37. ck connecting lead are seated securely in the lead holders Electric starter does not operate or operates slowly e Engine stop switch is pushed in Pull it out e Faulty wire connections Check connec tions or ask a Yamaha dealer to inspect e Discharged battery Charge battery or see Starting the engine with a discharged bat tery above e Seized engine Seizure is caused by poor lubrication inadequate fuel or an air leak Ask a Yamaha dealer to inspect e Hydrostatic lock occurs when fuel has filled the cylinders when the vehicle has been transported Remove the spark plugs and turn the engine over several times with the ignition off to expel excess fuel Ask a Yamaha dealer to inspect 70 Engine power is low e Low coolant temperature indicator light is flashing Warm the engine up e Faulty spark plugs Clean or replace the spark plugs e Incorrect carburetor jetting for altitude or temperature Ask a Yamaha dealer to in spect e Improper fuel flow See Engine turns over but does not start Fuel system above e Incorrect V belt clutch settings for altitude or conditions Ask a Yamaha dealer to in spect Engine constantly backfires or mis fires e Faulty spark plugs Replace the spark plugs e Clogged fuel system See Engine turns over but does not start Fuel system above e Malfunctioning T O R S See Engine turns over but does not start Electrical system above Engin
38. clutch engaged while de scending the hill This will allow you to use en gine compression to help slow the snowmobile and to keep the snowmobile from rolling freely down the hill Also apply the brake frequently with light pressure EWS00240 Use extra caution when applying the brake during a descent Excessive braking will cause the drive track to lock causing a loss of control Operation Traversing a slope EWS00250 Traversing slopes is not recommended for a novice snowmobiler Traversing a slope requires you to properly position your weight to maintain proper bal ance As you travel across the slope lean your body to position your weight towards the uphill side A recommended riding position is to kneel with the knee of your downhill leg on the seat and the foot of your uphill leg on the running board This position will make it easi er for you to shift your body weight as needed Snow and ice are slippery so be prepared for the possibility that your snowmobile could be gin to slip sideways on the slope If this hap pens steer in the direction of the slide if there are no obstacles in your path As you regain proper balance gradually steer again in the direction you wish to travel If your snowmobile starts to tip steer down the hill to regain balance EWS00260 If you are unable to maintain correct bal ance and your snowmobile is going to tip over dismount your snowmobile immedi ately on the u
39. d lubrication chart Grip thumb warmer adjustment switch H Headlight beam switch Headlight beams adjusting 0 Headlight bulb replacing High beam indicator light High altitude settings Identification numbers L Label locations ccccccceaceceeeeeceeeueceaeas Index Low coolant temperature indicator light 12 LUDTIC ATION sr nn eur 62 M MA SWINGIN is ed is 9 O Oil level warning indicator 14 P Parking brake lever 18 Part locations ccceceececseeeseeeeseeeeeeeeeeees 7 Periodic maintenance chart for the emission control system 36 Pre operation check list 26 R Rear suspension damping force ACIUISUNG serine naines 24 Rear suspension damping force remote adjustment dial 19 Rear suspension spring preload ASIA UNS uso neces 23 Riding your snowmobile 29 S Safety information 1 Self diagnosis device 15 Shift lever 18 Shroud and covers ccccceeeeeceeeeeeeeeeees 19 Shroud and covers removing and installing 40 Ski damping force adjusting RS9O0GT RS90GTA RSYOLTGT 22 Ski spring preload adjusting 6 22 Skis and Ski runners
40. d and that it is tightly fitted to the locknut or the control rod adjuster Control functions 25 Pre operation checks ESU11070 The condition of a snowmobile is the owner s responsibility Vital components can start to de teriorate quickly and unexpectedly even if the snowmobile remains unused for example as a result of exposure to the elements Any damage or fluid leakage could have serious conse quences Therefore it is very important in addition to a thorough visual inspection to check the following points before each ride NOT ee Pre operation checks should be made each time the snowmobile is used Such an inspection can be accomplished in a very short time and the added safety it assures is more than worth the time involved EWS00190 If any item in the pre operation check list is not working properly have it inspected and repaired before operating the snowmobile ESU11080 Pre operation check list ITEM CHECKS e Check fuel level e Refuel if necessary e Check fuel line for leakage e Check oil level in engine e If necessary add recommended oil to specified level e Check vehicle for oil leakage e Check coolant level Add if necessary e Check for wear and damage He e Replace if necessary 2 e Make sure that drive guard is tightened securely Drive guard e Check the drive guard mounts for damage e Make sure that the drive guard is firmly in place e Check operation e f soft or
41. e overheats e Insufficient coolant Add coolant Air in cooling system Bleed the cooling sys tem or ask a Yamaha dealer to inspect e Leaking coolant Ask a Yamaha dealer to inspect Snowmobile does not move e Malfunctioning V belt clutch Ask a Yamaha dealer to inspect e Drive track does not move Foreign object is caught in the drive track or slide runners have melted to the slide metal due to lack of lubrication e Tight loose or broken drive chain Ask a Yamaha dealer to inspect V belt twists e Improper V belt Replace with the correct V belt e Incorrect V belt clutch offset Ask a Yamaha dealer to inspect e Loose or broken engine mount s Ask a Yamaha dealer to inspect V belt slips or becomes extremely hot e Oily or dirty V belt or primary and second ary sheave assembly surfaces Clean e Problem with the driveline See V belt twists above Engine does not upshift or downshift properly or engages harshly e Worn or damaged V belt Replace the V belt or ask a Yamaha dealer to inspect e Incorrect V belt clutch settings for altitude or conditions Ask a Yamaha dealer to in spect e Worn or sticking primary sheave assembly Ask a Yamaha dealer to inspect e Worn or sticking secondary sheave assem bly Ask a Yamaha dealer to inspect Noise or excessive vibration in drive chain and sprockets e Broken V belt clutch components Ask a Yamaha dealer to inspect e Worn or damaged bearings A
42. e page 47 for engine oil level checking procedures and add engine oil if necessary ESU10511 Coolant temperature warning indicator 2 If the engine overheats the coolant tempera ture warning indicator and the warning light come on When this occurs stop the engine immediately and allow the engine to cool down and then check the coolant level in the coolant reservoir See page 50 for checking procedures r ORANY N U am mpo SMAL F Eh 1 Coolant temperature warning a oe 2 Warning light A ECS00040 CAUTION Do not operate the engine if it overheats ESU10522 Self diagnosis device This model is equipped with a self diagnosis device for various electrical circuits If any of those circuits are defective the warn ing light and the self diagnosis warning indi cator will flash and a two digit error code will flash slowly in the tripmeter odometer display Control functions Sy a 1 D NY Q am Led 3 9 1 Warning light A 2 Self diagnosis warning indicator lt 3 3 Two digit error code EWS00052 e If the self diagnosis warning indicator and warning light flash continuously and an error code is displayed during operation there may be some problem with an electrical circuit couplers etc e Stop the engine and allow it to cool off Then check that the electrical circuits couplers etc in the engine compart ment are co
43. ect and fully charge it For peak performance it is recommended that you have your snowmobile checked and tuned by a Yamaha dealer The dealer has the experience and training to help you get the maximum performance and use out of your Yamaha snowmobile Storage 73 Specifications ESU12462 Dimensions Overall length RS90GT 2755 mm 108 5 in RS90GTA 2755 mm 108 5 in RS9OLT 3000 mm 118 1 in RS9IOLTGT 3000 mm 118 1 in RS9OR 2755 mm 108 5 in Overall width 1225 mm 48 2 in Overall height 1160 mm 45 7 in Dry weight RS90GT 254 0 kg 559 Ib RS90GTA 254 0 kg 559 Ib RS9OLT 263 0 kg 577 Ib RS90OLTGT 264 0 kg 577 Ib RS9OR 253 0 kg 557 Ib Ski stance 1086 mm 42 8 in Engine Type Liquid cooled 4 stroke 12 valves Cylinder arrangement Backward inclined parallel 3 cylinder Displacement 973 0 cms Bore x stroke 79 0 x 66 2 mm 3 11 x 2 61 in Idling speed 1300 1500 r min Engine oil Recommended grade API service SG type or higher JASO standard MA Type SAE OW 30 Carburetor Manufacturer KEIHIN Model x quantity CVK40 x 3 Fuel Type REGULAR UNLEADED GASOLINE ONLY Minimum pump octane R M 2 86 Starting system Electric starter 74 Chassis Drive track Material Molded rubber fiberglass rod reinforced Type Internal drive type Width 381 mm 15 0 in Deflection RS90GT 30 0 35 0 mm 1 18 1 38 in RS90GTA 30 0 35 0 mm 1 18 1 38 in RS9OLT 25 0 30 0 mm 0 98 1 18 in
44. en the locknut 3 Turn the chain tension adjusting bolt clockwise until it is finger tight and then loosen it 1 4 turn 4 Hold the chain tension adjusting bolt in place while tightening the locknut 56 1 Locknut 2 Chain tension adjusting bolt 5 Install the right side cover and the shroud ESU12130 Brake and parking brake EWS00440 e A soft spongy feeling in the brake lever indicates a failure in the brake system e Do not operate the snowmobile if you find any problems in the brake system You could lose braking ability which could lead to an accident Ask a Yamaha dealer to inspect and repair the brake system ECS00060 CAUTION Make sure that the brake lever end does not project out over the handlebar end This will help prevent brake lever damage when the snowmobile is placed on its side for service Test the brake at a low speed when starting out to make sure that it is working properly If the brake does not provide proper braking performance inspect the brake for wear or brake fluid leakage See the following section for more details Checking the brake pads Check the brake pads for wear If the brake pads reach the wear limit ask a Yamaha dealer to replace them hil 1 Brake pad wear indicator 2 Brake pad wear limit Brake pad wear limit 7 5 mm 0 30 in Checking the parking brake pads Check the parking brake pads for wear by measuring the thickness of the pads If the par
45. engine oil be careful not to fill above the H level mark on the dipstick e Use only 4 stroke engine oil e Make sure that no foreign material en ters the engine oil tank 17 Start the engine and then let it idle for several minutes while checking it for oil leakage If oil is leaking immediately turn the engine off and make sure that the en gine oil drain bolts the cylinder head cap and the oil filler cap are installed correct ly 18 Turn the engine off and then connect the oil level gauge coupler ECS00470 CAUTION If oil is leaking or the oil level warning indi cator comes on when the engine is run ning immediately turn the engine off and have a Yamaha dealer check the snowmo bile Continuing to operate the engine un der such conditions could cause severe engine damage 19 Install the bottom panel and the right low er cover 20 Install the top cover the right side cover and the shroud ESU12940 Cooling system The coolant level should be checked before each ride In addition the cooling system must be bled of air at the intervals specified in the periodic maintenance and lubrication chart EWS00380 Do not remove the coolant reservoir cap when the engine is hot Scalding hot fluid and steam may be blown out under pres sure which could cause serious injury When the engine has cooled place a thick rag or towel over the coolant reservoir cap and slowly rotate the cap counter clockw
46. epairs aren t pro rated You don t have any out of pocket expenses for covered repairs e In addition Travel and Recreation Interruption Protection TRIP is included at no extra cost TRIP gives you up to 150 reimbursement per occurrence for any reasonable expenses you incur because your Yamaha needs cov ered service replacement vehicle rental emergency towing phone calls even food and lodging when you are away from home This superb coverage goes into effect when you purchase Y E S so it applies to any war ranty repairs as well as covered repairs dur ing your entire Y E S plan period e Y E S coverage is honored at any authorized Yamaha dealer nationwide e Y E S coverage is transferable to a new owner if you sell or trade in That can make your Yamaha much more valuable 80 This excellent Y E S plan coverage is only avail able to Yamaha owners like you and only while your Yamaha is still within the Yamaha Limited Warranty period So visit your authorized Yamaha dealer to get all the facts He can show you how easy it is to protect your investment with Yamaha Extended Service We urge you to act now You ll get the excellent benefits of TRIP coverage right away and you ll rest easy knowing you ll have strong factory backed protection even after your Yamaha Lim ited Warranty expires See your dealer today A special note If visiting your dealer isn t convenient contact Yamaha toll free at
47. er left hand operated Throttle Operation Handle lever right hand operated Electrical system Ignition system T C Spark plug Manufacturer NGK Model CR8E Gap 0 7 0 8 mm 0 028 0 031 in Battery Model YTX20L BS Voltage capacity 12 V 18 0 Ah Ten hour rate amperage 1 8 A Bulb voltage wattage x quantity Headlight 12 V 60 55 W x 2 Headlight bulb type Halogen bulb Tail orake light 12 V 5 21W x2 Specifications Meter lighting 14 V 50 mA x 6 High beam indicator light 14 V 80 mA x 1 Warning light 14 V 80 mA x 1 Low coolant temperature indicator light 14 V 80 mA x 1 15 Consumer information ESU12480 Identification number records Record the frame serial number engine serial number Primary ID and key identification number in the spaces provided for assistance when ordering spare parts from a Yamaha dealer Also record and keep the ID numbers in a separate place in case the snowmobile is sto len Frame serial number The frame serial number is the seventeen digit number stamped on the frame of the snowmobile aaa 1 T T T T T T 1 L L L 1 Frame serial number r TT T T T 1 L e 4 Engine serial number Primary ID The engine serial number is stamped in the location as shown 76 1 Engine serial number Key identification number The key identification
48. er to FWD or REV until it stops completely and only while the engine is idling e Make sure that the area behind the snowmobile is clear before reversing Watch behind e Reduce speed and avoid sharp turning when operating the snowmobile in re verse 1 To select the desired operating position pull the shift lever out slide it to FWD or to REV until it stops and then release it 1 Pull out 2 Slide to FWD forward 3 Release 33 Operation 1 Pull out 2 Slide to REV reverse 3 Release ECS00070 CAUTION Do not shift from FWD to REV or from REV to FWD while the snowmobile is moving Otherwise the drive system could be damaged NOTE gt The reverse buzzer beeps while the shift lever is in reverse 2 Release the parking brake by moving the parking brake lever to the right 3 Press the throttle lever slowly to move the snowmobile 4 Turn the handlebar in the desired direc tion 5 Squeeze the brake lever to stop the snowmobile 34 6 Apply the parking brake by moving the parking brake lever to the left ESU11410 Stopping the engine Turn the main switch to the off position to stop the engine 1 1 Off EWS00330 e Push down the engine stop switch to stop the engine in an emergency e Make sure that the key is removed from the main switch whenever the operator leaves the snowmobile to prevent acc
49. erate this vehicle on public roads You could collide with another vehicle This vehicle is designed for operator only no passengers Check lever position Forward or Reverse before moving Wear an approved helmet eye protection and adequate clothing for snowmobiling Eviter de nettoyer le pare brise avec une solution alcaline ou acide ainsi qu avec de l essence ou un diluant Utiliser un d tergent neutre MORTELLE VEUILLEZ SUIVRE LES RECOMMANDATIONS SUIVANTES Avant utiliser ce v hicule lire le manuel du propri taire et toutes les tiquettes Ce v hicule est une machine haute performance Elle doit tre conduite par un conducteur exper iment Avant de d marrer le moteur v rifier l op ration du frein de l acc l rateur et de la direction Le frein de s curit doit tre appliqu lors du d marrage s curit actionn E Ne pas rouler avec le frein de En cas d urgence utiliser l interrupteur d arr t du moteur Ne pas laisser tourner le moteur sans la courroie ou sans son garde que le bouchon du r servoir soit bien referm apr s le Afin d viter tout risque d collision ne pas rouler sur un chemin public Ce v hicule est con u pour un conducteur seul aucun passager V rifier la position du levier marche avant ou arri re avant d tre en marche Toujours porter un casque approuv et un habil de motoneigiste Pr voir une protection pour les yeux BFR
50. es Periodic maintenance 2 Remove the headlight unit bolton each 7 Lift up the air filter element frame and side of the snowmobile check the air filter element If there is any snow on the air filter element remove the element brush off the snow and then in stall the air filter element 1 Headlight unit bolt 3 Unfasten the plastic band around the wire harness 1 Plastic band 8 Place the air filter element frame in the Original position and then install the air filter case cover Hook the fasteners onto the air filter case cover ILK 1 10 Connect the cylinder head breather hose De sen 11 Install the headlight unit making sure to insert the projections on the headlight unit stay into the slots on the bottom of the headlight unit 4 Disconnect the cylinder head breather hose 5 Unhook the air filter case cover fasteners 9 1 Cylinder head breather hose 6 Slightly lift up the headlight unit and then remove the air filter case cover 45 Periodic maintenance N 4 PET MNT 12 Install the headlight unit bolts and then tighten them to the specified torque Headlight unit bolt tightening torque 3 Nm 0 3 m kgf 2 2 ft lb 13 Place the wire harness in the original po sition and then fasten the plastic band around it 14 Install the top cover the right side cover the left side cover and the shroud NOTE 2 After riding the snowmobile make sure that there is no snow
51. esss 9 Break IM sn ue nn tes 28 Main SWitCh eeeeeeeeseceeeeeeeeeeeeees 9 Riding your snowmobile 29 Starter choke lever ceceeeeeee 9 Maximizing drive track life 32 Throttle lever 9 Driving siens dut lan Co Ne nn 33 Engine overheating prevention Stopping the engine 34 BV SUC I ccs tanto dieu sane r ch ucaabeces 10 Transporting 0 eee eee 34 Throttle override system TORS ere ee eer ee 10 Periodic maintenance 36 Speedometer unit ccceeeeee 11 Periodic maintenance chart for High beam indicator light 12 the emission control system 36 Low coolant temperature General maintenance and indicator light s es 12 lubrication Chart 0 eee 38 Fuel meter and grip WOOD KIL mn sa ne 40 thumb warmer level indicator 13 Removing and installing Fuel level warning indicator 14 the shroud and covers 40 Oil level warning indicator 14 Checking the spark plugs 42 Coolant temperature warning Adjusting the engine INdiCATOF ann 15 idling speed 0 eee eeeteeteteeeeee 43 Self diagnosis device 15 Adjusting the throttle cable Engine stop SWitCh 15 free play de en ne 43 Headlight beam switch Checking the throttle override SVG EN a nce 16 system T O R S scenes 44 Grip thumb warmer Checking the air filter 44 adjustment switch
52. fferent from the area where you bought it be sure to con sult a Yamaha dealer The dealer can tell you if there are any changes necessary for the al titude where you plan to ride ECS00430 CAUTION The drive chain gears and V belt clutch should be adjusted when operating above a high altitude of 900 m 3000 ft Consult a Yamaha dealer ESU11950 Valve clearance The valve clearance changes with use result ing in improper air fuel mixture and or engine noise To prevent this from occurring the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance chart ESU12930 Engine oil and oil filter cartridge The engine oil level should be checked before each use In addition the oil must be changed and the oil filter cartridge replaced at the inter vals specified in the periodic maintenance and lubrication chart EWS00370 Engine oil is extremely hot immediately af ter the engine is turned off Coming into contact with or getting any engine oil on your clothes could result in burns ECS00480 CAUTION e Do not run the engine with too much or not enough oil in the oil tank Oil could spray out or the engine could be dam aged e Be sure to change the engine oil after the first 800 km 500 mi of operation and every 4000 km 2500 mi thereafter or at the start of a new season other wise the engine will wear quickly e The oil filter cartridge should be re placed
53. free play and or replace Brake and parking pads if necessary e Change brake fluid e Make sure that operation is smooth e Lubricate if necessary e Check for slight free play e Lubricate shaft with specified grease as required Periodic maintenance Seasonally ITEM or 4000 km 2500 mi 200 hr f e Check toe out steering system gens a e Check bearing assemblies for i looseness steenng bearings e Lubricate with specified grease Ski and front sus e Lubricate with specified 62 pension grease Suspension compo Lubricate with specified 62 nent grease e Make sure that all nuts bolts Fittings and fasten and screws are properly tight 64 ers ened e Tighten if necessary Batter e Check condition d e Charge if necessary It is recommended that these items be serviced by a Yamaha dealer NOTE Brake system e After disassembling the master cylinder or caliper cylinder always change the brake fluid Regularly check the brake fluid level and add fluid if necessary e Replace the oil seals of the master cylinder and caliper cylinder every two years e Replace the brake hose every four years or if cracked or damaged 39 Periodic maintenance ESU11740 Tool kit The owners tool kit has the tools which are sufficient for most periodic maintenance and minor repairs A torque wrench is also neces sary to properly tighten nuts and bolts 1 Tool kit ECS00360 CAUTION
54. glass part of the bulb 8 Install the bulb holder cover and then connect the headlight coupler 9 Install the headlight access panel and the top cover 64 ESU12270 Adjusting the headlight beams 1 Remove the top cover See page 40 for removal procedures 2 Use a Phillips screwdriver to turn the headlight beam adjusting screw and ad just the headlight beams To lower the headlight beams turn the headlight beam adjusting screw in direction a To raise the headlight beams turn the head light beam adjusting screw in direction b b lt a S a OX sty VE 1 1 Headlight beam adjusting screw 3 Install the top cover ESU12290 Fittings and fasteners Check the tightness of the fittings and fasten ers Tighten in proper sequence and torque if nec essary ESU12300 Battery This snowmobile is equipped with a sealed type MF battery which does not require any maintenance There is no need to check the electrolyte or to add distilled water To charge the battery Have a Yamaha dealer charge the battery as soon as possible if it seems to have dis charged Keep in mind that the battery tends to discharge more quickly if the snowmobile is equipped with electrical accessories EWS00540 Battery electrolyte is poisonous and dan gerous It contains sulfuric acid and can cause severe burns Avoid contact with skin eyes or clothing ANTIDOTE e EXTERNAL Flush with water e INTERNA
55. hat is above 0 C 32 F but less than 30 C 90 F Check the condition of the battery once a month and charge it as necessary ECS00690 CAUTION e Always keep the battery charged Stor ing a discharged battery can cause per manent battery damage e To charge a sealed type MF battery a special constant voltage battery charger is required Using a convention al battery charger will damage the bat tery If you do not have access to a sealed type MF battery charger have a Yamaha dealer charge your battery e Do not charge the battery quickly Charge the battery for 10 hours at 1 8 amperes Drive track Loosen the drive track and block up the chas sis so that the track is suspended above the ground V belt Remove the V belt and store separately Storage Store the snowmobile in a dry well ventilated place out of direct sunlight Put a fabric cover over the snowmobile preferably one that is designed for it Do not use a plastic or vinyl cover condensation could be trapped un derneath which could increase the chances of rusting Returning to service after storage When returning your snowmobile to service install the V belt and battery and adjust the drive track Remove the spark plugs and clean or replace them if necessary Perform all other pre oper ation and seasonal maintenance checks list ed in the periodic maintenance chart NOTE 2 Before installing the battery have a Yamaha dealer insp
56. headlights are switched on See page 16 for headlight beam switch operation 12 A High beam indicator light ZO ESU10481 Low coolant temperature indi cator light F The low coolant Res indicator light comes on when the coolant temperature is low and informs the rider that the snowmobile should be warmed up After the engine is started warm it up until the indicator light goes off 1 D A S rar kini 1 Low coolant temperature indicator light cok 2 Warning light A 3 Self diagnosis warning indicator g 4 Two digit code 86 The snowmobile can be operated normally af ter the indicator light goes off NOTE P Operate the snowmobile at low speeds when the low coolant temperature indicator light is on If the engine speed is too high the warn ing light and self diagnosis warning indicator will flash and the two digit code 86 will flash in the tripmeter odometer display When this occurs maximum engine speed is reduced to protect the engine ESU10421 Fuel meter and grip thumb warmer level indicator The fuel meter and grip thumb warmer level indicator have eight segments which show the amount of fuel remaining in the fuel tank the grip warmer level or the thumb warmer level SSC mea BEBE 1 Fuel meter and grip thumb warmer level in dicator EDILO Fuel meter The display segments of the fuel meter disap pear towa
57. i dental starting ESU11420 Transporting When transporting your snowmobile on a trail er or in a truck observe the following recom mendations to help protect it from damage e Make sure that the fuel level in the fuel tank is lower than the bottom of the carburetors Otherwise the vibration and bumps from the road surface could make it possible for fuel to flow through the carburetors into the cylinders This can result in hydrostatic lock a condition where the engine cannot rotate because of fuel accumulated in the engine Severe engine damage can result from hydrostatic lock When possible the fuel tank should be empty during transpor tation especially if the trip takes longer than 30 minutes If transporting the snowmobile in an open trailer or truck put a tight fitting cover on the snowmobile A cover specifically designed for your snowmobile is best This will help keep foreign objects out of the cooling vents in the shroud and also help protect the snowmobile against damage from debris on the road If transporting the snowmobile in an open trailer or truck in areas where road salt is used coat metal suspension surfaces light ly with oil or another protectant This will help protect against corrosion Be sure to clean the snowmobile when you get to your destination to remove any corrosive salts Operation 35 Periodic maintenance ESU11450 Safety is an obligation of the owner Periodic inspect
58. ic maintenance 1 Rear axle nut 1 Left adjusting nut 3 Start the engine and rotate the drive track 2 Might adjusting nut one or two turns Stop the engine Shifted to right 4 Check the drive track alignment with the 1 slide runners If the alignment is incorrect align the drive track by turning the left and right adjusting nuts Forward Gap Slide runner Drive track 5 Slide metal Shifted to left Ron 1 Slide runner Drive track Shifted to f rena SONT AGIUSI Turn in Turn out ing nut Forward Gap Slide runner Drive track Slide metal O1 B D 61 Periodic maintenance 5 Adjust the drive track deflection to speci fication Drive track More than Less than specified specified deflection Turn out Left adjusting Turn in Turn out nut Right adjust i ee RC ECS00591 CAUTION The right and left adjusting nuts should be turned an equal amount 6 Recheck alignment and deflection If nec essary repeat steps 3 to 5 until the prop er adjustment is achieved 7 Tighten the rear axle nut Rear axle nut tightening torque 75 Nm 7 5 m kgf 54 ft lb Slide runners Check the slide runners for wear and dam age If the slide runners reach the wear limit they should be replaced 1 Slide runner 2 Wear limit height Slide runner wear limit height 10 5 mm 0 41 in 62 ECS00350 CAUTION Ride on fresh snow frequently Operating o
59. ified in the Owner s and Service Manual We do recommend however that items requiring special tools or equipment be done by a Yamaha snowmobile dealer Under what conditions is the clutch not covered by warranty Clutches as well as clutch components wear with use Normal wear is not covered under warranty such service is the customer s responsibility Abnormal wear is however covered for one 1 year from the date of purchase Your Yamaha snowmobile dealer possesses criteria as to what constitutes abnormal wear Will the warranty be void or canceled if do not operate or maintain my new Yamaha exactly as specified in the Owner s Manual No The warranty on a new Yamaha cannot be voided or canceled However if a particular failure is caused by operation or maintenance other than as shown in the Owner s Manual that failure may not be covered under warranty Q What responsibility does my dealer have under this warranty A Each Yamaha snowmobile dealer is expected to 1 Completely set up every new machine before sale 2 Explain the operation maintenance and warranty requirements to your satisfaction at the time of sale and upon your request at any later date 3 In addition each Yamaha snowmobile dealer is held responsible for his setup service and warranty repair work Q Whom should contact if have further questions about this warranty A Your Yamaha snowmobile dealer has the informa
60. ion adjustment and lubrication will keep your snowmobile in the safest and most efficient condition possible The most important points of snowmobile inspection adjustment and lubrication are explained on the following pages Maintenance replacement or repair of the emission control devices and systems may be performed by any repair establishment or individual that is certified if applicable EWS00340 If you are not familiar with maintenance work have a Yamaha dealer do it for you PROPER PERIODIC MAINTENANCE OF YOUR SNOWMOBILE IS IMPORTANT IN ORDER TO ENJOY LONG PLEASURABLE SERVICE ESPECIALLY IMPORTANT ARE THE MAIN TENANCE SERVICES RELATED TO EMISSION CONTROL THESE CONTROLS NOT ONLY FUNCTION TO ENSURE CLEANER AIR BUT ARE ALSO VITAL TO PROPER EN GINE OPERATION AND MAXIMUM PERFORMANCE IN THE FOLLOWING PERIODIC MAINTENANCE CHARTS THE SERVICES RELATED TO EMISSION CONTROL ARE GROUPED SEPARATELY THESE SERVICES REQUIRE SPECIALIZED DATA KNOWL EDGE AND EQUIPMENT YAMAHA DEALERS ARE TRAINED AND EQUIPPED TO PER FORM THESE PARTICULAR SERVICES ESU11460 Periodic maintenance chart for the emission control system INITIAL EVERY imon S al ITEM or 800 km 4000 km TA ia 2500 mi 200 hr e Check condition Spark plugs e Adjust gap and clean e Replace if necessary Valve clearance H e Check and adjust valve clear Every ae al 25000 ance when engine is cold Crankeace breather ea es hose for cracks Een e Replace if nece
61. ise to the detent This procedure al lows any residual pressure to escape When the hissing sound has stopped press down on the cap while turning coun terclockwise and remove it 1 Coolant reservoir cap To check the coolant level 1 Remove the shroud and the right side cover See page 40 for removal proce dures 2 Check the coolant level in the coolant reservoir when the engine is cold If the coolant level is below the COLD LEVEL mark add coolant until it reaches the COLD LEVEL mark See the following section Replenishing the coolant for more details Periodic maintenance 4 LEVEL KA a SV I NE SG F 1 COLD LEVEL mark ECS00490 CAUTION e Hard water or salt water is harmful to the engine parts You may use boiled or dis tilled water if soft water is not available e Tap water can be used temporarily in an emergency 3 Install the right side cover and the shroud Bleeding the cooling system The cooling system must be bled of air if the coolant reservoir becomes empty if air can be seen in the cooling system or if there is a cooling system leak Consult a Yamaha deal er ECS00500 CAUTION Operating the engine with an improperly bled cooling system can cause overheat ing and severe engine damage Replenishing the coolant 1 Remove the shroud the right side cover and the top cover See page 40 for re moval procedures 2 Remove the coolant
62. king brake pads reach the wear limit ask a Yamaha dealer to replace them EE 1 Parking brake pad wear limit Parking brake pad wear limit 1 2 mm 0 047 in To adjust the parking brake As the parking brake pads wear adjustment may be necessary to ensure proper brake performance EWS00450 Be sure to have a Yamaha dealer make this adjustment Periodic maintenance Loosen the parking brake pad locknut and the parking brake pad adjusting bolt Loosen the parking brake cable locknut Turn the parking brake cable adjusting bolt in or out to adjust the cable length 1 2 Brake disc Parking brake pad locknut Parking brake pad adjusting bolt Parking brake cable locknut Parking brake cable adjusting bolt Parking brake cable length Parking brake cable length 43 5 46 5 mm 1 713 1 831 in Tighten the parking brake cable locknut Turn the parking brake pad adjusting bolt in or out to adjust the clearance between the parking brake pads and the brake disc Parking brake pad 57 Periodic maintenance Parking brake pad to brake disc clear ance a b 1 5 2 0 mm 0 059 0 079 in 6 Tighten the parking brake pad locknut Checking the brake fluid level EWS00460 Be careful that water does not enter the master cylinder when refilling Water will significantly lower the boiling point of the fluid and may result in vapor lock If the brake fluid level goes down consult
63. kip steps 10 12 if the oil filter cartridge is not being replaced 10 Remove the oil filter cartridge with an oil filter wrench 1 Oil filter cartridge NOTE An oil filter wrench is available at a Yamaha dealer 11 Apply a thin coat of engine oil to the O ring of the new oil filter cartridge 12 Install the new oil filter cartridge with an oil filter wrench and then tighten it to the specified torque 49 Periodic maintenance Tightening torque Oil filter cartridge 17 Nm 1 7 m kgf 12 ft lb 13 Install the engine oil drain bolts and then tighten them to the specified torques Tightening torques Engine oil drain bolt crankcase 10 Nm 1 0 m kgf 7 2 ft lb Engine oil drain bolt oil tank 16 Nm 1 6 m kgf 11 ft lb 14 Add 1 5 L 1 6 US qt 1 3 Imp qt of the recommended engine oil to the oil tank and then install and tighten the oil filler cap and the cylinder head cap Recommended engine oil See page 74 Oil quantity With oil filter cartridge replacement 2 5 L 2 64 US qt 2 20 Imp qt Without oil filter cartridge replacement 2 3 L 2 43 US qt 2 02 Imp qt Total amount 3 2 L 3 38 US qt 2 82 Imp qt 15 Start the engine warm it up for several minutes and then turn it off 16 Add sufficient oil of the recommended type to raise it to the H level mark on the dipstick See above for the checking pro cedure 50 ECS00461 CAUTION e When adding the
64. lide runners from overheating avoid sustained high speed us age in areas such as icy trails frozen lakes and rivers that have minimal snow coverage An overheated track will be weakened inter nally which may cause failure or damage Off trail riding Avoid off trail riding until there is sufficient snow coverage It generally takes several feet of snow to provide a good overall base to properly cover debris such as rocks logs etc If snow coverage is not sufficient stay on trails to avoid impact damage to the drive track Studded track In general track life will be shortened when studs are installed Drilling stud holes into the drive track will cut the internal fibers which weakens the track Avoid spinning the drive track Studs may catch on an object and pull out of the track leaving tears and damage around the already weakened area To mini mize possible damage consult your stud manufacturer for installation and stud pattern recommendations Yamaha does not recommend track stud ding ESU11390 Driving EWS00300 Be sure to read the SAFETY INFORMA TION section on page 1 and the Riding your snowmobile section on page 29 carefully before operating the snowmo bile NOTE 2 Make sure that the engine is warmed up enough before riding Operation EWS00310 e Make sure that the throttle lever is fully released and the snowmobile is at a full stop before shifting e Be sure to slide the shift lev
65. n ice or hard packed snow will rapidly wear the slide runners ESU12190 Lubrication Lubricate the following points with the speci fied grease EWS00510 e Apply a dab of grease onto the cable end only Do not grease the throttle cable be cause it could become frozen which could cause loss of control e Be sure to have a Yamaha dealer lubri cate the front and rear suspensions Lubricant Low temperature grease 1 Throttle cable end Periodic maintenance 1 Lubrication point 1 Screw ESU12220 2 Headlight access panel Replacing a headlight bulb 3 Disconnect the headlight coupler EWS00530 4 Remove the bulb holder cover WARNING eer Keep flammable products and your hands away from the hot bulb until it has cooled down 1 Remove the top cover See page 40 for removal procedures 2 Remove the screws and then remove the headlight access panel 1 Headlight coupler 2 Bulb holder cover 5 Unhook the bulb holder by pushing it in then clockwise 63 Periodic maintenance 1 Bulb holder 6 Remove the bulb 7 Install the new bulb and then hook the bulb holder onto the headlight unit Bulb type Halogen bulb ECS00620 CAUTION Keep oil and your hands away from the glass part of the bulb or its life and illumi nation will be affected If the glass is oil stained thoroughly clean it with a cloth moistened with alcohol or lacquer thinner 1 Do not touch the
66. ng the brake lever in di rection a finger tighten the adjusting bolt to set the brake lever to the desired position 17 Control functions fhe 1 Locknut 2 Adjusting bolt 3 Tighten the locknut securely after adjust ing the brake lever ESU10580 Parking brake lever When parking the snowmobile or starting the engine apply the parking brake by moving the parking brake lever to the left 1 Parking brake lever To release the parking brake move the park ing brake lever to the right 18 EWS00060 e Always set the parking brake before at tempting to start the engine e Never run the snowmobile with the park ing brake applied This may overheat the brake disc and reduce braking ability ESU10590 Shift lever The shift lever is used to put the snowmobile into forward or reverse After coming to a complete stop pull the shift lever out slide it to FWD or to REV until it stops and then release it 1 1 Shift lever 1 Pull out 2 Slide to FWD forward 3 Release Control functions 1 Pull out 1 Shroud 2 Slide to REV reverse 2 Right side cover 3 Release Stee eee ECS00070 CAUTION 1 LZ Pa Do not shift from FWD to REV or from ae REV to FWD while the snowmobile is LT nae moving Otherwise the drive system CZ SZ could be damaged Rear suspension damping ME OF force remote adjustment dial Turn
67. nnected properly e If the self diagnosis warning indicator warning light and an error code flash af ter the engine has been restarted note the error code and then have a Yamaha dealer inspect the snowmobile as soon as possible ESU10530 Engine stop switch g The engine stop switch is used to stop the en gine in an emergency Simply push the stop switch to stop the engine To start the engine pull the stop switch and proceed with starting the engine See pages 28 for engine starting procedures 15 Control functions 1 Engine stop switch During the first few rides practice using the stop switch so that you can react quickly in an emergency ESU10661 Headlight beam switch LIGHTS Push the headlight beam switch to change the headlight to high beam HI or to low beam LO 1 Headlight beam switch LIGHTS 2 High beam HI 3 Low beam LO ESU12650 Grip thumb warmer adjustment switch The grip warmer adjustment switch and the thumb warmer adjustment switch control the electrically heated handlebar grips and throt tle lever respectively 16 1 Thumb warmer adjustment switch To raise the temperature press the respec tive switch to HI To lower the temperature press the switch to LO ESU10690 Auxiliary DC jack RS90GT RS90GTA RS90LTGT The auxiliary DC jack is located in the front panel and can be used for accessories NOTE
68. number is stamped in the location as shown 1 Key identification number ESU12500 Consumer information YAMAHA MOTOR CORPORATION U S A SNOWMOBILE LIMIT ED WARRANTY Yamaha Motor Corporation U S A hereby warrants that new Yamaha snowmobiles purchased from an autho rized Yamaha snowmobile dealer in the continental United States will be free from defects in material and workman ship for the period of time stated herein subject to certain stated limitations WARRANTY PERIOD 1 All Yamaha snowmobiles shall be warranted for a term of one 1 year from the date of purchase plus a special early season extension if applicable 2 All Yamaha snowmobile clutch components are war ranted against abnormal wear for one 1 year from the date of purchase plus a special early season extension if applicable DURING THE PERIOD OF WARRANTY any au thorized Yamaha snowmobile dealer will free of charge repair or replace at Yamaha s option any part adjudged defective by Yamaha due to faulty workmanship or material from the factory Parts used in warranty repairs will be warranted for the balance of the snowmobile s warranty period All parts replaced under warranty be come the property of Yamaha Motor Corporation U S A GENERAL EXCLUSIONS from this warranty shall include any failures to the machine caused by 1 Competition racing or non Yamaha authorized rental use 2 Operation on surfaces other than snow or ice
69. on Please read all warning and caution labels on your snowmobile Also read the Snowmobil ers Safety Handbook that is supplied with your snowmobile Learning to ride your snowmobile Before you ride always perform the pre oper ation checks listed on page 26 The short time spent checking the condition of the snowmo bile will be rewarded with added safety anda more reliable snowmobile Always wear the proper clothing for both warmth and to help protect you from injury if an accident occurs Become familiar with operating your snowmo bile at low speeds even if you are an experi enced rider Do not attempt to operate at maximum performance until you are totally fa miliar with the snowmobile s handling and performance characteristics The beginning operator should select a large flat area to become familiar with the snowmo bile Make sure that this area is free of obsta cles and other traffic You should practice control of the throttle and brake and master turning techniques in this area before trying more difficult terrain Set the parking brake and follow the instruc tions on page 28 to start the engine Once the engine has warmed up you are ready to be gin riding your snowmobile To start out and accelerate 1 With the engine idling release the park ing brake 2 Apply the throttle slowly and smoothly The V belt clutch will engage and you will start to accelerate EWS00210 The operator should always keep both hand
70. ool kit spare parts or other small items 1 Storage compartment ESU10600 Fuel Make sure that there is sufficient fuel in the fuel tank EWS00070 e Fuel is HIGHLY FLAMMABLE and poi sonous Check the SAFETY INFORMA TION section carefully before refueling See page 1 e Do not fill the fuel tank above the bottom of the filler tube Fuel could overflow if the snowmobile is tilted or if the ambient temperature rises causing the fuel to warm up and expand e Make sure that the fuel tank cap is closed securely after refueling Leaking fuel can catch fire 1 Filler tube 2 Fuel level Control functions Recommended fuel REGULAR UNLEADED GASOLINE ONLY Fuel tank capacity 36 2 L 9 64 US gal 8 03 Imp gal Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number R M 2 of 86 or higher or a research octane number of 91 or higher ECS00080 CAUTION e Oxygenated fuels gasohol containing a maximum 5 of ethanol can be used although richer jetting may be required to prevent engine damage Consult a Yamaha dealer Gasohol containing methanol is not recommended e Make sure that snow or ice does not en ter the fuel tank when refueling e Do not use alcohol deicers or water ab sorbing additives with oxygenated fuel e The fuel tank should be filled with straight gasoline as specified ESU10870 Suspension The suspension can be adjusted to sui
71. otal dis tance traveled a tripmeter which shows the distance trav eled since it was last set to zero e warning indicators which show self diag nosis coolant temperature fuel level and oil level warnings a fuel meter which shows the fuel remain ing in the fuel tank a grip thumb warmer level indicator which shows the grip warmer level or the thumb warmer level After the engine is started the tachometer makes one sweep and the low coolant tem perature indicator light the warning light and all segments of the meter display turn on and off once 11 Control functions 1 Tachometer 2 Low coolant temperature indicator light F 3 Warning light A 4 Meter display 5 Select reset button The grip warmer level is initially displayed for 5 seconds then the display switches to the fuel meter Odometer and tripmeter modes Pushing the select reset button switches the display between the odometer mode ODO and the tripmeter mode TRIP To reset the tripmeter push the select reset button for at least one second while the trip meter is displayed NOTE gt To switch the speedometer odometer and tripmeter displays between kilometers and miles select the odometer mode ODO and then push the select reset button for at least 10 seconds while the snowmobile is stopped ESU10410 High beam indicator light The high beam indicator light comes on when the high beams of the
72. ottle lever is released The T O R S is designed to override the igni tion and limit the engine speed to less than the clutch engagement speed if the carburetors fail to return to the idle position when the throt tle lever is released See page 74 for the clutch engagement speed Idling Mn position Throttle switch Closed Open Open sensor T O R S Run Run will oper ate Idling starting Throttle 1 Throttle position sensor throttle valve closed position 2 Throttle cable 3 Throttle switch off Running 1 Throttle position sensor throttle valve open position 2 Throttle switch on Trouble 1 Throttle position sensor throttle valve open position 2 Throttle switch off NOTE 2 e When the T O R S is activated the warn ing light and self diagnosis warning indica tor will flash and the two digit code 84 will flash in the tripmeter odometer display e The T O R S monitors the condition of the throttle position sensor speedometer as sembly and speed sensor and will operate if any of the monitored items is disconnect ed or is malfunctioning Control functions NT 2 it AN 1 Warning light A 2 Self diagnosis warning indicator lt 4 3 Two digit code 84 ESU10351 Speedometer unit The speedometer unit is equipped with the following e a digital soeedometer which shows the riding speed an odometer which shows the t
73. phill side 31 Operation Ice or icy surface Operating on ice or icy surfaces can be very dangerous Traction for turning stopping and starting is much less than that on snow EWS00270 When you have to operate on ice or icy surfaces drive slowly and cautiously Avoid accelerating turning and braking rapidly Steering is minimal and uncon trolled spins are an ever present danger Hard packed snow It can be more difficult to negotiate on hard packed snow as both the skis and drive track do not have as much traction as when the snowmobile is operated on fresh snow Avoid rapid acceleration turning and braking Operation on surfaces other than snow or ice Operation of your snowmobile on surfaces other than snow or ice should be avoided Op eration under such conditions will damage or result in rapid wear of the ski runners drive track slide runners and drive sprockets Op eration of the snowmobile on the following surfaces should be avoided at all times e Dirt e Sand e Rocks e Grass e Bare pavement Other surfaces that should be avoided for the sake of drive track and slide runner life are e Glare ice surfaces e Snow mixed with a lot of dirt and sand All of the above surfaces have one thing in common in regard to drive track and slide run ners little or no lubricating ability Drive track and all slide rail systems require lubrication snow or water between the slide runners and the slide metal In
74. rchaser and each subsequent purchaser of each 2006 and later model Yamaha snowmobile cov ered by this warranty that the vehicle is designed built and equipped so as to conform at the time of sale with all U S emissions standards applicable at the time of manufacture and that it is free from defects in materials and workmanship which would cause it not to meet these standards within the period listed immediately below Failures other than those resulting from defects in material or workmanship which arise solely as a result of owner abuse and or lack of proper mainte nance are not covered by this warranty All Models Thirty 30 months from the original purchase date 17 Consumer information YAMAHA MOTOR CORPORATION U S A MAKES NO OTHER WARRANTY OF ANY KIND EXPRESSED OR IMPLIED ALL IMPLIED WAR RANTIES OF MERCHANTABILITY AND FIT NESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIM ITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA MOTOR CORPO RATION U S A AND EXCLUDED FROM THIS WARRANTY SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOSS OF USE SOME STATES DO NOT AL LOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAM AGES SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LE GAL RI
75. rds E Empty as the fuel level de creases When only one segment is left near E the fuel level warning indicator and the warning light come on N 1 Warning light A 2 Fuel level warning indicator PR Control functions If the fuel level warning indicator and the warning light come on refuel as soon as pos sible NOTE The snowmobile must be stopped on a level surface to obtain an accurate fuel meter read ing since the reading changes according to the movement and inclination of the snowmo bile Grip thumb warmer level indicator When the grip warmer adjustment switch is pressed the grip warmer indicator comes on and the display switches to the grip warmer level When the thumb warmer adjustment switch is pressed the thumb warmer indicator comes on and the display switches to the thumb warmer level J MPH aay PO Fil mt fim ORE EDLO 9 Grip warmer indicator g8 2 Thumb warmer indicator S ae 1 Grip warmer adjustment switch 13 Control functions 1 Thumb warmer adjustment switch NOTE _ _ gt e The grip thumb warmer level is displayed for 5 seconds after releasing the grip thumb warmer adjustment switch then the display switches to the fuel meter e The top segment of the grip thumb warmer level indicator flashes once when the grip thumb warmer adjustment reaches the maximum level The bottom segment of the grip thumb warmer le
76. reservoir cap and add coolant until it reaches the COLD LEVEL mark 51 Periodic maintenance Recommended antifreeze High quality ethylene glycol antifreeze containing corrosion inhibitors Antifreeze and water mixing ratio 3 2 Total amount RS90GT 4 80 L 5 07 US ai 4 22 Imp qt RS90G TA 4 80 L 5 07 US qt 4 22 Imp qt RS9OLT 5 60 L 5 92 US qt 4 93 Imp qt RS9OLTGT 5 60 L 5 92 US ai 4 93 Imp qt RS90R 4 80 L 5 07 US qt 4 22 Imp qt 3 Start the engine and add coolant until the coolant level stabilizes and then stop the engine 4 Fill the coolant reservoir with coolant until it reaches the COLD LEVEL mark 5 Install the coolant reservoir cap 6 Check for any coolant leakage NOTE If you find any leaks consult a Yamaha deal er 7 Install the top cover the right side cover and the shroud 52 ESU12060 V belt EWS00400 e Make sure that the drive guard is tight ened securely before operating the snowmobile e Never run the engine with the V belt or drive guard removed The V belt should be checked before each ride To check the V belt 1 Remove the shroud and the left side cov er and then remove the drive guard See page 40 for removal procedures 2 Check the V belt for wear and damage Replace if necessary 1 V belt wear limit New V belt width 34 1 mm 1 34 in V belt wear limit width 32 5 mm 1 28 in 3 Install the drive guard
77. rt de arri re Check the adjuster length using the i scale on the special wrench included SAL Aaa 1 2 3 4 5 6 7 re in the owner s tool kit as shown Make sure that the rim of the control Preload Soft Hard Min STO Max do pody is within the range of the Contr ler la longueur du dispositif de r glage l aide de l chelle figurant sur la cl sp ciale fournie dans la trousse de r paration Bien veiller ce que le bord de la tige de r glage soit dans la plage de chelle Position du dispositif de r glage nN ow a a N Pr contrainte Souple Dure 8FU 2818B 00 8FU 2818B 00 ESU10260 RS90R RS90GT RS90GTA 1 2 3 4 5 RS9OLT RS9OLTGT 1 2 3 4 5 Battery Main fuse Air filter Oil filler cap Throttle stop screw Fuse box Coolant reservoir Tool kit Storage compartment 10 Tail brake lights 11 Slide rail suspension 12 Rear suspension damping force remote ad justment dial 13 Drive track OANDOAR WD Description 89 10 A SL 12 11 89 10 14 V belt holder Description 1 Brake lever 14 High beam indicator light 2 Parking brake lever 15 Warning light 3 Grip warmer adjustment switch 16 Self diagnosis warning indicator 4 Headlight beam switch 17 Coolant temperature warning indicator
78. s ap plied NOTE Make sure that the engine stop switch is in the on position The starter motor cannot be oper ated when the engine stop switch is in the off position 1 Fully open the starter choke lever NOTE _ _ __ _ _ ___4 The starter choke lever is not required when the engine is warm Put the starter choke le ver in the closed position 28 2 Turnthe main switch to the start position After the engine starts put the starter choke lever in the half open position Warm up the engine until it does not run roughly or begin to stall when the starter choke lever is returned to the closed po sition 1 Start ECS00330 CAUTION e Release the switch immediately after the engine starts e If the engine fails to start release the switch wait a few seconds then try again Each attempt should be as short as possible to preserve the battery Do not crank the engine more than 10 sec onds on any one attempt ESU11310 Break in There is never a more important period in the life of your engine than the period between 0 and 500 km 300 mi For this reason you should read the following material carefully Since the engine is brand new do not put an excessive load on it for the first 500 km 300 mi The various parts in the engine wear and polish themselves to the correct operating clearances During this period prolonged full throttle operation or any condition that
79. s discharged the engine can be started using a fully charged 12 volt battery and jumper cables Two connecting leads have been provided for jump starting the snowmobile Due to the rubber engine mount ing the snowmobile frame is not a suitable grounding point for jump starting the engine EWS00570 e Connect the jumper cables only to the connecting lead terminals Do not con nect them to the frame or any wire or other lead e When connecting the jumper cables do not contact the jumper cables or con necting lead terminals to each other or to the frame or any metal part of the snowmobile This can cause electrical system damage or A FIRE HAZARD e Be sure to pull the lead covers back over the terminals completely If the termi nals are exposed they could come into contact with the frame or a metal part of the snowmobile and this can cause elec trical system damage or A FIRE HAZ ARD ECS00650 CAUTION Use the connecting leads to jump start the snowmobile only Do not use the connect ing leads for any other purpose To start the engine using the booster battery 1 Apply the parking brake and turn the main switch to the off position Remove the shroud and the right side cover See page 40 for removal proce dures Remove the red connecting lead from the lead holder and move it away from the black connecting lead AS ECS00660 CAUTION Be sure to connect the red jumper ca ble to
80. s on the handlebar Never put your feet outside the running boards Avoid 29 Operation high speeds until you have become thor oughly familiar with your snowmobile and all of its controls Braking When slowing down or stopping release the throttle and apply the brake gently not sud denly EWS00220 e Many surfaces such as ice and hard packed snow require much longer stop ping distances Be alert plan ahead and begin decelerating early e Improper use of the brake can cause the drive track to lose traction reduce con trol and increase the possibility of an accident Turning For most snow surfaces body English is the key to turning As you approach a curve slow down and be gin to turn the handlebar in the desired direc tion AS you do so put your weight on the running board to the inside of the turn and lean your upper body into the turn This procedure should be practiced at low speeds many times in a large flat area with no obstacles Once you have learned this tech nique you should be able to perform it at high 30 er speeds or in tighter curves Lean more as the turn gets sharper or is made at higher speeds Improper riding techniques such as abrupt throttle changes excessive braking incorrect body movements or too much speed for the sharpness of the turn may cause the snow mobile to tip If your snowmobile begins to tip while turning lean more into the turn to regain balance
81. sk a Yamaha dealer to inspect e Worn or damaged V belt with flat spots Re place e Worn or damaged idler wheels or shafts Ask a Yamaha dealer to inspect e Worn or damaged drive track Ask a Yamaha dealer to inspect Troubleshooting 71 Storage ESU12410 Long term storage requires some preventive procedures to guard against deterioration Cleaning Thoroughly clean the snowmobile inside and out to remove the corrosive salts and acids that can accumulate Use Yamaha Mud Grease and Engine Cleaner or an equivalent product to loosen mud grease and grime Wash with mild soap then rinse and dry com pletely Lubrication Lubricate moving parts suspension linkage and pivot points Use the grease or lubricant specified in the MAINTENANCE section or Yamaha Lube Zall general purpose lubricant Proper lubrication fights corrosion while it re duces friction Fuel system Add Yamaha Fuel Stabilizer and Conditioner or an equivalent stabilizer to the fuel tank to help prevent fuel oxidation and gum and var nish deposits and to inhibit corrosion in the fuel system and carburetor In areas where oxygenated fuel gasohol is used completely drain the fuel system Consult a Yamaha dealer if further information is needed Engine Proper storage of the engine is essential to prevent costly rust and corrosion damage to internal engine components This is more im portant in areas where oxygenated fuel gas ohol is used
82. spension damping force remote adjustment dial To increase the rebound damping force turn the adjusting dial in direction a To decrease the rebound damping force turn the adjusting dial in direction b ae TN ATX 1 Rear suspension damping force remote ad justment dial 2 Standard position 24 Rebound damping setting Minimum soft 22 click s in direction a Maximum hard 0 click s in direction b With the adjustment dial in the stan dard position ESU11050 Adjusting the control rod The weight transfer can be adjusted by turn ing the control rod adjuster or adjusting nut 1 Loosen the locknut 2 Turn the control rod adjuster in direction a to increase weight transfer or direction b to decrease weight transfer 1 Locknut 2 Control rod adjuster EWS00180 Never adjust the control rod beyond the range of the scale on the special wrench 3 Check the control rod adjuster length us ing the scale on the special wrench in cluded in the owners tool kit as shown Make sure that the rim of the control rod body is within the range of the scale 1 Special wrench 2 Adjuster length 3 Rim 4 Scale range 4 Tighten the locknut while holding the con trol rod adjuster in place Locknut tightening torque 35 Nm 3 5 m kgf 25 ft lb ECS00320 CAUTION When using the special wrench make sure that it is situated at a right angle to the control ro
83. ssary 7 e Check condition e Replace if necessary e Check fuel hose for cracks or damage e Replace if necessary ies Idle speed e Check and adjust idle speed O 36 Periodic maintenance Seasonally ITEM or 4000 km 2500 mi 200 hr Adjust synchronization Carburetors Whenever operating e Adjust the jets condition elevation tem perature is changed e Check for leakage Exhaust system e Tighten or replace gasket if necessary It is recommended that these items be serviced by a Yamaha dealer 37 Periodic maintenance ESU11560 General maintenance and lubrication chart INITIAL EVERY Seasonally ITEM or 800 km 500 mi 40 hr Eeo Site e Change warm engine before oe 47 draining 7 i Every Engine oil filter car Replace 20000 km 12000 mi e Check coolant level Cooling system e Air bleed the cooling system if 50 necessary Check engagement and shit speed Whenever operating ele e Adjust if necessary vation is changed e Inspect sheaves for wear and i damage Primary and sec e Inspect weights rollers and ondary clutches bushings for wear for primary e Inspect ramp shoes bushings for wear for secondary e Replace if necessary e Lubricate with specified grease e Check chain slack Initial at 500 km 300 mi Drive chain e Adiust if necesan and every 800 km 500 y mi thereafter e Check oil level Drive chain oil e Adjust
84. t rider preference A softer setting for example may provide greater rider comfort while a harder setting may allow more precise handling and control over certain types of terrain or riding conditions EWS00150 Be sure to have a Yamaha dealer make this adjustment This shock absorber contains highly pres surized nitrogen gas It could explode by improper handling causing injury or property damage e Do not tamper with or attempt to open the shock absorber 21 Control functions e Do not subject the shock absorber to an open flame or other high heat source which could cause it to explode e Do not deform or damage the shock ab sorber in any way e Do not dispose of a worn or damaged shock absorber by yourself Take the unit to a Yamaha dealer ESU10900 Adjusting the ski spring preload ECS00250 CAUTION The left and right ski spring preload must be set to the same setting Uneven set tings can cause poor handling and loss of stability The spring preload can be adjusted by turning the spring preload adjusting ring 1 Spring preload adjusting ring 2 Spring seat length 22 Spring preload setting spring seat length or spring preload adjusting ring position Minimum soft RS90R RS9OLT 161 0 mm 6 34 in RS90GT RS9OGTA RS90LTGT 119 0 mm 4 69 in Standard RS9OR RSYOLT 162 0 mm 6 38 in RS90GT RS90GTA RS9OLTGT 119 0 mm 4 69 in Maximum hard RS9OR RSYOLT 172 0 mm 6
85. the absence of lubrica 32 tion the slide runners will rapidly wear and in severe cases literally melt away and the drive track will be subject to damage or failure Also traction aids such as studs cleats etc may cause further track damage or failure EWS00280 Drive track damage or failure could result in loss of braking ability and snowmobile control which could cause an accident e Always check the drive track for damage or maladjustment before operating the snowmobile e Do not operate the snowmobile if you find damage to the drive track ECS00350 CAUTION Ride on fresh snow frequently Operating on ice or hard packed snow will rapidly wear the slide runners ESU11350 Maximizing drive track life Recommendations Track tension During initial break in the new drive track will tend to stretch quickly as the track settles Be sure to correct the track tension and align ment frequently See page 59 for adjustment procedures A loose track can slip ratchet derail or catch on suspension parts causing severe damage Do not overtighten the drive track otherwise it may increase the friction between the track and the slide runners re sulting in the rapid wear of both components Also this may put an excessive load on the suspension components resulting in compo nent failure Marginal snow The drive track and the slide runners are lubri cated and cooled by snow and water To pre vent the drive track and s
86. the following for your safety Severe injury or death may result if you ignore any of the following Before operating 1 Read the Owner s Manual and all labels before operating this snowmobile Be come familiar with all of the operating controls and their function Consult a Yamaha dealer about any control or func tion you do not understand This snowmobile was not manufactured for use on public streets roads or high ways Such use is prohibited by law and you could collide with another vehicle This snowmobile is designed to carry the OPERATOR ONLY Passengers are prohibited Carrying a passenger can cause loss of control 4 Do not operate the snowmobile after drinking alcohol or taking drugs Your ability to operate the snowmobile is re duced by the influence of alcohol or drugs For safety and proper care of the snow mobile always perform the pre operation checks on page 26 before starting the en gine Check the throttle brake and steer ing for proper operation every time before starting the engine Make sure that the throttle lever moves freely and it returns to the home position when it is released Apply the parking brake before starting the engine Never drive the snowmobile with the parking brake applied This may overheat the brake disc and reduce brak ing ability Do not allow anyone to stand behind the snowmobile when starting inspecting or adjusting the snowmobile A broken track tr
87. the red connecting lead and the black jumper cable to the black con necting lead Do not reverse the connec tions 4 Pull the red connecting lead cover to expose the terminal through the slit in the cover and then connect the red jump er cable to the red connecting lead Troubleshooting Connect the other end of the red jumper cable to the positive terminal of the booster battery Connect the black jumper cable to the negative terminal of the booster bat tery Pull the black connecting lead cover to expose the terminal through the slit in the cover and then connect the black jumper cable to the black connecting lead 69 Troubleshooting 8 Start the engine 9 Disconnect the black jumper cable from the black connecting lead and then pull the cover completely over the lead terminal 10 Disconnect the black jumper cable from the negative terminal of the bat tery used to jump start the engine 11 Disconnect the red jumper cable from the positive terminal of the battery used to jump start the engine 12 Disconnect the red jumper cable from the red connecting lead and then pull the cover completely over the lead termi nal 13 Install the red connecting lead into the lead holder 14 Install the right side cover and the shroud NOTE 2 Make sure that both the red connecting lead and the bla
88. the remote adjustment dial to adjust the rear suspension damping force See page 24 for adjustment procedures 1 Left side cover 1 Top cover LO De ew EWS00090 1 Rear suspension damping force remote ad A WARNING justment dial e Do not drive the snowmobile with the ESU10720 shroud or covers unfastened or re Shroud and covers moved Securely fasten the shroud and covers before operating the snowmobile See page 40 for removal and installation procedures 19 Control functions e Keep your body and clothing away from rotating parts when servicing the snow mobile with the shroud or covers re moved e Do not touch the hot muffler and engine during or immediately after operation ECS00370 CAUTION Make sure that all cables leads etc are routed properly before installing the shroud and covers ESU10750 Drive guard The drive guard is designed to cover the V belt clutch and V belt in case parts break or come loose 1 Drive guard EWS00400 e Make sure that the drive guard is tight ened securely before operating the snowmobile e Never run the engine with the V belt or drive guard removed a V belt holders Keep a spare V belt for emergency use by placing it into the V belt holders provided 1 V belt holder ECS00180 CAUTION Make sure that the V belt is installed se curely in the holders ESU10810 Storage compartment Open the storage compartment to store the t
89. tion 1 Warming up 2 When starting a cold engine 3 When the engine is warm ESU10310 Throttle lever Once the engine is running cleanly squeez ing the throttle lever will increase the engine speed and cause engagement of the drive system Regulate the speed of the snowmo bile by varying the throttle position Because the throttle is spring loaded the snowmobile will decelerate and the engine will return to idle when it is released Control functions 1 Throttle lever EWS00030 Check the throttle brake and steering for proper operation before starting the en gine See page 26 ESU10321 Engine overheating prevention system This model is equipped with a system which prevents overheating when the engine is idling When the engine has been idling for 3 min utes or longer and the coolant temperature has risen above 100 C 212 F the engine automatically stops to prevent overheating NOTE The engine can be started after it stops ESU10331 Throttle override system T O R S e If the T O R S is activated make sure that the cause of the malfunction has been corrected and that the engine can be operated without a problem before restarting the engine e Be sure to use the specified spark plug and spark plug cap Otherwise the T O R S will not work properly 10 If the carburetors or throttle cable malfunc tions during operation the T O R S will oper ate when the thr
90. ur lt could bend or break under load supporter un poids II pourrait s incurver ou Anything placed here could block se briser sous la charge the view of the brake tail light Tout objet ou personne plac a cet endroit which could cause an accident pourrait bloquer la vue des feux d arr t arri re et ainsi causer un accident 8HA 77762 E0 Safety information NOTE The following suspension adjustment charts are included with the Owner s Manual SUSPENSION ADJUSTMENT CHART A ae A TABLEAU DES R GLAGES DE LA SUSPENSION 2o Adjustment dial S H turning direction Be sure to have a Yamaha dealer make these adjustments Damping force Softer Harder Ces r glages doivent tre effectu s par un concessionnaire Yamaha Sens de tournage de la molette de r glage S H Spring preload adjustments R glage de la pr contrainte de ressort Plus Plus souple dure Force d amortissement Front spring Ressort des skis Control rod adjustment R glage des tiges de r glage Spring seat Increased Decreased length Adjuster turning direction Preload Harder Softer Weight transfer Increased Decreased Loge sg lacoue R duite u Sens de tournage de Pr contrainte Pus a spi dispositif de r glage Transfert de poids Accru R duit Rear spring Resso
91. urn the adjusting knob in direction a To de crease the rebound damping force turn the adjusting knob in direction b 1 Rebound damping force adjusting knob NOTE z The damping forces will not decrease past the minimum levels even if the adjusting knobs are turned out more than the minimum set tings ESU10980 Adjusting the rear suspension spring preload The rear suspension spring preload can be adjusted by turning the spring preload adjust ing ring on the shock absorber ae rlr Ee Te 1 Spring preload adjusting ring Spring preload setting spring seat length or spring preload adjusting ring position Minimum soft 1 Standard 4 Maximum hard 7 The spring seat length changes ap proximately 1 5 mm 0 06 in with each full turn of the adjusting ring 23 Control functions NOTE gt The rear suspension spring preload can be further adjusted by changing the position of the spring seat Have a Yamaha dealer make this adjustment as it requires special tools ESU10991 Adjusting the rear suspension damp ing force EWS00160 Do not turn the remote adjustment dial while the snowmobile is moving as this could cause loss of control an accident and injury ECS00290 CAUTION Be sure to stop the remote adjustment dial at a marked position around the dial where there is a click The rebound damping force can be adjusted by turning the rear su
92. us of your new address by sending a postcard listing your snowmobile model name engine serial number dealer number or dealer s name as it is shown on your warranty registration identification your name and new mailing address Mail to YAMAHA MOTOR CORPORATION U S A WARRANTY DEPARTMENT P O Box 6555 Cypress California 90630 This will ensure that Yamaha Motor Corporation U S A has an up to date registration record in accordance with federal law 79 Consumer information ESU12510 YAMAHA EXTENDED SERVICE Y E S Keep your Yamaha protected even after your warranty expires with genuine Yamaha Extended Service Y E S e Y E S is designed and administered by Yamaha Motor Corporation to provide maxi mum owner satisfaction You get uninter rupted factory backed coverage for extra peace of mind e Y E S is flexible You choose the plan that s right for you 12 months 24 months 36 months or every 48 months on selected models beyond your warranty period e Y E S is designed and administered by the same Yamaha people who handle your war ranty and it shows in the comprehensive coverage benefits There are no mileage limi tations and Y E S covers manufacturing defects just like the warranty See the sample contract at your Yamaha dealer to see how comforting uninterrupted factory backed pro tection can be e You don t have to pay anything for covered repairs There s no deductible to pay and r
93. vel indicator flashes once when the grip thumb warmer adjust ment reaches the minimum level e When the engine is started the grip thumb warmer levels are set to the levels selected when the engine is stopped ESU10450 Fuel level warning indicator py The fuel level warning indicator indicates a malfunctioning sensor disconnected coupler broken lead or short circuit when detected by the self diagnosis device of the snowmobile The fuel level warning indicator warning light and all segments of the fuel meter warn the rider of the above problems by flashing con tinuously When this occurs have a Yamaha dealer in spect the snowmobile as soon as possible 14 1 Fuel level warning indicator PQ 2 Warning light A 3 Fuel meter ESU10460 Oil level warning indicator lt The oil level warning indicator and the warn ing light come on when the engine oil level is low RD BERS i Q amp A 1 Oil level warning indicator 2 Warning light A If the oil level warning indicator and the warn ing light come on place the snowmobile on a level surface and allow it to idle for one minute If the oil level warning indicator and the warn ing light go off the engine oil level is sufficient however it is getting low Add engine oil as soon as possible If the oil level warning indicator and the warn ing light do not go off check the engine oil lev el in the oil tank se
94. ways clean the gasket surface Wipe off any grime from the threads and tighten the spark plug to the specified torque Spark plug tightening torque 12 5 Nm 1 25 m kgf 9 ft lb ECS00380 CAUTION Make sure that the spark plug caps are se curely installed Otherwise the spark plug caps could be damaged due to engine vi bration Adjusting the engine idling speed ECS00390 CAUTION e Be sure to have a Yamaha dealer make this adjustment e Make sure that the throttle lever moves smoothly e Make sure that the carburetor is syn chronized first 1 Remove the shroud See page 40 for re moval procedures 2 Start the engine and warm it up 3 Turn the throttle stop screw in or out to adjust the engine idling speed Periodic maintenance SY 7 Q KS ke i 1 Throttle stop screw Standard engine idling speed 1300 1500 r min 4 Install the shroud ESU12910 Adjusting the throttle cable free play ECS00410 CAUTION Be sure to adjust the engine idling speed first 1 Remove the shroud and the right side cover See page 40 for removal proce dures 2 Loosen the locknut 3 Turn the adjusting bolt in or out until the specified throttle cable free play is ob tained 1 Locknut 2 Throttle cable free play adjusting bolt 3 Throttle cable free play 43 Periodic maintenance Throttle cable free play 2 0 3 0 mm 0 08 0 12 in 4 Tighten the locknut 5 Install the right

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