2007-2011 IQ Service Manual Chapter 07
Contents
1. WEIGHT GRAMS 1gr PART NUMBER 10M R 44 1321530 10M W 46 1321527 10M B 47 5 1321529 10M 49 5 1321528 10 51 1321526 10A L 52 3 1321531 10 54 54 1321685 10A 55 1321589 10 56 56 1321684 10 58 58 1321588 10 60 60 1321587 10 62 62 1321586 10 62M 61 5 1321614 10 64 64 1321585 10 64M 63 5 1321615 10 66 66 1321584 10 68 68 1322427 10 70 70 1322414 10 72 72 1322428 10 74 74 1322429 10 76 76 1322585 10 78 78 1322586 Features smaller heel Belt to sheave clearance may have 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc to be adjusted MINATION PVT System 11 Series Weights PERC Team LWT Driven Helixes 24 Fin PART NUMBER DESCRIPTION 5135401 64 42 36 5135402 64 38 25 5135403 56 42 36 5135503 54 38 25 5135504 S36 5135772 66 44 46 5136327 60 42 36 5136255 42 Team Ramp Angles y 62 44 WEIGHT GRAMS 8gr PART NUMBER d 11 40 1322593 m BS 11 42 1322592 A 4 11 44 1322591 E 11 46 1322596 11 48 1322590 11 50 1322589 Beginning angie ma Measurement of transition 11 52 1322595 A a c va nore The angles and length of the transition between the first Wee da and final angle is stamped on the back of the helix The first 11 58 1322869 number A designates the starting angle of t2. TERRAIN DOMINATION gt POLARIS 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 3 Remove the snap ring Verify the washer is not lodged inside the snap ring groove CAUTION Driven spring under pressure Wear eye protection when removing snap ring and helix Unscrew the compressor to remove the helix spring cups and spring Note the orientation of the spring spacer spring cup and tabbed spring Disassemble the clutch sheaves Inspect the helix cup spacer spring bushings rollers and clutch sheaves for damage The cover and sheave bushings are not serviceable If bushings are severely worn or binding clutch assembly replacement is required Clean the sheaves with a Scotch Brite pad and a solution of warm soapy water Inspect the rollers for abnormal wear and replace as required Install new rollers with the ejector pin marks on the rollers facing center of sheave visible Install the sheave spacer and then the moveable sheave Next install the metal spring cup spring and then spring spacer Make sure the spring tab is in one of the spring cup holes and engaged in the moveable sheave hole Slide the helix down the stationary shaft 10 11 7 25 PVT System 12 Align the helix alignment hole with the X on the moveable sheave 13 Align the wide gap in the helix splines with the skip tooth in the stationary sheave shaft 14 V
3. Kevlar Cords ee MBL Kevlar Cords stony Performance replacement for the 3211122 above the 3211080 soui Cut Finish 26_ 11 5 29 2 46 77 118 8 circumfere PABLO nce of MBL High Performance Mountain Belt 3211115 driven PBO Fiber Cords clutch Sanded Finish sheaves 3211132 28_ 12 30 5 47 52 120 7 600 IQ Widetrak Belt Belt dimensions are given in nominal dimensions There is Belt Inspection a variance for all critical dimensions Clutch set up must be inspected when a new belt is installed Projected Belt Width The drive belt is an important component of the converter system In order to achieve maximum efficiency from the converter drive belt tension deflection clutch offset and alignment must be adjusted properly The belt cord line should be flush with or slightly above 1 Measure the belt width and replace it if it is worn the outer circumference of the driven clutch sheaves The severely Generally a belt should be replaced if the belt will seat itself in the driven clutch during the break in clutches can no longer be adjusted to provide the period Adjust the belt ride out after the break in period by proper belt deflection re adjusting belt deflection e Project the side profiles and measure from corner The break in period for a new drive belt is 30 miles During to corner this time vary the throttle position under 50 and limit full throttle use e Place a s
4. Main Puller Adapter 5020632 Item 8 Piston Pin Puller Tool PN 2870386 Moveable Sheave Bushing Insert Removal and Installation NOTE A torch may be required to release the bushing retaining compound 1 Disassemble the clutch and remove the moveable sheave from the stationary shaft 2 Install handle end of the piston pin puller securely into a bench vise 3 Install the main adapter Item 8 onto the puller 4 Working from inside of moveable sheave insert the moveable sheave removal tool Item 1 into the center of the sheave Slide sheave onto puller tool with towers facing upwards 5 Secure puller nut turn puller barrel to increase tension on the sheave if required 6 Turn sheave counterclockwise on puller rod until it comes free 7 Remove the sheave from the puller tool rod 8 Remove and discard the old bushing and insert 9 Toinstall a new bushing place the main adapter Item 8 onto the puller rod 10 Apply a thin film of Loctite 648 to the leading edge of the new bushing Push a new bushing into center of sheave by hand NOTE Verify no retaining compound is deposited on the 1 D of the bushing 7 20 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 11 Insert installation tool Item 1 into center of sheave and with the towers pointing toward the vise down slide the sheave onto the puller rod 12 Secure rod nut turn barrel to apply additional tension
5. against sheave if required 13 Turn the sheave counterclockwise until bushing is fully seated 14 Remove the rod nut and installation tool and repeat steps 11 to 13 and install the new insert Cover Bushing NOTE A torch may be required to release the bushing retaining compound 1 On covers utilizing a retaining ring remove the ring using a pick or scribe 2 Install the main adapter Item 8 onto the puller tool 3 From outside of the cover insert the removal tool Item 3 into the cover bushing 4 With the inside of the cover facing the vise slide the cover onto the puller 5 Secure the rod nut Turn the puller barrel to apply tension if required 6 Turn the clutch cover counterclockwise until the bushing is removed and the cover comes free Remove the tools and discard the bushing 8 To install a new cover bushing apply Loctite 648 to the leading edge of the new bushing Insert the new bushing and bushing installation tool Item 3 from the inside of the cover N NOTE Verify no retaining compound is deposited on the I D of the bushing 9 With the main adapter Item 8 installed on the puller insert the cover onto the puller rod with the outside of the cover facing the vise 10 Secure the rod nut and tighten the puller barrel to apply more tension if required 11 Turn the clutch cover counterclockwise on the puller rod until the bushing is fully seated Remove the tools from the rod and remove cov
6. clutch weights and determines the neutral RPM engagement RPM and wether the engine RPM remains flat rises or falls during shift out When changing only the drive spring installing a spring with a lower pre load rate will result in a lower engagement RPM speed while installing a spring with a higher pre load rate will result in a higher engagement RPM Clutch Weight The clutch weights generate centrifugal force as the drive clutch rotates The force generated changes in relation to the engine RPM and with specified weight of each clutch weight When changing only the clutch weights a lighter weight will result in a higher engagement RPM lower shifting force and higher shift out RPM Installing heavier weights has the opposite effect Neutral Speed Engine RPM when the force generated by the clutch weights is less than the pre load force generated by the drive spring In this mode the drive clutch is disengaged 7 2 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc Engagement RPM Engine RPM when the force generated by the clutch weights overcomes the drive spring pre load force and the moveable sheave begins to close or pinch the drive belt The engagement mode continues until no more belt slippage occurs in the drive clutch Once 100 belt engagementis achieved the sled will accelerate along the low ratio line until the drive clutch up shift force overcomes the opposing shift force generated by th
7. Lbs 393 420 Nm Apply Loctite 242 to Threads 10 Place the drive spring on the shaft 11 Place the cover onto the clutch and torque the cover fasteners to specification E T Cover Fastener Torque 100 In Lbs 11 Nm Use cross pattern NOTE Do not allow side loading or mis alignment of the cover or the bushing may become damaged 7 21 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc PVT System Spider Indexing NOTE Spider indexing effects belt to sheave clearance and clutch balance Please read all procedures before proceeding 1 Remove and disassemble clutch Add or remove spider washers as required to achieve desired belt to sheave clearance Make sure that the stepped washer A is on the bottom of the spacer stack B For example If belt to sheave clearance is 020 too large removing one 020 shim will position the movable sheave closer to the fixed sheave reducing belt to sheave clearance by 020 NOTE Install the clutch spacer stepped washer with the lip facing the spider 3 Place the correct number of spacer washers B between the spider and clutch spacer A The following washers are available for fine tuning 5210752 020 51mm 5242981 025 63mm e 5210753 032 81mm 5210754 050 1 27mm SPIDER A AO A 4 Install spider washer s and spider aligning the X with the moveable sheav
8. by 1 Inastraight line mark etch the sheaves and the cover rocking the weight back and forth with a black marker or a scribe 16 Inspect all the rollers bushings and roller pins by 2 Place the drive clutch in the clutch compression tool pulling a flat metal rod across the roller PN 8700220 17 Roller can also be inspected by rolling with a finger to 3 Compress the clutch in the compression tool then feel for flat spots roughness or loose bushing secure the chain RRP 4 Evenly remove the cover fasteners The cover NOTE The flyweight bushing is not replaceable If bushing may be damaged if the cover is side loaded flyweight bushing is damaged both the flyweight pin or mis aligned and nut will need to be replaced 5 Carefully remove the tension from the compression tool 18 Inspect to see if the roller and bushing are separating 6 Remove the cover and inspect the cover bushing 19 Bushing must fit tightly in roller Replace if damaged or worn 20 Replace roller and pin if roller fails to roll smoothly no flat spots or if the bushing is loose or worn NOTE Replace the cover bushing if the inside diameter is over 1 40 28 95mm 7 Remove the spring TERRAIN DOMINATION 9922854 2007 2011 IQ Service Manual gt POLARIS 2010 Polaris Sales Inc 7 18 PVT System Roller Removal BUTTON iy ROLLER PIN SPIDER AY 4 A IX lez y f pen GRS e ke om WASHER y Y gt y 3 n SH
9. machine at or about engagement RPM When possible do not go in deep snow when towing another machine Use fast effective throttle to engage the clutch Not all machines are intended for pulling heavy loads or other machines Spinning track while vehicle is stuck high RPM low vehicle speed high ambient temp Example 8000 RPM 10mph actual vehicle speed and 60 m p h indicated on speedometer Lower the gear ratio Remove windage plates from driven clutch If possible move to better snow conditions and reduce RPM Avoid riding in very high ambient temperatures Ice and snow piled up between track and tunnel overnight or after stopping for a long period of time enough to re freeze the snow Break loose snow and ice under tunnel Allow longer than normal warm up Allow belt to warm sufficiently and increase grip ability on clutch sheaves Use fast effective throttle when engaging clutch Poor running engine Bog Miss Backfire etc Maintain good state of tune including throttle and choke synchronization Check for fouled spark plug s Check for foreign material in carburetors Make sure no water or ice is present in the fuel tank lines or carburetors Loading machine on trailer Use caution when loading machine Carbide skags may gouge into trailer and prevent drive train from spinning freely Use enough speed to drive completely onto trailer If machine cannot be driven completely onto trailer it may need
10. the threaded holes and the sheaves in the open position install the drive belt NOTE Install belt so that the numbers can be read correctly on the left side of the machine or in the direction in which the belt was originally installed 2 Remove the wrench Wiggle the belt to remove slack while removing the wrench 3 Close the clutch guard Adjusting Belt Deflection SPA P2 1 Loosen the deflection screw jam nut Using a 1 8 Allen driver turn the deflection screw in or out to adjust the distance between the driven clutch sheaves 3 When the proper belt deflection is achieved torque the lock nut to 110 in lbs 12 Nm _ JAM NUT DEFLECTION SCREW TERRAIN DOMINATION gt POLARIS PVT System PVT SYSTEM ADJUSTMENTS Clutch Alignment Offset Driven Clutch Offset Shim Washers Offset Washers The drive and driven clutches are offest from each other 16 GA Bushing 7556509 This offset is controlled by the number and thickness of 023 7555917 washers installed on the jackshaft behind the driven 120 7555864 clutch Float Washers 063 7555734 1 Remove drive belt 047 7555957 2 Push the driven clutch towards the bulkhead Install the correct alignment tool depending on the type of driven clutch installed on the snowmobile A CAUTION TOOL PART NUMBER APPLICATION Always verify the driven clutch floats on the jackshaft f The jackshaft
11. 18 Black White 218 3 52 140 320 137 7041816 Almond Black 200 3 75 165 310 111 7041922 Almond Blue 218 3 75 150 310 122 7041988 Almond Red 207 4 27 165 310 110 7042083 Black Green 218 3 38 120 340 168 7043601 Black 3601 225 3 327 120 310 145 7043342 Black 3342 218 3 46 140 330 145 7043076 Black 3076 225 2 67 40 340 229 7043120 Black 3120 225 2 78 60 340 213 7043077 Black 3077 255 2 90 80 340 198 7043121 Black 3121 255 3 05 100 340 183 7042287 Black 2287 207 3 40 110 290 137 NOTE Springs listed as color will have the last four digits of the part number painted on the spring coil Tag each spring with the part number and spring force when not in use asa 7 5 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc PVT System Spring Free Length Measure the drive and driven spring free length with the spring resting on a flat surface Replace spring if out of specification In addition to proper free length the spring coils should be parallel to one another when placed on a flat surface Distortion of the spring indicates stress fatigue Replacement is required CAUTION Never shim a drive clutch spring to increase its compression rate This may result in complete stacking of the coils and subsequent clutch cover failure 7 6 Drive Clutch Weights 10 Series Weights
12. 22854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc Spider Button Installation 1 A shim kit is available which contains an assortment of shims Drive Clutch Shim Kit PN 2200387 2 Measure the width of the moveable sheave towers and record Specification is 1 50 001 38 1mm 3 Measure the width of each corresponding spider leg with the buttons installed and record Specification is 1 496 001 37 99mm 4 Subtract the spider measurement form the tower measurement The clearance between the spider buttons and the moveable sheave towers is 001 002 025 05mm 5 Add shims beneath each trailing side spider button to obtain the specified button to tower clearance when assembled at each spider leg ax E SS In mm Button To Tower Clearance 001 002 025 05mm 7 19 PVT System Bushing Insert Replacement The drive clutch moveable sheave and cover bushings insert are replaceable Bushing insert removal and installation can be aided using Bushing Removal and Installation Kit The kit uses the Piston Pin Puller tool Each of the adapters and or tools are marked with an item number The item number is referenced within the text for identification Clutch Bushing Removal Installation Kit PN 2871025 Individual Parts P 85 Bushing Insert Tool 5020627 Item 1 Cover Bushing Tool 5020629 Item 3
13. 520 init tbe ER Ria win wid keel ees 7 20 CLUTCH ASSEMBLY cocina a adie feos Wud and gtd dane Sadia eats 7 21 SPIDER INDEXING x stona doam as re ove a les Web da eae alae 7 22 DRIVE CLUTCH INSTALLATION ooococccoccco e eee eee 7 23 DRIVEN GUUTOA ls sp aaa aie yh acer Sia o KESA EERE o Mee da 7 23 TERRAIN DOMINATION E POLARIS 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 7 1 PVT System PVT SYSTEM Overview CAUTION Because of the critical nature and precision balance incorporated into the PVT system it is absolutely essential that no attempt at clutch disassembly and or repair be made without factory authorized special tools and service procedures Polaris recommends that only authorized service technicians that have attended a Polaris sponsored service training seminar and understand the proper procedures perform adjustments or repairs The Polaris drive system is a centrifugally actuated variable speed belt drive unit The drive clutch driven clutch and belt make up the torque converter system Each clutch comes from the factory with the proper internal components installed for its specific engine model Therefore modifications or variations of components at random are never recommended Proper clutch setup and adjustments of existing components must be the primary objective in clutch operation diagnosis Drive Spring The drive spring opposes the shift force generated by the
14. ATION gt POLARIS Adjusting Belt Deflection Team Driven Clutch Z S Z JAMNUT Sy DEFLECTION STUD Loosen the jam nut Using an 1 8 Allen head wrench turn the stud counter clockwise to decrease belt deflection and clockwise to increase belt deflection 3 When the proper belt deflection is achieved torque the lock nut to 90 110 in lb 10 12 Nm N NOTE The belt deflection should be set so that 09 to 10 of the outer cogs are outside of the driven sheaves 7 13 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc PVT System Drive Belt Removal SPA P2 THREADED HOLES NOTE Turn the key to the OFF position and allow the engine to come to a complete stop 1 Verify the driven clutch is not in reverse Remove the LH compartment door panel CAUTION Damage to the driven clutch or L wrench will occur when attempting to open the driven clutch when the driven clutch is in the reverse position 2 Insert the L wrench PN 2874857 into one of the threaded holes located on the driven clutch Turn it clockwise until the clutch sheaves are in the open position 3 Remove the drive belt 7 14 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc Drive Belt Installation SPA P2 1 With the L wrench inserted into one of
15. Brite pad and a solution of warm soapy water 6 Inspect spring spring cup spacer and rollers for wear and replace as required 7 Toassemble the clutch slide the components back on to the stationary sheave shaft TERRAIN DOMINATION 9922854 2007 2011 IQ Service Manual gt POLARIS 2010 Polaris Sales Inc 7 24 PVT System Polaris SPA P2 Driven Clutch Components SPACER DRIVEN COVER oc 06 2 Y BUSHING NO SERVICE RETAINING RING eg p ES HELIX WASHER SPRING W TAB N SPRING CUP w TAB HOLES a ROLLER STATIONARY SHEAVE MOVEABLE SHEAVE NO SERVICE ADJUSTER SCREW LOCK NUT T Driven Cover Screws 12 Ft Lbs 16Nm Deflection Adjuster Screw Lock Nut 10 Ft Lbs 12Nm Driven Clutch Retaining Fastener 17 Ft Lbs 23 Nm Roller Fasteners 110 In Lbs 12 5 Nm NOTE Single Point Adjuster SPA P2 driven clutches feature different components than what is used on early P2 equipped 2009 EDGE vehicles Disassembly and Assembly Process 1 Remove the driven cover screws and cover Note the X in the cover and moveable sheave are in alignment 2 Install the clutch into a screw down clutch compression fixture Screw down clutch compressors are commercially available through after market companies such as Team Industries Inc NOTE The 8700220 clutch compressor and PS 45909 extensions will not work on a P2 driven clutch
16. IM O Apa AN ss BUTTON ROLLER WASHER 1 With the spider in a vise start removing the spider buttons by drilling a 0 18 hole in the center of a button on one side of the spider 2 Place a pin punch through the drilled hole in the button and drive the opposing button and pin out 3 Remove shims if any are installed and note their location Flip the spider over and tap out the holed button Perform steps on remaining spider legs Oe NOTE When required button shims are installed on the trailing right side of the spider leg as viewed from the front of spider Roller Installation NOTE CAUTION Use care to start the pin straight Aluminum burrs could pass through into the roller bushing causing it to bind and stick Also use care to make sure the roller remains aligned when the pin is driven through The roller busing could be damaged causing premature wear and roller failure 1 Drive pin into the spider leg 100 125 0 25 0 32cm beyond the first land of the spider leg 2 Install one washer on the portion of the pin that is protruding from the spider leg Place roller in spider leg and center it on the pin Place a second washer on the other side of the roller Place the spider on a vise Install pin centering tool PN 2870401 Drive the roller pin through the second land of the spider 8 Repeat process for the other two rollers NOOR amp TERRAIN DOMINATION gt POLARIS 99
17. PVT System CHAPTER 7 PVT System PVT SYSTEM cau these a diia oped es 7 OVERVIEW o erae e o lee Pei overheat ANE 7 2 DRIVE SPRING 000 0000oitto re ra Glan ed ables o a t 7 2 GCLUTCH WEIGHT 0 cee di ed Apter A E Gavan ee eal Ben ans 7 2 NEUTRAL SPEED ocio di id ca eee eed Se eee Sie dy 7 2 ENGAGEMENT RPM cios dalla cats Saw he ae ead eats te he 7 2 SHIFT OUT OVER REV occ Sedo ia a a Eaa aed ai pact ai 7 2 SHIR TOUT RPM oc eek A She Geek eee a es ie ang 7 2 DRIVEN SPRING tai cotiauct asta Wenn ie ae whee bate eben 7 2 BAGK SHIPTING esc Seto ees oe ee ced Ba be ete dee batas 7 3 FINAL GEARING onneen hean aa eae aie e by o ee aye Be alae 7 3 TAC SHIFT RATIO cti e hen ted aan ear aa ete abetted 7 3 LOW HIGH RATIO 0 dia ado a omiie nee 7 3 DRIVEN HELIX RAMP 22 0563 iros ca o lis ee ee eee 7 3 PVT SYSTEM FASTENER TORQUES 0 000 000 c cece eee eee 7 3 GENERAL INFORMATION wesc dios ia 7 4 SPECIAL TOOLS caia A AA leia 7 4 DRIVE CLUTCH SPRINGS 0 002 eee ee 7 5 SPRING FREE LENGTH vc ii ca oe ok Woke e e lene 7 6 DRIVE CLUTCH WEIGHTS occ 7 6 PERC TEAM LWT DRIVEN HELIXES 24 FIN 2 0 0 0 0002000 eee 7 7 TEAM RAMP ANGLES 0 000000000 c eee 7 7 TEAM DRIVEN SPRINGS 0ooccococccc ee 7 8 POLARIS P2 DRIVEN HELIXES ici ccc bead els ee eta da epi aa 7 9 POLARIS P2 DRIVEN SPRINGS TEAM 2009 550CC P2 7 9 POLARIS P2 TAB DRIVEN SPRINGS 0 0 000 002 2ee ee
18. bearing will fail from side loading if the PS 46998 Standard Team Driven 12 Fin driven piers is not allowed to float PS 47477 Light Weight LWT Team Driven P2 NOTE The PS 49668 and PS 47477 offset tools are 0 060 calibrated with the correct alignment angle for their respective driven clutches Using the wrong offset tool will yield incorrect measurements Inspect for broken motor mounts engine straps or bulkhead damage if the offset tool reveals major mis alignment 3 The optimum setup is when the front and rear of the tool touch the driven clutch No gap should be present in the front and the rear clearance should not exceed 060 1 5mm NOTE Ifthe front of the alignment bar does not touch the driven sheave the maximum clearance cannot exceed 025 64mm Offset Float Adjustment 1 Determine direction driven clutch needs to be adjusted 2 Remove driven clutch retaining bolt and remove driven clutch 3 With one 16 GA bushing installed add or remove offset washers from behind the driven clutch to set the proper offset 4 After adjusting the offset add or remove shim washers from behind the driven clutch bolt and washer to provide a 060 1 5mm driven clutch float on the jackshaft PN PS 46998 Shown TERRAIN DOMINATION 9922854 2007 2011 IQ Service Manual lt gt POLARIS 2010 Polaris Sales Inc 7 15 PVT System Belt to Sheave Clea
19. ch float Remove belt during off season storage period Drive Clutch PREMATURE WEAR Verify correct clutch weight spring package is installed Inspect spider rollers bushings for damage and uneven wear Inspect sheave faces for premature wear De glaze faces with 1500 2000 grit sand paper OPERATING RPM DROP Replace drive clutch spring and retest Inspect spider rollers bushings Inspect adjust belt to sheave clearance Inspect moveable cover bushings SURGING BOGGING Inspect adjust clutch alignment and belt deflection Inspect drive clutch weights for wear Driven Clutch 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc PREMATURE WEAR Verify correct clutch helix spring is installed Inspect rollers bushings for damage and uneven wear Inspect sheave faces for premature wear De glaze faces with 1500 2000 grit sand paper Verify driven clutch floats on jackshaft OPERATING RPM DROP Replace spring and retest Inspect spider rollers oushings Inspect moveable cover bushings TERRAIN gt POLARIS DOMINATION
20. cluding 1999 440 XCR 2871855 Replacement Handle for ALL Clutch Pullers 5020326 Drive Clutch Holding Wrench 9314177 A Strap Wrench PU 45419 Replacement Strap 305085 Drive Clutch Spider Nut Socket 2870338 Drive Clutch Spider Removal Installation Tool 2870341 Clutch Pin Punch 2870507 Tapered Reamer 29mm Short Drive All Fuji Snow Engines Excluding 800 XCR 2870576 Tapered Reamer 29mm Long Drive 755 866 w original crankshaft 800XCR All Domestic PS 48587 Carbureted Excluding 600 IQ Racer Tapered Reamer 31mm All 600 700 800 CFI 755 866 w large taper crankshaft 600 IQ Racer PS 48584 Roller Pin Installation Roller Bushing Alignment Tool 2870910 A Drive Clutch Button Removal Tool 2870985 Clutch Bushing Replacement Tool Kit 2871025 Clutch Holding Fixture 2871358 1 Universal Drive Driven Clutch Compressor Screw Down Type PU 50518 Spring Loaded Roller Pin Installation Roller Bushing Alignment Tool 8700221 Drive Clutch Compression Tool Compresses drive clutch without removing clutch from engine 2871173 7 4 9922854 2007 2011 IQ Service Manual gt POLARIS 2010 Polaris Sales Inc PVT System Drive Clutch Springs PART NUMBER COLOR DIAMETER Face aoe t a a RATE bs inches 12 LBS inch 7041080 Blue 207 3 55 120 300 137 7041781 Dark Blue White Subs to 7043601 7041945 Almond 218 3 65 140 330 145 7041645 Almond Gold 207 4 00 150 290 107 70418
21. e driven clutch Shift Out Over Rev Engine RPM that spikes above the desired operating RPM speed The shift out RPM should come down to the desired operating RPM but never below after the driven clutch begins to open Shift Out RPM Engine RPM at which the up shift force generated by the drive clutch overcomes the shift force within the driven clutch In this mode the drive clutch will move the belt outwards and the driven clutch will allow the drive belt to be pulled down into the sheaves During WOT operation the shift out RPM can be seen as the maximum sustained RPM displayed on the tachometer The shift out RPM should be the same RPM as the recommended engine operating RPM If the shift out RPM is above the recommended engine operating RPM install heavier drive clutch weights If the shift out RPM is below the recommended engine operating RPM install lighter drive clutch weights The shift out RPM should remain constant during both the upshift and back shift modes Driven Spring A compression spring Team driven P2 or torsional spring Polaris P 85 driven clutch works in conjunction with the helix and controls the shift rate of the driven clutch The spring must provide enough side pressure to grip the belt and prevent slippage during initial acceleration A higher spring rate will provide more side pressure and quicker back shifting but decreases drive system efficiency If too much spring tension exists the dri
22. e eee eee 7 9 P2 HELIX ANGLES cerar iu n ehh Sede eet ee a ht 7 10 DRIVE BELTS wove wine astro hy eed een deel ented a cine erat 7 11 BELT INSPECTION seccion ici Bed ee edie eee cae ee ee ee oe 7 11 BELT WEAR BURN DIAGNOSTICS 0 000 000 2 eee eee eee 7 12 DRIVE BELT REMOVAL TEAM DRIVEN 2 0 00000 00s eee eee 7 13 DRIVE BELT INSTALLATION TEAM DRIVEN 0 2 20 0 0 7 13 ADJUSTING BELT DEFLECTION TEAM DRIVEN CLUTCH 7 13 DRIVE BELT REMOVAL SPAP2 000 0 e cee 7 14 DRIVE BELT INSTALLATION SPA P2 0 000000 c eee eee eee 7 14 ADJUSTING BELT DEFLECTION SPA P2 0 0000000000 0000 7 14 PVT SYSTEM ADIUSIMENTS 222 0 oy seed er pete ee eee as 7 15 CLUTCH ALIGNMENT OFFSET 0 0 000002 cece eee eee 7 15 OFFSET FLOAT ADJUSTMENT ooo 7 15 BELT TO SHEAVE CLEARANCE ADJUSTMENT 0 0 0 0 05 7 16 DRIV EG LUT GH cr Aone nce a A id chee pits wok 3s 7 17 IDENTIFICATION 2 ooze ni rs te Pe nae Se pe ec eae 7 17 DRIVE CLUTCH REMOVAL coco ticas e EAE ee ee a ed 7 17 DRIVE CLUTCH DISASSEMBLY LL 7 18 ROLLER REMOVAL 2cecc asd Seo ek Ne E ors re Re VE aye de Re ak 7 19 ROLLER INSTALLATION ooo 7 19 SPIDER BUTTON INSTALLATION 0 000 0000 c eee ee eee ee 7 19 BUSHING INSERT REPLACEMENT 000 0000 c eee eee eee 7 20 MOVEABLE SHEAVE BUSHING INSERT REMOVAL AND INSTALLATION 7 20 COVER BUSHING 2 2
23. e s X Notice as the spider seat location is changed the sheave marks made before disassembly no longer align C There are two ways to bring the sheave marks into alignment 7 22 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc Vary the amount and thickness of spacer washers washer thickness may vary slightly Re index marked spider leg to another tower This can be done because spider has little effect on overall clutch balance Re indexing the spider 1 3 turn clockwise or 1 leg will allow the realignment of the moveable and stationary sheaves as previously marked D For EXAMPLE 0 020 or 0 032 0 5 0 8mm washer removed re index spider clockwise 1 3 turn NOTE Alignment marks on the sheaves should be with in 1 25 4mm after final assembly and torquing When assembling a new clutch with all of the same components it is not uncommon for the marks not to line up TERRAIN DOMINATION gt POLARIS PVT System Drive Clutch Installation NOTE Always clean the clutch taper before re installing clutch on engine 1 Place the specified clutch taper reamer in a vise and lubricate the cutting edges with cutting oil Clean the clutch taper by manually rotating the clutch clockwise on the reamer one or two revolutions Only use the weight of the clutch and do not push down on the clutch while turning 2 Check crankshaft taper for galling or scoring If necessary clean the taper ev
24. e shaft e T Driven Clutch Bolt Torque 17 Ft Lbs 23 Nm 7 23 PVT System Team LWT Components a SCREWS DEFLECTION SPACER STATIONARY SHEEVE MOVEABLE SHEEVE BELT DEFLECTION SCREW 8 Align the notch in the roller assembly with row of S T double splines on the shaft Slowly compress the spring and roller assembly down on to the shaft Install Helix Fasteners 60 80 In Lbs 7 9 Nm the snap ring making sure it is fully seated in the Driven Clutch Retaining Fastener 17 Ft Lbs 23 Nm groove 9 Install the helix by aligning the rollers with the ramps Disassembly and Assembly Process Push the helix down into the sheave while keeping the screws holes aligned 1 Remove the screws from the helix then carefully pry 10 Install and torque helix fasteners to 60 80 in Ibs the helix out of the moveable sheave or gently tap 7 9 Nm shaft on a block of wood 2 Install the clutch in the clutch compressor fixture PN 8700220 Install the extensions PN PS 45909 A CAUTION Driven spring under pressure Wear eye protection when removing snap ring and helix 3 Wearing eye protection carefully compress the roller assembly to gain access to the snap ring Remove the snap ring 4 Slowly release the fixture arm to remove the roller assembly and spring Disassemble the clutch sheaves 5 Inspect the sheaves for abnormal wear Clean sheave faces with a Scotch
25. em Drive Clutch Disassembly WEIGHT ROLLER WEIGHT PIN WASHER ROLLER PIN SPIDER BUTTON SHIM BEARING SLEEVE MOVEABLE INSERT SPIDER COVER BEARING SPACERS Ss RETAINER MOVEABLE SHEAVE CLUTCH SPACER STATIONARY SHEAVE 8 Mount the drive clutch securely in a drive clutch holding fixture PN 2871358 9 Remove the jam nut in a counterclockwise direction A CAUTION standard thread using the drive clutch spider nut socket PN 2871358 l Wear eye protection when servicing the drive clutch 10 Install the spider removal tool PN 2870341 and Sheaves must be marked to provide a reference point remove the spider in a counterclockwise direction for dutch balance and spider indexing If the sheaves are standard thread not marked and the spider washers are changed or 11 Measure the total thickness of the spacer washers misplaced the clutch may be out of balance and that are installed on top of the clutch spacer Record damage to the clutch may result the thickness of these spacer washers 12 Inspect both sheave surfaces for wear or damage 13 Inspect the moveable sheave bushing for wear or A WARNING damage 14 Remove all three drive clutch weights Clutch spring is under extreme tension use caution and 15 Inspect each weight The surface should be smooth wear eye protection when disassembling the clutch with no waves or galling Place pin inside weight to check flyweight bushing and pin surface for wear
26. enly with 200 grit emery cloth 3 The clutch taper and the crankshaft taper should be clean and dry Do not use harsh cleaners which may cause clutch taper to corrode or damage the crank seal 4 Clean clutch taper with lacquer thinner or isopropyl alcohol 5 Slide clutch onto crankshaft taper 6 Install the retaining bolt with all spacers and washers or o rings that were on the bolt when it was removed 7 Hold the clutch with the holding wrench PN 931417 A Torque bolt to specification Run engine then re torque the retaining bolt to specification E 1 Drive Clutch Bolt Torque All Carbureted Engines 50 Ft Lbs 68 Nm All 2007 Current CFI Engines 80 Ft Lbs 108 Nm Re torque after running engine o 9 TERRAIN DOMINATION gt POLARIS 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc DRIVEN CLUTCH Driven Clutch Removal 1 Remove the drive belt 2 Apply and lock the parking brake 3 Remove the driven clutch bolt and washers A NOTE Count the number and location of the spacer washers located on the fastener and behind the clutch 4 Slide the driven clutch off the jackshaft 5 Inspect the splines and replace jackshaft if damage is found Driven Clutch Installation Ye 1 Install the driven clutch bolt with the same amount of washers at removal 2 Torque the bolt to specification 3 Check for correct belt deflection and the clutch floats on th
27. er 12 Squeeze the ends of the retaining ring and reinstall into the back of the cover TERRAIN DOMINATION gt POLARIS PVT System Clutch Assembly 1 Assemble the rollers bushings and roller pins if they were removed 2 Install the head of the weight pin so that it is on the leading side of rotation This will orientate the nut on the trailing side of rotation 3 Torque weight pin to 30 in lb 3Nm e T Weight Pin Torque 20 30 In Lbs 2 2 3 4 Nm 4 Place the moveable sheave onto the stationary sheave 5 Place the same number of spacers on top of the stepped spacer onto the shaft of the stationary sheave SPIDER Shy AON SPACER S Ay a JAM NUT AO Thread the spider onto the stationary sheave shaft Index the spider See Spider Indexing on page 7 22 8 Apply Loctite 242 to shaft threads Do not get Loctite on moveable bushing Using the spider tool PN 2870341 torque to specification e T Spider Torque Flat Clutch Cover 200 225 Ft Lbs 271 305Nm Raised Clutch Cover 280 300 Ft Lbs 380 407 Nm Apply Loctite 242 to Threads NO TERRAIN DOMINATION gt POLARIS 9 Apply Loctite 242 to shaft threads Do not get Loctite on moveable bushing Install the jam nut onto the shaft and torque it to specification E T Spider Jam Nut Torque Flat Clutch Cover 225 250 Ft Lbs 305 399 Nm Raised Clutch Cover 290 310 Ft
28. for deep snow mountain use may cause premature belt and clutch wear Typically it is recommended to gear the snowmobile with a slightly higher ratio than the actual top speed the snowmobile will ever achieve 1 1 Shift Ratio A 1 1 shift ratio occurs when the drive clutch and the driven clutch are rotating at the same RPM The mathematical vehicle speed for a given gear ratio at a 1 1 shift ratio is represented in the chaincase gearing charts located in the Final Drive Chapter Low High Ratio Low ratio is the mechanical position when the drive belt is all the way down into the drive clutch and all the way out on the driven clutch High ratio represents when the drive belt is all the way out on the drive clutch and all the way in on the driven clutch TERRAIN DOMINATION gt POLARIS Driven Helix Ramp The helix cam is the primary torque feedback component within the driven clutch regardless of driven clutch type The beginning angle of the helix must transmit enough torque feedback to the moveable sheave in order to pinch the drive belt while minimizing belt slip The flatter or lower the helix angle the more side force will be exerted on the moveable sheave while the steeper or higher the helix angle the less side force will be exerted on the moveable sheave PVT System Fastener Torques Fastener Torque Note Drive Clutch Bolt 50 Ft Lbs All Carbureted 68 Nm mba Re tor
29. he ramp The 11 60 1322863 second number B designates the finish angle The last 11 62 1322862 number C is the transition distance in inches between Aire 322604 the starting and finish angles 11 66 1322559 11 68 1322558 CAUTION 11 70 1322523 11 72 1322524 Do not install a non ER helix on a Perc equipped 11 74 1322525 snowmobile where the engine changes directions 11 76 1322526 NOTE When compared to 10 series weights 11 series weights feature more weight distribution at the begining of the shift curve a more aggressive shift curve and a larger heel angle The belt to sheave clearance will require adjustment when changing to and from each series of weights When cross referencing 10 and 11 series weights select a 2 gr lighter 11 series weight 10 66 11 64 gt POLARIS 9922854 2007 2011 IQ Service Manual 7 17 2010 Polaris Sales Inc PVT System Team Driven Springs TEAM Driven Springs MOMSER COLOR he am LOAD 2 2 Ibs LOAD 1 1 lbs Rate Lbs per inch 7042181 Black Yellow 6 0 15 24 145 208 56 7043058 Red Black 4 7 11 9 140 240 90 7043059 Red Green 4 767 12 1 120 220 90 7042066 Green Black 5 60 14 2 135 198 56 7043061 Red Silver 4 95 12 5 125 175 45 7043062 Red Yellow 4 40 11 2 100 150 45 7043057 Red Blue 4 767 12 1 140 200 54 7043063 Black Red 5 14 13 155 222 65 7043064 Bl
30. isually verify the rollers are positioned underneath each corresponding helix ramp 15 Compress the helix down into the sheave Install the washer and snap ring Verify the snap ring is fully seated in the groove with the sharp edge upward 16 Carefully release the clutch compressor 17 Align the two X marks and install the cover Torque fasteners to specification P2 Cover Fastener Torque 12 Ft Lbs 16 Nm PVT SYSTEM TROUBLESHOOTING Drive Belt 7 26 Verify specified drive belt is installed on vehicle Drive belts have different width angle and length measurements Reference Drive Belts section for specifications Installing a non specified drive belt often requires drive clutch spacer adjustments to achieve correct belt to sheave clearance Install drive belt so part number can be read from left side of vehcile Always install belt using the same orientation as it was before removal PREMATURE WEAR Ensure correct belt is installed Inspect belt to sheave clearance deflection and clutch alignment Adjust gearing for rider type Verify correct clutch weight spring package is installed Change riding habbits style OPERATING RPM DROP Drive belts used on snowmobiles operated at high speeds loads mountain use for extended periods of time should be inspected for glazzing at 1 000 mile intervals CORD POP OUT Inspect drive driven clutch alignment motor mounts and deflection Set driven clut
31. que after me UICN BO running engine All 2007 Current Ace Ni 3 CFI 17 Ft Lbs Driven Clutch Bolt 23 Nm Team Helix 60 80 In Lbs Fasteners 7 9Nm 12 Ft Lbs P2 Cover 16 Nm Team Deflection 110 In Lbs Jam Nut 12 Nm P2 Deflection 12 Ft Lbs Cam 16 Nm DO NOT P2 SPA OVER TORQUE Deflection 10 Ft Lbs Adjuster Screw 12Nm Lock Nut Spider Flat Clutch Cover 200 225 Ft Lbs 271 305 Nm Raised Clutch 280 300 Ft Lbs Cover 380 407 Nm Apply Loctite 242 Spider Jam Nut Flat Clutch Cover 225 250 Ft Lbs 305 339 Nm Raised Clutch 290 310 Ft Lbs Cover 393 420 Nm Drive Clutch 100 In Lbs Cover 11 Nm 150 180 In Lbs Apply Loctite 271 SNE mung dear 1 1 2 Nm Use cross pattern 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 7 3 PVT System GENERAL INFORMATION Special Tools Team 12 Cooling Fin Driven Clutch Offset Alignment Tool PS 46998 Team 24 Cooling Fin Driven Clutch P2 Offset Alignment Tool PS 47477 Drive Clutch Puller 3 4 16 x 7 16 Fuji 340 488 440 550 Fan and Liquid Engines 2872084 Drive Clutch Puller All engines through 1998 Excluding Domestic Twins Fuji 700 800 XCR 2870506 Drive Clutch Puller 3 4 16 x 14mm 2000 Current Domestic Twins 1999 2003 440 FS FST 2872085 1999 2003 700 800 XCR Drive Clutch Puller M14 x 1 5mm 1997 1999 Domestic Twins Ex
32. rance Adjustment Belt to sheave clearance is an important factor when evaluating drive clutch performance as it controls the starting drive ratio and the position of the drive clutch weights in relation to engine RPM If the clearance is too small the drive belt will drag on the face of the sheaves when the engine is at idle speed If the clearance is too large the belt will slip during initial engagement causing belt burning and low speed engine bogging y w In mm Belt to Sheave Clearance Nominal 020in 0 508mm Range 005 035in 0 127 0 89mm Belt to sheave clearance can adjusted by installing a different drive belt or by adding or removing shims washers located under the spider assembly To measure belt to sheave clearance follow these steps 1 Verify the drive clutch sheave faces are clean and the drive belt is in good condition and not damaged or excessively worn 2 Push the drive belt tight against one side of the drive clutch sheaves Measure the opposite side gap using a feeler gauge 3 A slight very drag should be felt when inserting the feeler gauge between the belt and sheave face 4 Compare measured gap to the specification The distance between the moveable and stationary clutch sheaves and thus the belt to sheave clearance is determined by the number and thickness of the washer s installed between the spider and clutch spacer To increase the clearance add or ins
33. s GER COLOR nica LOAD 2 4 Ibs LOAD 1 4 Ibs Rate Lbs In 7043516 4 4 11 2 90 135 45 7043517 4 95 12 6 115 160 45 7043515 4 77 12 1 130 180 54 5 7043495 4 74 12 140 200 60 9 zasa PO 3 85 9 8 105 180 73 7043514 4 125 10 5 125 200 73 7043496 4 4 11 2 145 220 73 7043512 3 74 9 5 120 210 91 NOTE Tag each spring with the part number and spring force when not in use Not including tab TERRAIN DOMINATION E gt POLARIS 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 7 9 PVT System P2 Helix Angles Straight Angle Helix 42S Example Helix Designation 42 Dual Straight Angle Helix 48 40 40S Example 1st Angle 2nd Angle Vertical Distance to Transition RADIUS 48 40 t E A Helix Designation 48 40 40 5 Arc to Straight Angle Helix 56 42 45 Example 1st Angle at 100 from Horizontal 2nd Angle Vertical Distance to Transition ail ie Helix Designation 56 42 45 7 10 9922854 2007 2011 IQ Service Manual O 2010 Polaris Sales Inc TERRAIN DOMINATION gt POLARIS PVT System Drive Belts Overall Center e as Side to ada Ride Out Noles Angle Center Kevlar Cords 3211080 1 426 36 2 28 115 29 2 46 62 118 4 Pa F CVT version of 3211078 3211078 1 438 36 5 be flush Standard Compound
34. tall thicker washer s To decrease the clearance remove or install thinner washer s Either way belt to sheave clearance adjustment most often requires the spider to be re indexed 7 1 6 9922854 2007 2011 IQ Service Manual i 2010 Polaris Sales Inc gt POLARIS PVT System DRIVE CLUTCH Identification Every clutch will have the clutch part numbers etched on to the cover A The X B marking is an index mark where the clutch cover C clutch spider D and the stationary sheave E should line up when the clutch is A CAUTION assembled Do not use an impact wrench to remove or install the Drive Clutch Removal clutch bolt or clutch puller Damage to the clutch and or crankshaft can occur e NOTE All clutch tools can be found at the beginning of this chapter 1 Remove the belt 2 Place the clutch holding tool PN 9314177 A on the drive clutch 3 Remove the drive clutch retaining bolt Note the placement and number of washers on retaining bolt 4 Insert the correct clutch puller into the retaining bolt hole 5 Tighten the puller into the clutch If the clutch does not come off strike the clutch puller head with a hammer If the clutch does not pop off continue to tighten the clutch puller and repeat this step TERRAIN DOMINATION gt POLARIS 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc 7 17 PVT Syst
35. to be pulled or pushed to avoid belt wear burning Clutch malfunction Check for correct clutch components or damage on the clutch Slow easy belt engagement easing on the throttle Use fast effective throttle to engage the clutch TERRAIN DOMINATION gt POLARIS 7 12 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc PVT System Drive Belt Removal Team Driven NOTE Turn the key to the OFF position and allow the engine to come to a complete stop 1 Verify the driven clutch is not in reverse Remove the LH compartment door panel CAUTION Damage to the driven clutch or L wrench will occur when attempting to open the driven clutch when the driven clutch is in the reverse position 2 Insert the L wrench PN 2874857 A into the threaded hole B located on the driven clutch and turn it clockwise until the clutch sheaves are in the open position C 3 Remove the drive belt Drive Belt Installation Team Driven 1 With the L wrench inserted into the threaded hole B and the sheaves in the open position install the drive belt NOTE Install belt so that the numbers can be read correctly on the left side of the machine or in the direction in which the belt was originally installed 2 Remove the wrench Wiggle the belt to remove slack while removing the wrench 3 Close the clutch guard TERRAIN DOMIN
36. traight edge on each side of the drive belt and measure the distance where the straight New drive belts that feature a sanded finish should be first edges intersect at the top washed with warm soapy water and allowed to air dry a prior to use 2 Inspect the belt for loose cords missing cogs cracks abrasions thin spots or excessive wear spots Always take time to warm up the belt and driveline prior to Replace if necessary operating the snowmobile Free track and skis from the 3 Inspect the belt for hour glassing extreme circular ground before engaging throttle wear in at least one spot an on both sides of the belt Hour glassing occurs when the drive train does not move and the drive clutch engages the belt lt gt POLARIS a Mena dsd PVT System Belt Wear Burn Diagnostics POSSIBLE CAUSE SOLUTION Driving at or about engagement RPM for extended periods of time in any type of snow condition Drive at higher RPM if possible Gear the machine down Make sure belt deflection is at 1 1 4 to achieve optimum starting ratio Cold weather startups Be patient Warm up engine at least 5 minutes or until it readily responds to throttle input For the quickest most efficient drive away in extreme cold weather take drive belt off machine and bring it in to a warm environment Break skis and track loose from the snow Engage throttle aggressively for short durations for initial cold drive away Towing another
37. ue Black 4 10 10 4 123 203 73 7043060 Red White 4 95 12 5 100 200 91 7043069 Red Pink 3 50 8 9 140 260 110 7043363 Black Purple 4 50 11 4 160 240 72 7043252 Black 160 280 3 70 9 4 160 280 109 7043253 Black 180 280 4 20 10 6 180 280 91 7043254 Black 140 300 3 20 8 1 140 300 146 7043255 Black 160 300 3 50 8 9 160 300 127 7043256 Black 180 300 3 90 9 9 180 300 109 NOTE Team driven springs listed with a color will have the beginning and ending spring rates painting on the spring coils Tag each spring with the part number when not in use 7 8 9922854 2007 2011 IQ Service Manual 2010 Polaris Sales Inc MINATION PVT System Polaris P2 Driven Helixes PART NUMBER DESCRIPTION 5136975 38S 5137154 40S 5137155 42S 5137160 44S 5137142 58 40 35 5137150 40 38 45 5137157 44 38 45 5137156 50 40 45 5137176 58 42 45 5137153 60 40 45 5137161 62 40 45 Polaris P2 Driven Springs Team 2009 550cc P2 NUMEES COLOR on LOAD 2 2 Ibs LOAD 1 1 lbs Rate Lbs In 7043397 4 4 11 2 100 150 45 7043398 4 95 12 6 125 175 45 7043151 4 76 12 1 140 200 54 17043150 Black 4 2 10 6 140 220 65 7043430 4 4 11 2 160 240 72 7043152 4 1 10 4 120 200 73 17043149 4 7 11 9 140 240 90 Polaris P2 Tab Driven Spring
38. ven clutch will exert too much force on the belt and can cause premature belt failure TERRAIN DOMINATION gt POLARIS PVT System Back Shifting Back shifting occurs when the track encounters an increased load demand for more torque Back shifting is a function of a higher shift force within the driven clutch than within the drive clutch Several factors including riding style snowmobile application helix angles and vehicle gearing determine how efficient the drive system back shifts The desired engine operating RPM should never fall below 200 RPM when the drive system back shifts Final Gearing The final drive gear ratio plays an important role in how much vehicle load is transmitted back to the helix A tall gear ratio lower numerical number typically results in lower initial vehicle acceleration but a higher top end vehicle speed A lower gear ratio higher numerical number typically results in a higher initial vehicle acceleration but a lower top end vehicle speed Choosing the proper gear ratio is important to overall drive system performance When deciding on which gear ratio to use the operator must factor in the decision where the snowmobile will be ridden what type of riding will be encountered and the level of performance the operator hopes to achieve Gearing a snowmobile too low for extended high speed runs may cause damage to the drive belt and drive system while gearing a snowmobile too high
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