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MTD 643B Tiller User Manual

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6. To avoid personal injury or property damage use extreme care in handling gasoline Gasoline is extremely flammable and the vapors are explosive Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite Wash your skin and change clothes immediately Use only an approved gasoline container Extinguish all cigarettes cigars pipes and other sources of ignition Never fuel machine indoors 10 Never remove gas cap or add fuel while the engine is hot or running 11 Allow engine to cool at least two minutes before refueling 12 Never over fill fuel tank Fill tank to no more than 1 2 inch 13 below bottom of filler neck to provide space for fuel expan sion Replace gasoline cap and tighten securely 14 If gasoline is spilled wipe it off the engine and equipment Move machine to another area Wait 5 minutes before starting the engine 15 Never store the machine or fuel container inside near an open flame spark or pilot light e g furnace water or space heater clothes dryer etc 16 Allow machine to cool 5 minutes before storing Operation 1 8 9 10 11 14 15 16 Do not put hands or feet near rotating parts Contact with the rotating parts can amputate hands and feet Do not operate machine while under the influence of alcohol or drugs Never operate this machine without good visibility or light Always be sure of your footing and keep a f
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13. in personal injury or property damage See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine 3 Remove clevis pin and cotter pin A Figures 3 2 and 3 3 from wheel drive shaft B 4 FOR WHEEL DRIVE MODE Figure 3 2 Slide wheell outward and align holes in wheel hub D Figure 3 2 and wheel shaft B Insert clevis pin A through wheel hub C and wheel shaft B and secure with cotter pin Repeat with the other wheel and then remove the support from beneath the transmission Figure 3 2 WHEEL DRIVE position 5 FOR FREEWHEEL MODE Figure 3 3 Slide the wheel inward and insert the clevis pin A Figure 3 3 secure with cotter pin C only through the hole in the wheel shaft B Repeat for the other wheel and then remove the support from beneath the transmission WARNING Before starting engine be sure that both wheels are in WHEEL DRIVE position See Wheels Drive Pins for instructions Engaging the Forward Clutch Bail or Reverse Clutch Control if equipped when the wheels are not in WHEEL DRIVE could allow the tines to rapidly propel the tiller forward or backward Failure to comply could cause loss of tiller control property damage or personal injury FORWARD CLUTCH BAIL The Forward Clutch Bail D Figure 3 4 controls the engagement of forward drive to the wheels and tines To operate the Forward Clutch Bail 1 Put wheels in WHEEL DRIVE posit
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16. 0 312 18 x 1 0 Dent Bolo CG Dent Bolo CD Dent sur le support de montage A Dent sur le support de montage B C Ensemble de rechange de dent Bolo inclut huit dents c t droite huit dents c t gauche et boulonnerie requis A For Model 643C Pour mod le 643C B For Model 643B Pour mod le 643B C For Model 645A Pour mod le 645A 25 21A 6431 11 20 06 Parts List Pieces d tach es For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires 26 REF PART NO NO N DE N DE R F PI CE DESCRIPTION 1 GW 9517 Snap Ring Jonc d arr t 2 GW 1714 Bearing Roulement 3 GW 50043 Washer Rondelle 4 711 04110 Drive Shaft Arbre d entrainement 5 GW 1224 1 Shim 010 Thick Cale 0 010 GW 1224 2 Shim 030 Thick Cale 0 030 GW 1224 3 Shim 005 Thick Cale 0 005 GW 1224 4 Shim 062 Thick Cale 0 062 GW 1325C Shim Set Cale fixe 1224 1 2 1224 2 2 1224 4 1 21A 6431 03 09 06 Use as required to obtain between 005 and 015 allowable end play REF PART NO NO N DE N DE REF PIECE DESCRIPTION 1 GW 9727 Plug Transmisison Oil Fill Bouchon 2 710 04049 Hex Hd Flg Scr 5 16 18 x 5 8 Gr 5 Vis t te hex 5 16 18 x 5 8 Qual 5 3 736 0119 Lockwasher 5 16 Rondelle frein 5 16 4 1918377 Rear Cover Transmissi
17. 04381 Worm Gear Tiller Shaft Engrenage arbre 21A 6434 11 20 06 Use as required to obtain between 005 and 030 allowable end play A For Model 643C Pour mod le 643C B For Model 643B Pour mod le 643B C For Model 645A Pour mod le 645A 27 Parts List Pieces d tach es RS 65 gt m ld p o PARTS For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires MODELS MODELES 643B 643C 643D amp 645A Q 76 RO On Kg L ESE 12 MODEL MODELE 643 8 6430 28 REF PART NO NO N DE N DE R F PIECE DESCRIPTION DESCRIPTION 1 736 0159 Flat Washer 349 ID x 879 OD x 063 Rondelle plate 0 349 DI x 0 879 DE x 0 063 2 756 04198 Engine Drive Pulley Poulie 3 656 04023 Transmission Pulley A Poulie transmission A 3 656 04005 Transmission Pulley B C Poulie transmission B C 4 756 04169 Pulley Reverse Idler B C Poulie B C 5 786 04095 Guard Belts Pulleys Protecteur courroie poulie 6 754 04090 Forward Drive Belt Courroie d entrainement avant 7 754 04091 Reverse Drive Belt B C Courroie d entraiinement arri re B C 8 731 05268 Belt Cover Courroie 9 732 04289 Reverse Return Spring B C Ressort B C 10 732 04081 Belt Guide B C Protecteur de la courroie B C 11 732 04
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20. 2 With the tiller on level ground move the Depth Regulator Lever FF Fig 2 10 up or down until the engine is level 3 Add motor oil as described in the Engine Owner s Manual 4 Move the Depth Regulator Lever all the way down until the highest notch is engaged This places the tines in the travel position which allows the tiller to be moved without the tines touching the ground STEP 8 CHECK HARDWARE Check all nuts and screws for tightness STEP 9 CHECK AIR PRESSURE IN TIRES units with pneumatic tires Check the air pressure with a tire gauge Deflate or inflate the tires equally to between 15 PSI and 20 PSI pounds per square inch Be sure that both tires are inflated equally or the unit will pull to one side Flat Side Fig 2 8 Install reverse cable bracket and reverse clutch cable Fig 2 9 Route reverse clutch cable CC as shown Attach with cable tie EE so Fig 2 10 Adjust Depth Regulator Lever Fig 2 11 Remove gear oil fill plug Forward Clutch Bail Reverse Clutch Control Models 643B amp 645A Depth Regulator Tine Hood Flap Counter Rotating Tines CRT Wheel Drive Pin on each wheel Figure 3 1 Tiller featrues and controls See separate Engine Owner s Manual to identify engine controls INTRODUCTION This Section describes the location and function of the controls on your tiller Refer to the following Section Operation for detailed operating
21. 30 weight motor oil is suitable and clean general purpose grease grease containing a metal lubricant is preferred if available Remove the wheels clean the wheel shaft A Fig 5 1 and apply a thin coating of grease to the wheel shaft Grease the back front and sides of the depth regula tor lever B Fig 5 1 Remove the tines and clean the tine shaft C Fig 5 1 Use a file or sandpaper to gently remove any rust burrs or rough spots especially around holes in shaft Apply grease to ends of shaft before installing tines e il the threads on the handlebar height adjustment screws and the handlebar attaching screws D Fig 5 1 Figure 5 1 CHECK FOR OIL LEAKS Before each use check the tiller for signs of an oil leak usually a dirty oily accumulation either on the unit or on the floor A little seepage around a cover or an oil seal is usually not a cause for alarm However if the oil drips overnight then immediate attention is needed Ignoring an oil leak can result in severe transmission damage If a cover is leaking check for loose screws If the screws are tight a new gasket or oil seal may be required If the leak is from around a shaft and oil seal the oil seal probably needs to be replaced See your authorized dealer or contact the factory for service or advice IMPORTANT Never operate the tiller if the transmission is low on oil Check the oil level after every 30 hours of operation an
22. 5 710 0874 Hex Screw 5 16 18x 1 25 Gr 5 Vis t te hexagonale 5 16 18 x 1 25 6 710 3008 Hex Bolt 5 16 18 x 75 Lg Gr 5 Boulon hex 5 16 18 x 0 75 po de Ig Qual 5 7 712 04063 Fig L Nut 5 16 18 Gr F Nylon Contre crou embase 5 16 18 Qual F nylon 8 712 04064 Fig L Nut 1 4 20 Gr F Nylon Contre crou embase 1 4 20 Qual F nylon 9 715 0108 10 732 04320 11 736 0275 12 750 04149 13 750 04160 14 750 04556 15 786 04092 16 786 04098 17 786 04104 18 786 04191 19 786 04290 20 786 04291 21 786 04292 22 710 0106 23 710 04163 24 712 3009 25 712 0121 26 712 0291 27 732 04185 28 746 04208 29 746 04058 30 747 04210 31 749 04084 32 749 04208 33 749 04106 34 732 04040 35 786 04188 36 786 04200 37 710 0216 38 710 0805 39 712 3000 40 736 0119 41 725 0157 42 736 3050 43 712 04065 44 710 0347 45 710 0514 46 710 04048 47 742 04117 48 742 04116 49 686 04066 686 04065 GW 1901 Spring Pin Spiral 1 4 Dia x 1 00 Lg Depth Regulator Spring Flat Washer 34 ID x 688 OD x 065 Spacer 462 x 328 x 1 63 Bushing Spacer Reverse Stop Arm Channel Support Bracket Drag Bar Flap Stop Bracket Hood Bracket LH Hood Bracket RH Adjustable Depth Bar Hex Screw 1 4 20 x 1 25 Screw No 10 24 x 2 Hex L Nut 5 16 18 Hex Nut 10 24 Hex Cent L Nut 1 4 20 Forward Clutch Spring Forward Clutch Cable Assembly Reverse Clutch Cable Assembly Forward Clutch Bail Upper Handlebar Lower Handlebar Upper Handle Gull Wing
23. 9 16 open end wrench wheels 1 3 8 open end wrench 1 Tire pressure gauge for models with pneumatic 1 Large adjustable wrench tires Models 643B amp 645A only 1 Clean oil funnel 1 Scissors to trim plastic ties 1 Motor oil Refer to the Engine Owner s Manual for 1 Ruler for belt tension check oil specifications and quantity required Adjustable wrenches may be used ASSEMBLY STEPS STEP 1 UNPACKING INSTRUCTIONS NOTE While unpacking do not severely bend any control cables IMPORTANT Motor oil must be added to the engine crankcase before the engine is started Follow the instructions in this Section and in the separate Engine Owner s Manual STEP 2 ATTACH HANDLEBAR 1 Loosely attach the legs of the handlebar support A Fig 2 2 to the inner sides of the tiller frame using two 3 8 16 x 3 4 hex hd screws B 3 8 flat washers and 3 8 16 hex locknuts 2 Using two 5 16 18 x 1 1 2 screws C 5 16 split lock washers D and 5 16 18 hex nuts G loosely attach the handlebar support A using the upper holes Tighten the two screws securely 1 The tiller weighs approximately 133 lbs Do not attempt to remove it from the shipping platform until instructed to do so in these Assembly steps 2 Remove any packaging material from the carton Remove any staples from the bottom of the carton and remove the carton from the shipping platform 3 Remove all unassembled parts
24. GASOLINE IS HIGHLY FLAMMABLE AND ITS VAPORS ARE EXPLOSIVE Follow gasoline safety rules in this Manual see Section 1 and in the separate Engine Owner s Manual Failure to follow gasoline safety instructions can result in serious personal injury and property damage 12 Reverse Clutch Control Models 643B amp 645A Figure 4 1 Tiller features and controls See separate Engine Owner s Manual to identify engine controls 7 Fillthe fuel tank with gasoline according to the direc tions in the separate Engine Owner s Manual Follow all instructions and safety rules carefully 8 Attach spark plug wire to spark plug Starting the Engine The following steps describe how to start and stop the engine WARNING Do not attempt to engage the tines or wheels until you have read all of the operating instructions in this Section Also review the safety rules in Section 1 Safety and the tiller and engine controls information in Section 3 Features and Controls 1 Complete the Pre Start Checklist on this page 2 Putthe wheels in the WHEEL DRIVE position see Wheel Drive Pins in Section 3 of this manual WARNING To help prevent serious personal injury or damage to equip ment Before starting engine put both wheels in the WHEEL DRIVE position Never have wheels in FREEWHEEL position when engine is running When the wheels are in FREEWHEEL they do not hold back the tiller and the tines could propel the tiller
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28. an unusual noise or vibration stop the engine disconnect the spark plug wire and ground it against the engine Inspect thoroughly for damage Repair any damage before starting and operating 18 Keep all shields guards and safety devices in place and operating properly 19 Never pick up or carry machine while the engine is running 20 Use only attachments and accessories approved by the manufacturer Failure to do so can result in personal injury 21 If situations occur which are not covered in this manual use care and good judgment Contact Customer Support or your authorized dealer Maintenance amp Storage 1 Never tamper with safety devices Check their proper operation regularly 2 Check bolts and screws for proper tightness at frequent intervals to keep the machine in safe working condition Also visually inspect machine for any damage 3 Before cleaning repairing or inspecting stop the engine and make certain the tines and all moving parts have o stopped Disconnect the spark plug wire and ground it against the engine to prevent unintended starting Do not change the engine governor settings or over speed the engine The governor controls the maximum safe operat ng speed of the engine Maintain or replace safety and instruction labels as neces sary Follow this manual for safe loading unloading transporting and storage of this machine Never store the machine or fuel containe
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35. follow this warning could result in personal injury Maintenance WARNING Before inspecting cleaning or servicing the machine shut off engine wait for all moving parts to come to a complete stop disconnect spark plug wire and move wire away from spark plug Failure to follow these instructions can result in serious personal injury or property damage Loading and unloading the tiller into a vehicle is potentially hazard ous and we don t recommend doing so unless absolutely nec essary as this could result in personal injury or property damage However if you must load or unload the tiller follow the guidelines given next Hold bail against handlebar while taking second measurement of spring Figure 5 4 To check forward belt tension take two measure ments of the overall length of the boils in the spirng first with the clutch bail open then with the clutch bail closed against the handlebar e Repeat Steps 2 and 3 to re measure the length of the spring When the second measurement is between 1 16 to 3 16 longer than the first measurement retighten the hex nut C against the top of the adjuster B Replacement Belt Information If the drive belt needs to be replaced see your local authorized dealer or refer to the Parts List for ordering information Use only a factory authorized belt as an over the counter belt may not perform satisfactorily The procedure requires av
36. instructions Practice using these controls with the engine shut off until you understand the operation of the controls and feel confident with each of them ENGINE CONTROLS Refer to the engine manufacturer s Engine Owner s Manual included in the tiller literature package to identify the controls on your engine IMPORTANT The control for stopping the engine is located on the engine WHEEL DRIVE PINS Each wheel is equipped with a cotter pin and clevis pin C Figures 3 2 and 3 3 that secures the wheel to the wheel shaft B The wheels can be positioned in either a WHEEL DRIVE or a FREEWHEEL mode WARNING Never allow either of the wheels to be in the FREEWHEEL position when the engine is running Always put both wheels in the WHEEL DRIVE position before starting the engine Failure to comply could cause loss of tiller control property damage or personal injury Before starting the engine put both wheels in the WHEEL DRIVE position by inserting the wheel drive Klik pins through the wheel hubs and the wheel shaft Doing so locks the wheels to the wheel shaft causing the wheels to turn when either the Forward Clutch Bail all models or the Reverse Clutch Control Models 643B amp 645A is engaged Use the FREEWHEEL mode only when the engine is not running In FREEWHEEL the wheel drive pins are placed only through the holes in the wheel shaft not the wheel hubs thus allowing the wheels to turn free
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39. rapidly forward or backward Before starting engine put Forward Clutch Bail all models and Reverse Clutch Control Models 643B amp 645A only in neutral disengaged posi tions by releasing levers Neverrun engine indoors or in enclosed poorly ventilated areas Engine exhaust contains carbon monoxide an odorless and deadly gas Avoid engine muffler and nearby areas Tempera tures in these areas may exceed 150 F 3 Move the Depth Regulator Lever all the way down to the travel position so that the tines clear the ground 4 Release all controls on the tiller 5 On engine s with a fuel shut off valve turn valve to open position as instructed in the separate Engine Owner s Manual 6 Put ignition switch and or throttle control lever located on engine in the ON RUN FAST or START position as instructed in the Engine Owner s Manual 7 Choke or prime engine as instructed in Engine Owner s Manual i 2 EPE R Ee Figure 4 2 Use one hand to guide tiller when moving 8 Put one hand on fuel tank to stabilize unit when pulling forvard starter rope handle Then use recoil starter to start engine as instructed in the Engine Owner s Manual When engine starts gradually move choke lever if so equipped to NO CHOKE CHOKE OFF or RUN position 9 Use the FAST throttle speed setting when tilling Stopping the Engine and Tiller To s
40. residential use limited warranty belts batteries bushings seals tines tires wheels paint appearance items and similar items that are normally replaced through periodic maintenance Charges for pick up delivery and service calls are not covered by this warranty Service completed by someone other than an authorized service dealer is not covered by this warranty Parts that are not genuine Troy Bilt LLC service parts are not covered by this warranty The engine is warranted separately by the engine manufacturer Refer to the engine manufacturer s warranty for terms and conditions Failure to comply with suggested maintenance and lubrication specifications will void warranty LIMITED If used for commercial institutional industrial rental or demonstrator purposes COMMERCIAL the warranty on the tiller is limited in duration to 90 days from the date of purchase USE WARRANTY This warranty does not apply to parts that have been damaged by accident altera tion misuse abuse neglect improper maintenance vandalism theft fire water or damage because of peril or other natural disaster HOW TO OBTAIN Warranty service is available with proof of purchase through your local authorized SERVICE service dealer To locate a dealer in your area consult 1 800 668 1238 or log onto our website at www troybilt ca The provisions set forth in this warranty provide the sole and exclusive remedy arising from the sale Troy Bilt LLC s
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42. 079 Belt Guide Protecteur de la courroie 12 786 04068 Engine Bracket LH Support du moteur CG 13 786 04069 Engine Bracket RH Support du moteur CD 14 786 04070 Belt Cover Bracket Support de couvercle de la courroie 15 748 04087 Shoulder Washer Rondelle 16 786 04276 Reverse Idler Arm Bras de tendeur arri re 17 786 04275 Forward Idler Lever Levier de tendeur avant 18 710 0672 Hex HD Cap Scr 5 16 24 x 1 25 Lg A Vis t te hex 5 16 24 x 1 25 po de Ig A 710 0117 Hex Scr 5 16 24 x 1 00 B C Vis t te hex 5 16 24 x 1 00 B C 19 710 0237 Hex Screw 5 16 24 x 62 Vis t te hex 5 16 24 x 0 62 20 710 0376 Hex Scr 5 16 x 1 00 Gr 5 Vis t te hex 5 16 x 1 00 Qual 5 21 710 04049 Hex Hd Screw 5 16 18 x 5 8 Vis t te hex 5 16 18 x 5 8 22 710 0347 Hex Screw 3 8 16 x 1 75 A Vis t te hex 3 8 16 x 1 75 A 710 0520 Hex Screw 3 8 16 x 1 50 B C Vis t te hex 3 8 16 x 1 50 B C 23 710 0599 Hex Wash S Tapp Scr 1 4 20 x 50 Vis autotaraudeuse a rondelle hex de 1 4 20 x 0 5 24 710 3103 Hex Hd Cap Scr 5 16 18 x 2 0 Gr 5 B C Vis a t te hex 5 16 18 x 2 0 Qual 5 B C 25 712 3000 Hex Cent L Nut 3 8 16 Contre crou de blocage 3 8 16 26 712 3009 Hex L Nut 5 16 18 B C crou de blocage 5 16 18 B C 27 736 0119 L Wash 5 16 ID A Rondelle frein 5 16 DI A 28 750 0535 Spacer 380 ID x 625 OD x 227 A Entretoise 0 380 DI x 0 625 DE x 0 227 A 736 3050 Flat Washer 406 ID x 81 B C Rondelle plate 0 406 DI x 0 81 B C
43. 1 4 If it is less than 1 8 and if there is no reverse action when the tiller is running then make the following adjustments NOTE If the length is more than 1 4 no adjustment is needed as long as the reverse action functions properly 4 Figure 5 5 Measure cable wire length to check for correct reverse belt tension 5 Release the Reverse Clutch Control knob and then unthread the inner jam nut C Figure 5 6 one to two turns Pull the threaded cable adjuster A Figure 5 6 to the left until the inner jam nut C touches the bracket o Prevent the inner jam nut C from turning and tighten the outer jam nut D against the bracket Prevent the outer jam nut D from turning and tighten the inner jam nut C against the bracket 7 Measure the gap by repeating Step 3 Readjust as needed by repeating Steps 5 and 6 8 Reinstall the belt cover Figure 5 6 Move threaded adjuster A to left to increase belt tension 20 Replacement Belt Information If the drive belt needs to be replaced see your local authorized dealer or refer to the Parts List for ordering information Use only a factory authorized belt as an over the counter belt may not perform satisfactorily The procedure requires average mechanical ability and commonly available tools ENGINE CLEANING Keeping the engine clean will help to ensure smooth operation and prevent damage from overheating Refer to the Engine O
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45. 29 736 3090 Flat Washer 260 x 687 x 062 Rondelle plate 0 260 x 0 687 x 0 062 30 736 0452 Cupped Washer Rondelle creuse 31 710 0459A Hex Scr 3 8 24 x 1 50 Vis t te hex 3 8 24 x 1 50 32 736 04181 Support Washer Rondelle 33 732 04085 Forward Return Spring Ressort de retour 34 786 04107 Support Mounting Bracket Support 35 756 04170 Forward Idler Pulley Poulie tendeur avant 36 714 0105 Square Key 3 16 x 1 00 Lg Clavette carr e 3 16 x 1 00 po de Ig 37 736 3078 Flat Washer 344 ID x 1 0 Rondelle plate 0 344 DI x 1 0 38 736 04193 Cupped Washer Rondelle creuse 39 710 0805 Hex Bolt 5 16 18 x 1 50 Lg Gr 5 Boulon hex 5 16 18 x 1 50 po de Ig Qual 5 710 0395 Hex Bolt 5 16 18 x 2 25 A B Vis a t te hex 5 16 18 x 2 25 A B 40 712 04063 Flange Locknut 5 16 18 Gr F Nylon Contre crou embase 5 16 18 Qual F nylon 41 750 0258 Spacer 315 ID x 375 Lg A Entretoise 0 315 DI x 0 375 po de lg A 42 736 0315 Flat Washer 76 ID x 1 5 OD x 12 A Rondelle plate 0 76 DI x 1 5 DE x 0 12 A 42 736 04192 Flat Washer 786 x 1 0 x 031 B C Rondelle plate 0 786 x 1 0 x 0 031 B C 43 736 0242 Cupped Washer 345 ID x 88 OD x 060 Rondelle creuse 0 345 DI x 0 88 DE x 0 060 44 749 04193 Bumper Butoir 45 726 0201 Push Speed Nut Ecrou rapide d enfoncer 46 714 0143 Klik Pin 1 4 Dia x 1 75 Goupille a d clique dia 1 4 x 1 75 47 734 04188 Complete Wheel Ass y 10 x 2 75 A Ensemble de roue comp 10 x 2 75 A 48 634 04232 Complete Wheel Ass y 13 x 5
46. 5 On engines with a dipstick remove it and wipe it clean Reinsert the dipstick tighten it securely and remove it Add oil as needed to bring the level up to the FULL mark Wipe dipstick clean each time oil level is checked Do not overfill Tighten dipstick securely B To Change the Engine Oil Change the engine oil as instructed in the Engine Owner s Manual SPARK PLUG SERVICE Inspect and clean or replace the spark plug after every 100 operating hours or annually Refer to the Engine Owner s Manual for spark plug service instructions In some areas local law requires using resistor spark plugs to suppress ignition signals If the engine was originally equipped with a resistor spark plug use the same type for replacement SPARK ARRESTER SCREEN SERVICE If the engine muffler is equipped with a spark arrester Screen remove and clean it according to the service intervals and instructions in the Engine Owner s Manual THROTTLE LEVER ADJUSTMENT If the engine does not respond to various throttle lever settings refer to the Engine Owner s Manual for service information or contact your local authorized engine dealer CARBURETOR GOVERNOR CONTROL ADJUSTMENTS The carburetor was adjusted at the factory for best operating speed Refer to the Engine Owner s Manual for any adjustment information or see your authorized engine dealer The governor controls the maximum safe operating speed and protects the engine and all moving
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52. Reverse Clutch Cable Bracket Handlebar Support Panel Hex Cap Screw 3 8 16 x 75 Hex Bolt 5 16 18 x 1 50 Lg Gr 5 Hex Cent L Nut 3 8 16 L Wash 5 16 ID Cable Tie Flat Washer 406 ID x 81 Flange Lock Nut 3 8 16 Gr F Nylon Hex Screw 3 8 16 x 1 75 Hex Screw 3 16 x 1 00 Flange Screw 312 18 x 1 0 Single Bolo Tine LH Single Bolo Tine RH Tine Holder A Tine Holder B C Bolo Tine Replacement Set incl eight right hand tines eight left hand tines and required hardware Goupille ressort dia 1 4 x 1 00 po lg Ressort Rondelle plate 0 34 DI x 0 688 DE x 0 065 Entretoise 0 462 x 0 328 x 1 63 Coussinet Entretoise Bras arri re arr t Support de la glissiere Barre d attelage Support Support de capot CG Support de capot CD Barre de profondeur d reglabe Vis t te hexagonale 1 4 20 x 1 25 Vis no 10 24 x 2 crou de blocage 5 16 18 crou hexagonal 10 24 Contre crou de blocage 1 4 20 Ressortd embrayage avant Cable Embrayage d avant Cable Embrayage d arriere Etrier d embrayage avant Guidon superieur Guidon inferieur Guidon superieur Support de cable Support du guidon Panneau Vis chapeau six pans de 3 8 16 x 0 75 Boulon hex 5 16 18 x 1 50 po de Ig Qual 5 Contre crou de blocage 3 8 16 Rondelle frein 5 16 DI Attache cable Rondelle plate 0 406 DI x 0 81 Contre crou embase 3 8 16 Qual F nylon Vis t te hex 3 8 16 x 1 75 Vis a t te hexagonale 3 8 16 x 1 00 Vis
53. Safety e Assembly Features amp Controls Operation Maintenance Troubleshooting Warranty e Parts Lists OPERATOR S MANUAL OTROV BILT Rear Tine Tiller Model 643B 643C amp 645A IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATING EQUIPMENT 772C0845A PRINTED IN U S A MTD Products Ltd P O Box 1386 KITCHENER ONTARIO N2G 4J1 11 20 06 This Operator s Manual is an important part of your new equipment It will help you assemble prepare and maintain the unit for best performance Please read and understand what it says Table of Contents Safety Operation Practices 3 Maintenance amp Off Season Storage 17 AASSEMm D YL sss nn 5 Trouble Shooting 22 Features amp Controls ccs 9 Warranty mc 23 Operating Your Tiller 12 Illustrated Parts Lists 24 Finding and Recording Model Number BEFORE YOU START ASSEMBLING YOUR NEW EQUIPMENT Model Number Serial Number please locate the model plate on the equipment and copy the Num ro de mod le Num ro de s rie the model number and the serial number to the sample model XXX XXXXXX XXXXXXXXXXX plate provided to the right You can locate the model plate by standing at the operating position and looking down at the rear of the m
54. achine OTROY BILT TOL CANADA KITCHENER ON N2G 4J1 Customer Support Please do NOT return the unit to the retailer from which it was purchased without first contacting Customer Support If you have difficulty assembling this product or have any questions regarding the controls operation or maintenance of this unit You can seek help from the experts choose from the options below 1 Visit www troybilt ca for many useful suggestions click on Customer Support button 2 Call a Customer Support Representative at 1 800 668 1238 3 The engine manufacturer is responsible for all engine related issues with regards to performance power rating specifica tions warranty and service Please refer to the engine manufacturer s Owner s Operator s Manual packed separately with your unit for more information Please have your unit s model number and serial number ready when you call See previous section to locate this information You will be asked to enter the serial number in order to process your call DANGER This machine was built to be operated according to the rules for safe operation in this manual As with any type of power equipment carelessness or error on the part of the operator can result in serious injury This machine is capable of amputating hands and feet and throwing objects Failure to observe the following safety instructions could result in serious injury or death Training 1 Read understand an
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57. and the separate hardware bag from the carton Check that you have the items listed in the Loose Parts List contact your local dealer or the factory items are missing or damaged NOTE Use the screw length template Fig 2 1 to identify screws Loose Parts List Qty Description 1 Handlebar Support see A Fig 2 2 1 Handlebar Assembly see K Fig 2 2 Hardware bag contents Hex hd screw 5 16 18 x 1 1 2 Hex hd screw 3 8 16 x 3 4 Flat Washer 3 8 Split lock washer 5 16 Hex nut 5 16 18 Hex locknut 3 8 16 Models 643B amp 645A only Figure 2 1 To identify length of screws place screw on template as shown and measure distance between bottom of screw head and tip of screw D P ENTE Assembly NOTE Stand behind the tiller as if you were going to operate it Your right hand corresponds to the right side of the tiller your left hand corresponds to the left side of the tiller NOTE This operator s manual may cover various models of tillers The units illustrated may vary slightly from your unit Follow only those instructions which pertain to your model number IMPORTANT This unit is shipped without gasoline or oil in the engine Fill up gasoline and oil as instructed in the accom panying engine manual BEFORE operating your machine Assem bly The support brackets must be assembled to the outside of the handlebar assembly IMPORTANT The support brackets must
58. ating breaking up surface soil around plants to destroy weeds see Fig 4 9 a just the tines to dig only 1 to 2 deep Using shallow tilling depths helps prevent injury to plants whose roots often grow close to the surface If needed lift up on the handlebars slightly to prevent the tines from digging too deeply Cultivating on a regular basis not only eliminates weeds it also loosens and aerates the soil for better moisture absorption and faster plant growth Watering the garden area a few days prior to tilling will make tilling easier as will letting the newly worked soil set for a day or two before making a final deep tilling pass Choosing Correct Wheel amp Tine Speeds With experience you will find the just right tilling depth and tilling speed combination that is best for your garden Set the engine throttle lever at a speed to give the engine adequate power and yet allow it to operate at the slowest possible speed at least until you have achieved the maximum tilling depth you desire Faster engine speeds may be desirable when making final passes through the seedbed or when cultivating Selection of the correct engine speed in relation to the tilling depth will ensure a sufficient power level to do the job without causing the engine to labor 14 Let the Tiller Do the Work While tilling relax and let the wheels Whenever possible walk on the untilled pull the tiller along while the tines do side of the unit to avoid mak
59. be assembled to the outside of the handle bar assembly IMPORTANT Before starting the engine the wheels must be placed in the WHEEL DRIVE position pins through wheel hubs and wheel shaft This procedure is described in Wheel Drive Pins on page 10 Fig 2 2 Attach handlebar 3 There are three height adjustment holes in the two handlebar support brackets E and F Fig 2 2 Use a setting that will position the handlebars at approximately waist level when the tines are 3 4 into the soil Loosely attach the support brackets to the outside of the handlebar assembly I using two 5 16 18 x 1 1 2 screws G 5 16 split lock washers D and 5 16 18 hex nuts G NOTE If a support bracket will not move loosen attaching screw H and nut 4 Tighten all handlebar mounting hardware securely STEP 3 MOVE TILLER OFF CRATE To roll the tiller off the shipping platform put the wheels in freewheel as follows 1 Place a sturdy block under the transmission to raise one wheel about 1 off the ground 2 Remove the hairpin cotter L Fig 2 3 and wheel drive pin M from the wheel hub O and wheel shaft N Fig 2 3 Wheel in FREEWHEEL position wheel drive pin through wheel shaft only 3 Slide the wheel fully inward on the wheel shaft N Fig 2 3 Reinstall the clevis pin M through the wheel shaft L only not through the wheel hub Secure with cotter pin L pushing the cotter in as far as it
60. ch succeeding lower terrace is started by walking below the terrace you re preparing For added stability of the tiller always keep the uphill wheel in the soft newly tilled soil Do not till the last 12 or more of the downhill outside edge of each terrace This untilled strip helps prevent the terraces from breaking apart and washing downhill It also provides a walking path between rows fm os i o 12 UNTILLED O DD REPEAT Fig 4 10 breaking apart and washing downhill It also provides a walking path between rows 16 MAINTENANCE SCHEDULE PROCEDURE NOTES Check motor oil level 2 3 Clean engine 2 7 Check drive belt tension 1 4 Check nuts and bolts 1 4 Change motor oil 4 6 9 Lubricate tiller 4 Service engine air cleaner system 7 Check gear oil level in transmission 1 5 Check tines for wear 5 Check air pressure in tires 5 if unit has pneumatic tires Service spark plug 7 NOTES 1 Check after first 2 hours of break in operation 2 Before each use 3 Every 5 operating hours 4 Every 10 operating hours 5 Every 30 operating hours 6 Change more frequently in dusty conditions 7 See Engine Owner s Manual for service recommendations 8 Whichever time interval occurs first 9 Change after first 2 hours of break in TILLER LUBRICATION After every 10 operating hours oil or grease the lubrica tion points shown in Figure 5 1 and described below Use clean lubricating oil
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62. d follow all instructions on the machine and in the manual s before attempting to assemble and operate Keep this manual in a safe place for future and regular reference and for ordering replacement parts Be familiar with all controls and their proper operation Know how to stop the machine and disengage them quickly Never allow children under 14 years old to operate this machine Children 14 years old and over should read and understand the operation instructions and safety rules in this manual and should be trained and supervised by a parent Never allow adults to operate this machine without proper instruction Keep bystanders helpers pets and children at least 75 feet from the machine while it is in operation Stop machine if anyone enters the area Preparation 1 T 8 9 Thoroughly inspect the area where the equipment is to be used Remove all stones sticks wire and other foreign objects which could be tripped over and cause personal injury Wear sturdy rough soled work shoes and close fitting slacks and shirt Loose fitting clothes or jewelry can be caught in movable parts Never operate this machine in bare feet or sandals Disengage clutch levers and shift if provided into neutral N before starting the engine Never leave this machine unattended with the engine running Never attempt to make any adjustments while engine is running except where specifically recommended in the operator s manual
63. d whenever there is any oil leakage CHECK HARDWARE Check for loose or missing hardware after every 10 operating hours and tighten or replace as needed before reusing tiller Be sure to check the screws underneath the tiller hood that secure the transmission cover and the Depth Regula tor Lever to the transmission CHECK TIRE PRESSURE Models with pneumatic tires Check the air pressure in both tires The air pressure should be between 15 PSI and 20 PSI pounds per square inch Keep both tires equally inflated to help prevent machine from pulling to one side 17 Maintenance WARNING Before inspecting Cleaning or servicing the machine shut off engine wait for all moving parts to come to a complete stop disconnect spark plug wire and move wire away from spark plug Failure to follow these instructions can result in serious personal injury or property damage See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine Maintenance WARNING Before clearing the tines by hand stop the engine allow all mov ing parts to stop and disconnect the spark plug wire Remove the ignition key on electric start models Failure to follow this warning could result in personal injury See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine TRANSMISSION GEAR OIL SERVICE Check the transmission gear
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67. ebi ajno z ubl 4 pneu 159 Jnajouw puenb no auno 1nojoui 9 anb juepued in H luL l e o2uesse p ul ld l s ewef Soyez N JIso dxe juos sin d BA Sal Jo lqEululE ul 1 159 u ss e2uessa ep juejndiueu ua uohu ne 5911 sajle4 uos JaljI POW no uos ep sewel ze esso N lun s ep jrisod SIP un So sjuap s p eDe e1quie epueuiuioo euisiueaoui T ININISSILHIAY uonesunn LE majou Np 9jnoi ua esiu e ueuJ82u09 Wa eufiesuei 1no inod 4n oul np uonesi nn p nou e zejjnsuo in8jjnoojoui e ap 1nojou np eueuuojnoq e zeoe deu uauiaAnoui ua s ld uopinf l zeuuonisodel je eueuuo noq e zeJllaH Z s l Sajno ap sejsnfe INBJOW 9 Zessie uou S U9UI9 9 39 ej ep e zeuoueiqep inajow 9 Z Y Xn A u speid suw uopin aj Jojsnfe anod SOA s nolno zeubio 3 H e suep od p no e e segouojue pow sopoul zeb un 1405 sjuep S puenb 1nejonpuoo np ajjtey e ep uneyney euoqie9 ep ep xououi uopinB zejsnfe ajesouab ejerueu aq 9 uni np 1ueuuanuoo Jnajoui sunejneu sioJ e asnfe n jnod uopinf 97 np juawaddey39 p zeb NOGIND na YNILNVH 7 30 35YT53uH 597 9 IuaA eui no SO eso un suep no jnougjui e ANSJOUL s p no sej eJod1oo seinsse q sep JeujeJue VETUS X n d jueujessme e
68. emoving both tine assemblies mark them left and right before removal Remove the screw C Figure 5 3 and locknut D that secure the tine assembly to the tine shaft If necessary use a rubber mallet to tap the tine assembly outward off the shaft 3 Before reinstalling the tine assembly inspect the tine shaft for rust rough spots or burrs Lightly file or sand as needed Apply a thin coat of grease to the shaft 4 Install each tine assembly so that the cutting sharp edge of the tines will enter the soil first when the tiller moves forward Secure the tine assembly to the tine shaft using the screw and locknut CHECKING AND ADJUSTING FORWARD DRIVE BELT TENSION It is important to maintain correct tension on the forward drive belt A loose belt will cause the tines and wheels to slow down or stop completely even though the engine is running at full speed A too tight belt can result in unintentional tine movement when the clutch bail is in the Neutral released position Check belt tension after the first two hours of break in operation and after every 10 operating hours Atthe end of each tilling season check the belt for cracks cuts or frayed edges and replace it as soon as possible To Check Forward Belt Tension 1 Stop engine wait for all parts to stop moving and disconnect spark plug wire 2 With the Forward Clutch Bail in an open released position measure and note the overall length
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70. erage mechanical ability and commonly available tools FORWARD CLUTCH BAIL ADJUSTMENT If the Forward Clutch Bail does not function properly first check that the forward drive belt is adjusted properly see Checking and Adjusting Forward Drive Belt Tension If this fails to correct the problem contact your authorized dealer for service advice CHECKING AND ADJUSTING REVERSE DRIVE BELT TENSION Models 643B amp 645A only It is important to maintain correct tension on the reverse drive belt A loose belt will cause the tines and wheels to slow down or stop completely even though the engine is running at full speed When checking belt tension also check the belt for cracks cuts or frayed edges and replace it as soon as possible Check belt tension after the first two hours of break in operation and after every 10 operating hours To Check Reverse Belt Tension 1 Stop engine wait for all parts to stop moving and disconnect spark plug wire 2 Remove screw in plastic belt cover and slide belt cover which is attached to forward clutch cable out of the way 3 Have an assistant pull the Reverse Clutch Control knob all the way out and hold it in that position Measure the length of the cable wire between the end of the threaded cable adjuster A Figure 5 5 and the end of the Z fitting B to which the cable wire is attached 4 The belt tension is ideal if the cable wire length measures between 1 8 to
71. es rather than terracing Tilling vertically on a slope allows maximum planting area and also leaves room for cultivating IMPORTANT When tilling on slopes be sure the correct oil level is maintained in the engine check every one half hour of operation The incline of the slope will cause the oil to slant away from its normal level and this can starve engine parts of required lubrication Keep the motor oil level at the full point at all times Tilling Up and Down Slopes Vertical Tilling To keep soil erosion to a minimum be sure to add enough organic matter to the soil so that it has good moisture holding texture and try to avoid leaving footprints or wheel marks When tilling vertically try to make the first pass uphill as the tiller digs more deeply going uphill than it does downhill In soft soil or weeds you may have to lift the handlebars slightly while going uphill When going downhill overlap the first pass by about one half the width of the tiller Soil Footprints cause soil compaction that can hamper root penetration and contribute to soil erosion They can also plant unwanted weed seeds back into the freshly tilled ground ly tilled or cultivated can interfere with planting If time permits wait a day or two after heavy rains to allow the soil to dry before tilling Test soil by squeez ing it into a ball If it compresses too easily it is too wet to till Y Fig 4 9 Clearing the Tines The
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76. h the bail held against the handle bar STEP 5 INSTALL REVERSE CLUTCH CABLE MODELS 643B AND 645A ONLY Fig 2 5 Cable Fig 2 6 Attach forward spring and clutch cable spring to 1 Unwrap the reverse clutch cable CC Fig 2 8 and adjuster forward clutch bail Fig 2 9 from its shipping position and route it up to the handlebar Be sure that the cable is routed b Squeeze the Forward Clutch Bail against the beneath the Forward Clutch Bail handlebar see Fig 2 7 and re measure the spring 2 Insert the cable CC Fig 2 8 through the slot in length The belt tension is correct if this second the cable bracket and position the flat side of the measurement is between 1 16 to 3 16 longer than threaded assembly next to the flat side of the hole the first measurement If so turn the hex nut Z Slide the hex nut DD up the cable and tighten it Fig 2 7 tightly against the cable adjuster X while securely preventing the cable adjuster from turning 3 Fasten the reverse clutch cable to the left side c If the spring length is incorrect you must adjust handlebar with a cable tie EE Fig 2 9 the cable tension as described in Checking and 4 Test the function of the reverse clutch by pulling Adjusting Forward Drive Belt Tension in Section 5 out and releasing the cable knob The knob should Incorrect cable tension can result in belt slippage return to its neutral position resting against bracket cable tension to
77. hall not be liable for any incidental or consequential damage or expense of any kind including but not limited to cost of equipment rental loss of profits or costs of hiring services to perform tasks normally performed by the equipment Any implied warranties including any implied warranty of merchantability or fitness for a particular purpose shall be limited in duration to the period of ownership by the original purchaser and a maximum of 90 days from the date of sale if the tiller is purchased for commercial or other non residential use Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts so the above exclusions or limitations may not apply to you This limited warranty gives you specific legal rights and you may also have other rights which vary from state to state For customer assistance contact your nearest authorized dealer or contact us at P O Box 1386 97 Kent Avenue Kitchener Ontario Canada N2G 4J1 23 Models Modeles 6436 643B amp 645A REF PART NO NO N DE N DE REF PIECE DESCRIPTION DESCRIPTION 1 686 04076 Tine Hood Assembly Capot 686 04077 Tine Hood Asembly Capot 2 710 0395 Hex Screw 5 16 18 x 2 25 Vis t te hex 5 16 18 x 2 25 3 710 0597 Hex Screw 1 4 20 x 1 00 Vis t te hexagonale 1 4 20 x 1 00 4 710 0599 Hex Wash S Tapp Scr 1 4 20 x 50 Vis autotaraudeuse rondelle hex de 1 4 20 x 0 5
78. handlebar to steer in direction of turn Fig 4 5 After turn ing slowly lower tines into soil to resume tilling Stopping the Tiller and Engine 1 To stop the wheels and tines release the Forward Clutch Bail all models or the Reverse Clutch Control Models 643B amp 645A whichever control is in use 2 To stop the engine put the ignition switch and or the throttle control lever in the OFF or STOP position Figure 4 With tines out of ground push handlebars sideways to turn tiller TILLING TIPS amp TECHNIQUES This is a CRT counter rotating tine tiller As the wheels pull forward the tines rotate backward This creates an uppercut tine action which digs deeply uprooting soil and weeds Don t overload the engine but dig as deeply as possible on each pass On later passes the wheels may tend to spin in the soft dirt Help them along by lifting up slightly on the handlebar one hand palm up works most easily Avoid the temptation to push down on the handlebars in an attempt to force the tiller to dig deeper Doing so takes the weight off the powered wheels causing them to lose traction Without the wheels to hold the tiller back the tines will attempt to propel the tiller backward towards the operator Sometimes slight downward pressure on the handlebars will help get through a particularly tough section of sod or unbroken ground but in most cases this won t be necessary When cultiv
79. il to drain through the top of the transmis sion 6 Reinstall the wheel 7 Install a new gasket do not reuse old gasket and reinstall the transmission cover 8 Refill the transmission using GL 4 gear oil SAE 85W 140 or SAE 140 9 Refill the engine with motor oil and replenish the fuel tank with gasoline BOLO TINES The bolo tines will wear with use and should be in spected at the beginning of each tilling season and after every 30 operating hours The tines can be replaced either individually or as a complete set See the Parts List pages for tine identification and part numbers A Tine Inspection With use the tines will become shorter narrower and pointed Badly worn tines will result in a loss of tilling depth and reduced effectiveness when chopping up and turning under organic matter B Removing Installing a Single Tine 1 With the engine shut off and the spark plug wire disconnected remove the two screws A Figure 5 3 and nuts B that attach a single tine to a tine holder If needed use penetrating oil on the nuts FORWARD Figure 5 3 Install tines so that cutting edge of tines enter soil first when tiller moves forward 2 When installing a single tine be sure to position it so that its cutting edge sharp will enter the soil first as the tiller moves forward C Removing Installing a Tine Assembly 1 Atine assembly consists of eight tines mounted on a tine holder 2 f r
80. ing foot Avoid Making Footprints Avoid Tilling Soggy Wet Soil Tilling wet soil often results in large hard clumps of soil that the digging Walk on the side that prints in your fresh is not yet finished to avoid making footprints in the freshly tilled soil and lightly but securely grip the handlebar with just one hand Preparing Seedbeds When preparing a seedbed go over the same path twice in the first row then overlap one half the tiller width on the rest of the passes see Fig 4 6 When finished in one direction make a second pass at a right angle as shown in Fig 4 7 Overlap each pass for best results in very hard ground it may take three or four passes to thoroughly pulverize the soil f the garden size will not permit lengthwise and then crosswise tilling then overlap the first passes by one half a tiller width followed by successive passes at one quarter width see Fig 4 8 Cultivating With planning you can allow enough room between rows to cultivate see Fig 4 9 Leave room for the hood width plus enough extra room for future plant growth Tilling On Slopes Read the following recommendations before tilling on slopes If you must garden on a moderate slope please follow two very important guidelines 1 Till only on moderate slopes never on steep ground where footing is difficult review safety rules in Section 1 Safety of this manual 2 We recommend tilling up and down slop
81. ion see WARN ING statement above 2 Lift and hold the clutch bail D Figure 3 4 against the handlebar to start the wheels and tines rotating in a forward direction 3 Release the clutch bail to disengage stop the wheels and tines the engine will continue to run REVERSE CLUTCH CONTROL Models 643B amp 645A only The Reverse Clutch Control E Figure 3 4 controls the engagement of reverse drive to the wheels and tines The reversing feature is used for maneuvering the tiller only never engage the tines in the ground while operating in reverse Figure 3 3 FREEWHEEL position WARNING Use extreme caution when reversing or pulling the machine towards you Look behind to avoid obstacles Never attempt to till in reverse Failure to follow this warning could result in personal injury or property damage To operate the Reverse Clutch Control 1 Put wheels in WHEEL DRIVE position see WARN ING statement at the left 2 Stop all tiller motion by releasing the Forward Clutch Bail 3 Lift the handlebar until the tines clear the ground look behind you to avoid any obstacles and then pull the control knob E Figure 3 4 out The wheels and tines will rotate in a reverse direction eh Figure 3 4 All models have a Forward Clutch Bail E Only Model 634A have a Reverse Clutch Control F 4 Release the control knob to disengage stop the wheels and tines the engine will contin
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83. irm hold on the handles Keep bystanders helpers pets and children at least 75 feet from the machine while it is in operation Stop the machine if anyone enters the area Be careful when tilling in hard ground The tines may catch in the ground and propel the tiller forward If this occurs let go of the handle bars and do not restrain the machine Exercise extreme caution when operating on or crossing gravel surfaces Stay alert for hidden hazards or traffic Do not carry passengers Never operate the machine at high transport speeds on hard or slippery surfaces Exercise caution to avoid slipping or falling Look down and behind and use care when in reverse or pulling machine towards you Start the engine according to the instructions found in this manual and keep feet well away from the tines at all times After striking a foreign object stop the engine discon nect the spark plug wire and ground against the engine Thoroughly inspect the machine for any damage Repair the damage before starting and operating Disengage all clutch levers if fitted and stop engine before you leave the operating position behind the handles Wait until the tines come to a complete stop before unclogging the tines making any adjustments or inspections Never run an engine indoors or in a poorly ventilated area Engine exhaust contains carbon monoxide an odorless and deadly gas Muffler and engine become hot and can cause a burn Do
84. is Operation Section and the separate Engine Owner s Manual before you start the engine Then take the time to familiarize yourself with the basic operation of the tiller before using it in the garden Find an open level area and practice using the tiller controls without the tines engaging the soil put tines in travel setting Only after you ve become completely familiar with the tiller should you begin using it in the garden BREAK IN OPERATION Perform the following maintenance after the first two 2 hours of new operation see Maintenance Section in this manual and in the Engine Owner s Manual 1 Change engine oil 2 Check for loose or missing hardware on unit Tighten or replace as needed 3 Check tension on forward drive belt 4 Check transmission gear oil level STARTING AND STOPPING Pre Start Checklist With the spark plug wire disconnected from the spark plug perform the following checks and services before each use 1 Read the Safety and Controls Sections in this manual Read the separate Engine Owner s Manual provided with the unit 2 Putthe wheels in the WHEEL DRIVE position wheel pins must be through holes in wheel hubs and wheel shaft 3 Check unit for loose or missing hardware Service as required 4 Check engine oil level See Engine Owner s Manual 5 Check that all safety guards and covers are in place 6 Check air cleaner and engine cooling system See Engine Owner s Manual WARNING
85. it reaches the halfway point on the drive shaft 8 Securely replace the oil fill plug B To Drain the Transmission Gear Oil The transmission gear oil does not need to be changed unless it has been contaminated with dirt sand or metal particles 1 Drain gasoline from the fuel tank or run the engine until the fuel tank is empty See DANGER statement below WARNING Gasoline is highly flammable and its vapors are explosive Follow these safety practices to prevent personal injury or property damage from fire or explosion Allow the engine and muffler to cool for at least two minutes before draining the tiller s gasoline tank Donotallow open flames sparks matches or smoking in the area Wipe away spills and push tiller away from spilled fuel 18 Figure 5 2 Remove oil fill plug A to check gear oil level and to add gear oil Remove four cover screws B to drain gear oil Use only an approved fuel container and store it safely out of the reach of children Do not store gasoline in an area where its vapors could reach an open flame or spark or where ignition sources are present such as hot water and space heaters furnaces clothes dryers stoves electric motors etc 2 Drain the oil from the engine 3 Remove four screws B Figure 5 2 and remove transmission cover and gasket 4 Remove the left side wheel 5 Tilt the left side wheel shaft into a drain pan and allow the gear o
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89. ly when you manually move the tiller To place the wheels in WHEEL DRIVE or FREE WHEEL 1 Stop engine disconnect spark plug wire from spark plug and allow engine to cool WARNING Do not place tiller on its side when changing wheel drive positions Doing so could result in gasoline leaking from the fuel tank Failure to follow this instruction could result in personal injury or property damage 2 Raise one wheel about one inch off the ground and place a sturdy support under the transmission Features and Controls WARNING Before operating your machine carefully read and understand all safety controls and operating instruc tions in this Manual the separate Engine Owner s Manual and on the decals on the machine Failure to follow these instruc tions can result in serious personal injury Use extreme care when handling gasoline Gasoline is extremely flammable and the vapors are explosive Never fuel the machine indoors or while the engine is hot or running Extinguish cigarettes cigars pipes and other sources of ignition Features and Controls WARNING Do not attempt to till too deeply too quickly Gradually work down to deeper tilling depths Place the Depth Regulator Lever in the travel position before starting the engine This position prevents the tines from touching the ground until you are ready to begin tilling Failure to follow this warning could result
90. ndoors or in enclosed poorly ventilated areas Engine exhaust contains carbon monoxide an odorless and deadly gas Keep hands feet hair and loose clothing away from any moving parts on engine and tiller See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine Operating Your Tiller WARNING Do not operate tiller on a slope too steep for safe operation Till slowly and be sure you have good footing Never permit tiller to freewheel down slopes Failure to fol low this warning could result in personal injury Before tilling contact your telephone or utilities company and inquire if underground equipment or lines are used on your property Do not till near buried electric cables tele phone lines pipes or hoses b Swing the handlebar to the left so the right wheel takes a step backward Next swing the handle bar to the right so the left wheel steps backward Repeat as needed c If longer distances need to be covered in reverse shut off the engine then place the two wheels in FREEWHEEL 7 To Turn the Tiller Around a Practice turning the tiller in a level open area Be very careful to keep your feet and legs away from the tines b To begin a turn lift the handlebars until the tines are out of the ground and the engine and tines are balanced over the wheels Fig 4 4 c With tiller balanced push sideways on
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92. not touch Use caution when tilling near fences buildings and underground utilities Rotating tines can cause property damage or personal injury Do not overload machine capacity by attempting to till soil to deep at to fast of a rate Safe Operation Practices WARNING This symbol points out important safety instructions which if not followed could endanger the personal safety and or property of yourself and others Read and follow all instructions in this man ual before attempting to operate this machine Failure to comply with these instructions may result in personal injury When you see this symbol HEED ITS WARNING Your Responsibility Restrict the use of this power machine to persons who read understand and follow the warn ings and instructions in this manual and on the machine Dperation Practices WARNING This symbol points out important safety instructions which if not followed could endanger the personal safety and or property of yourself and others Read and follow all instructions in this manual before at tempting to operate this machine Failure to comply with these instructions may result in personal injury When you see this symbol HEED ITS WARNING Your Responsibility Restrict the use of this power machine to persons who read understand and follow the warnings and instructions in this manual and on the machine 17 If the machine should start making
93. o unless absolutely nec essary as this could result in personal injury or property damage However if you must load or unload the tiller follow the guidelines given Operating Your Tiller WARNING Loading and unload ing the tiller into a vehicle is potentially hazardous and we don t recommend doing so unless absolutely necessary as this could result in personal injury or property damage However if you must load or unload the tiller follow the guidelines given next LOADING AND UNLOADING THE TILLER Before loading or unloading stop the engine wait for all parts to stop moving disconnect the spark plug wire and let the engine and muffler cool The tiller is too heavy and bulky to lift safely by one person Two or more people should share the load Use sturdy ramps and manually engine shut off roll the tiller into and out of the vehicle Two or more people are needed to do this The ramps must be strong enough to support the combined weight of the tiller and any handlers The ramps should provide good traction to prevent slipping they should have side rails to guide the tiller along the ramps and they should have a locking device to secure them to the vehicle The handlers should wear sturdy footwear that will help to prevent slipping Position the loading vehicle so that the ramp angle is as flat as possible the less incline to the ramp the better Turn the vehicle s engine off and ap
94. o loose or unintentional tine If it doesn t contact your local dealer movement when the clutch bail is in Neutral cable tension too tight Assembly WARNING Read understand and follow all instructions and warnings posted on the machine and in this manual before operating STEP 6 CHECK TRANSMISSION OIL LEVEL The transmission was filled with gear oil at the factory However you should check the gear oil level at this time to make certain it is correct IMPORTANT Do not operate the tiller if the gear oil level is low Doing so will result in severe damage to the transmission components 1 With the tiller on level ground pull the Depth Regula tor Lever FF Fig 2 10 back and then all the way up until the lowest notch in the lever is engaged 2 Remove the oil fill plug GG Fig 2 11 from the transmission housing cover and locate the main drive shaft situated inside the housing 3 The gear oil level is correct if the gear oil is approxi mately halfway up the side of the main drive shaft 4 If the oil level is low add gear oil by referring to A To Check the Transmission Gear Oil Level in Section 5 STEP 7 ADD MOTOR OIL The tiller is shipped without oil in the engine IMPORTANT Do not start the engine without first adding motor oil Severe engine damage will result if the engine is run without oil 1 Refer to the separate Engine Owner s Manual for engine oil specifications and capacities
95. of the cable spring A Figure 5 4 by measuring from the outermost coil to the outermost coil 3 Squeeze the Forward Clutch Bail against the handle bar see Figure 5 4 and re measure the length of the coils The belt tension is correct if this second measurement is between 1 6 to 3 16 longer than the first measurement 4 If the spring is too short less than 1 16 the tension is too loose If the spring is too long more than 3 16 the tension is too tight 5 To adjust the length of the spring a Release the Forward Clutch Bail b Unthread the hex nut C Figure 5 4 halfway up the adjustment screw D c Unhook the top of the spring from the Forward Clutch Bail d Use pliers to prevent the adjuster B from turning and turn the slotted screw located inside the spring clockwise viewed from operator s position to increase tension on the spring Turn the screw counterclockwise to decrease tension Once adjusted reattach the spring to the Forward Clutch Bail 19 Maintenance WARNING Do not operate tiller on a slope too steep for safe operation Till slowly and be sure you have good footing Never permit tiller to freewheel down slopes Failure to fol low this warning could result in personal injury Before clearing the tines by hand stop the engine allow all mov ing parts to stop and disconnect the spark plug wire Remove the ignition key on electric start models Failure to
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97. oil level after every 30 hours of operation or whenever you notice any oil leak Operat ing the tiller when the transmission is low on oil can result in severe damage A To Check the Transmission Gear Oil Level 1 Check the gear oil level when the transmission is cool Gear oil will expand in warm operating temperatures and this expansion will provide an incorrect oil level reading 2 With the tiller on level ground pull the Depth Regula tor Lever all the way up 3 Remove the oil fill plug A Fig 5 2 from the transmis sion housing and look inside the oil fill hole to locate the main drive shaft situated below the hole 4 The gear oil level is correct if the gear oil is approxi mately halfway up the side of the main drive shaft 5 If the gear oil level is low add gear oil as described next If the gear oil level is okay securely replace the oil fill plug IMPORTANT Do not operate the tiller if the gear oil level is low Doing so will result in severe damage to the transmission components 6 If adding only a few ounces of gear oil use API rated GL 4 or GL 5 gear oil having a viscosity of SAE 140 SAE 85W 140 or SAE 80W 90 If refilling an empty transmission use only GL 4 gear oil having a viscosity of SAE 85W 140 or SAE 140 IMPORTANT Do not use automatic transmission fluid or motor oil in the transmission 7 While checking frequently to avoid overfilling slowly add gear oil into the oil fill hole until
98. on Couvercle 5 1916641 Front Cover Transmisison Couvercle 6 GW 50032 Gasket Housing Cover Joint 7 721 04030 Oil Seal Drive Shaft Joint d tanch it d huile 8 721 04031 Oil Seal Wheel Shaft Joint d tanch it d huile 9 619 04013 Transmission Hsg Ass y Carter de la transmission 10 721 04036 Oil Seal Tine Shaft Joint d tanch it d huile 11 736 3008 Flat Washer 344 x 750 x 120 Rondelle plate 0 344 x 0 750 x 0 120 12 718 04008 Rear Bearing Cup Bague de roulement 13 710 04048 Hex Hd Flg Scr 5 16 18 x 1 Vis hex embase 5 16 18 x 1 0 14 710 3008 Hex Hd Flg Scr 5 16 18 x 75 Vis hex embase 5 16 18 x 0 75 21A 6433 Included with transmission when purchase 03 09 06 as an assembly only Remove and discard when installing the transmission on tiller MODELS MODELES 643C 643B amp 645A DESCRIPTION 2 1909950 Snap Ring Jonc d arr t 3 GW 1166 1 Shim 062 Thick Cale 0 062 GW 1166 2 Shim 030 Thick Cale 0 030 GW 1166 3 Shim 015 Thick Cale 0 015 GW 1166 4 Shim 010 Thick Cale 0 010 GW 1166 5 Shim 005 Thick Cale 0 005 4 GW 1086 Bushing Coussinet 5 711 04512 Wheel Shaft A Arbre de roue A 711 04092 Wheel Shaft B Arbre de roue B 6 GW 9305 Hi Pro Key 1 4 x 1 Cl 1 4 x 1 0 f GW 1132 2 Spacer Entretoise 8 717 04380 Worm Gear Wheel Shaft Engrenage arbre de roue 9 711 04078 Tiller Shaft Arbre 10 GW 1104 Woodruff Key Cl 11 717
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100. os q ap seo ua Mes suolll suo p a snoa snou Jo sonbsi sap 1ejuesaJd jusanad ln lu A un suep sn lin o oul np juawabseyoep 9 1o juoueDueuo 97 ININISSILHIAY uesins eoedse un nb isure ode np in bie ej mod eoedso p jueuiuesuyns za ongid 6 4 14 110 1eulq S op enjeuued mod sDBuei se aque eoejd ep juaw WBSIJNS Jassie ap ejyjeuued uomeoijiuejd euuog aun abeulg 9 4 814 El JIOA najjnsojou np ep enb un e sjueains sabessed s z n H sind inaynaojou np eun p abessed salad aj zeuoneneuo nefue e ep sues l suep sind Jnanbuo e sues e suep J9 e eJ sed juejeuued eu uIpiel np suoisuawip 59 IS S L U xne n no s hnpuo uoud l no sonb1119919 sajqeo ep e sed ZoJ I amp Ae4 N ojoudoJd INS Salag So qeo ap sed e Au inb Jainsse snoa nod saine uoud l ap eiubeduioo ej sane y0e U09 zeuaJd 405 SL e Jasuannd anod sajressaoeu juounod seBessed nenb no son 9 s91 9119 eun suep eDessed enbeuo 1euone euo 1851 ue 5181 199 sinej reu ep zeJpuergo sno Z Y BIA e e euiuoo eirenoip uadiad eBessed awalxnap un zenyooja 9 Du El JIOA JNS N90jou np eun p sjueains soDessed s l zeuoneneuo sind fuel jerueJd 115 s10 xnap zessed siues sep Jasedaid noq Z t big 9 big sis sap uolj
101. ought if a problem exists Engine fails to start 6 Trouble Shooting Engine runs erratic For repairs beyond the minor adjust ments listed here contact an authorized service dealer Engine overheats Tines do no engage 1 Spark plug wire disconnected 2 Fuel tank empty or stale fuel Throttle control lever not in correct starting position if equipped Choke not in ON position Blocked fuel line Faulty spark plug Engine flooding Spark plug wire loose Unit running on CHOKE 3 Blocked fuel line or stale fuel Gas cap vent plugged 5 Water or dirt in fuel system Dirty air cleaner Carburetor out of adjustment Engine oil level low Dirty air filter 3 Air flow restricted 4 Carburetor not adjusted properly Foreign object lodged in tines Tine clevis pin s missing Belt worn and or stretched Pulley and idler not in correct adjust ment Connect wire to spark plug Fill tank with clean fresh gasoline Move throttle lever to start position Move lever to ON position Clean fuel line Clean adjust gap or replace Referto the engine manual packed with your unit Connect and tighten spark plug wire Move choke lever to OFF Clean fuel line fill tank with clean fresh gasoline Clear vent Drain fuel tank and carburetor Refill with fresh fuel Refer to the engine manual packed with yo
102. parts from damage caused by overspeeding Do not tamper with the engine governor settings OFF SEASON STORAGE When the tiller won t be used for an extended period prepare it for storage as follows 1 Clean the tiller and engine 2 Do routine tiller lubrication and check for loose parts and hardware 3 Protect the engine and perform recommended engine maintenance by following the storage instructions found in the Engine Owner s Manual Be sure to protect the fuel lines carburetor and fuel tank from gum deposits by removing fuel or by treating fuel with a fuel stabilizer follow engine manufacturer s recommendations 4 Store unit in a clean dry area 5 Never store the tiller with fuel in the fuel tank in an enclosed area where gas fumes could reach an open flame or spark or where ignition sources are present space heaters hot water heaters furnaces etc 21 Maintenance WARNING Loading and unload ing the tiller into a vehicle is potentially hazardous and we don t recommend doing so unless absolutely necessary as this could result in personal injury or property damage However if you must load or unload the tiller follow the guidelines given next Operators shall not tamper with the engine governor set tings on the machine the governor controls the maximum safe operating speed to protect the engine and all moving parts from damage caused by overspeed Autho rized service shall be s
103. ply its parking brake When going up ramps stand in the normal operating position and push the tiller ahead of you Have a person at each side to turn the wheels When going down ramps walk backward with the til ler following you Keep alert for any obstacles behind you Position a person at each wheel to control the speed of the tiller Never go down ramps tiller first as the tiller could tip forward Place wooden blocks on the downhill side of the wheels if you need to stop the tiller from rolling down the ramp Also use the blocks to temporarily keep the tiller in place on the ramps if necessary and to chock the wheels in place after the tiller is in the vehicle After loading the tiller prevent it from rolling by engaging the wheels in the WHEEL DRIVE position Chock the wheels with blocks and securely tie the tiller down To create a terrace start at the top of the slope and work down Go back and forth across the first row as shown in Fig 4 10 Each succeeding lower terrace is started by walking below the terrace you re preparing For added stability of the tiller always keep the uphill wheel in the soft newly tilled soil Do not till the last 12 or more of the downhill outside edge of each terrace This untilled strip helps prevents the terraces from TERRACE GARDENING To create a terrace start at the top of the slope and work down Go back and forth across the first row as shown in Figure 4 10 Ea
104. r inside where there is an open flame spark or pilot light such as a water heater furnace clothes dryer etc Always refer to the operator s manual for proper instructions on off season storage If the fuel tank has to be drained do this outdoors Observe proper disposal laws and regulations for gas oil etc to protect the environment PLACE MODEL PLATE HERE FAST SLOW STOP Operating Symbols Various symbols shown here with word descriptions 4 may be used on the tiller and engine CHOKE CHOKE NOTE Yourunitmay not haveallofthesymbols ON OFF 4 m D gt lt x TILLER DIRECTION REVERSE n ROTATING TINES lt gt LEVER DIRECTION FR BAIL BAIL ENGAGED DISENGAGED WARNING To prevent personal injury or property damage do not start the engine until all assembly steps are complete and you have read and understand the safety and operating instructions in this manual INTRODUCTION Carefully follow these assembly steps to correctly prepare your tiller for use It is recommended that you read this Section in its entirety before beginning assembly NOTE Various tiller models are presented in this manual Use only the information appropriate for your tiller model Engine styles vary by model Your engine may appear differently than those illustrated in this manual TOOLS MATERIALS NEEDED 2 1 2 open end wrench 1 Block of wood to support tiller when removing 2
105. ry or property damage Travel Position F Deep Shallow Settings Settings WARNING Be sure no one other than the operator is standing near the tiller while starting engine or operating the unit Never run engine indoors or in enclosed poorly ventilated areas Engine exhaust contains carbon monoxide an odorless and deadly gas Keep hands feet hair and loose clothing away from any moving parts on engine and tiller A Figure 3 5 Depth Regulator Lever G Figure 3 6 Handlebar height adjustment See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine 11 Operating Your Tiller WARNING The tine clutch control is a safety device Never attempt to bypass its operation Use extreme care when handling gasoline Gasoline is extremely flammable and the vapors are explosive Never fuel the machine indoors or while the engine is hot or running Extinguish cigarettes cigars pipes and other sources of ignition Keep hands and feet away from the tines Refer to warning label on the unit WARNING Before operating your machine carefully read and under stand all safety Section 1 controls Section 3 and operating instruc tions Section 4 in this Manual the separate Engine Owner s Manual and on the decals on the machine Failure to follow these instructions can result in serious personal injury INTRODUCTION Read th
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109. tines have a self clearing action which eliminates most tangling of debris in the tines Hovvever occasion ally dry grass stringy stalks or tough vines may become tangled Follow these procedures to help avoid tangling and to clean the tines if necessary To reduce tangling set the depth regulator deep enough to get maximum chopping action as the tines chop the material against the ground Also try to till under crop residues or cover crops while they are green moist and tender While tilling try swaying the handlebars from side to side about 6 to 12 This fishtailing action often clears the tines of debris f tangling occurs lift the tines out of the soil and run the tiller in reverse if unit is equipped with powered reverse for a few feet This reversing action should unwind a good deal of debris t may be necessary to remove the debris by hand a pocket knife will help you to cut away the material Be sure to stop the engine and disconnect the spark plug wire before clearing the tines by hand 15 Operating Your Tiller WARNING Before clearing the tines by hand stop the engine allow all mov ing parts to stop and disconnect the spark plug wire Remove the ignition key on electric start models Failure to follow this warning could result in personal injury Loading and unloading the tiller into a vehicle is potentially hazard ous and we don t recommend doing s
110. top the wheels and tines release the Forward Clutch Bail all models or the Reverse Clutch Control Models 643B amp 645A whichever control is in use SACER Ine 2 To stop the engine put the ignition switch and or the Figure 4 3 Raise tines off ground and look behind when throttle control lever in the OFF or STOP position moving in reverse OPERATING THE TILLER The following operating instructions provide guidelines to using your tiller effectively and safely Be sure to read Tilling Tips amp Techniques in this Section before actually putting the tines into the soil b When tilling relax and let the wheels pull the unit while the tines dig Walk behind and a little to one side of the unit Use one hand yet keep a light but secure grip on the handlebar while keeping your arm loose See Fig 4 2 Let the unit move at its own pace and do not push down on the handlebars to try and force the tines to dig deeper this takes weight off the wheels and reduces traction WARNING Do not push down on the handlebars to try to make the tiller till more deeply This prevents the wheels from holding the tiller back and can allow the tines to rapidly propel the tiller forward which could result in This is a Counter Rotating Tine CRT tiller It operates differently from Standard Rotating Tine SRT tillers As the wheels pull forward the tines rotate backward creating an uppercut action
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115. ue to run DEPTH REGULATOR LEVER This lever F Figure 3 5 controls the tilling depth of the tines Pull the lever back and slide it up or down to engage the notched height settings The travel position highest notch raises the tines approximately 1 1 2 off the ground allowing the tiller to be moved without the tines contacting the ground This setting should also be used when starting the engine 10 Moving the lever upward will increase the tilling depth HANDLEBAR HEIGHT ADJUSTMENT The lowest notch allows a tilling depth of approximately 6 depending on soil conditions For best results always begin tilling at a very shallow depth setting and gradually increase the tilling depth The handlebar height is adjustable to three different settings Figure 3 6 In general adjust the handlebars so they are at waist level when the tines are 3 4 in the soil WARNING Do not attempt to till too To adjust the handlebars deeply too quickly Gradually work down to deeper tilling depths 1 Stop engine disconnect spark plug wire from spark Featu res Place the Depth Regulator Lever in plug and allow engine to cool di the travel position before starting 2 Remove hardware reposition handlebars and an the engine This position prevents the reinstall hardware securely C o ntr o S tines from touching the ground until you are ready to begin tilling Failure to follow this warning could result in personal inju
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120. uoyonog zassinag LL Z Bu ep apin6 np abej6bay 01 2 Du O J 33 91qe2 ayoeye un dane aserd Zauajuleyy Laag ej ap abeAesquia p lqp np juawaulwayoy 6 z 614 n youl np uonesijnn p eonou e suep Seluno Ssuononjjsul saj uojes JNSjou e ajiny Zajnoly neau ap ueiq yos Jnejou anb eo e nbsnl 01 z Du 44 JnopuojoJd ap apinB np ej zassreqe no zan ai 19 auejd eoeuns eun ins jnaynoojoui 9 2904 z SINN e ejnu p eupenb e je eyyuenb e zueu 190U00 5 1 saj sno nod juawaiedas eiu1noj inajow np uonesilin p eonou ej zeynsuo2 naow l Jobewuopus p zenbsu snoa Jed e ajiny p uiad aj We JIoAe p uere Jnajow 9 Jallewap sed sagt N NYLHOdiN n9 0UJ linu p l ld l sues eipedxe aja e nejnoojoul 97 unaloN VINHA NI3 3dV13 4411445 CG aulideyo a suep uolis SILWSUEJ EI ep ejinu p NESAIU np uomneorug nj JOAL Seide am ap zejnofe seq dou 199 neewu 9 IS p Jediouud uoissiusueJ ep auque ep in ineu iui SALUE JINY IS 1981109 159 e inu p NESAIU 87 E ejoeiiqeu suep ediouud uoissiusueJ ep lQ E I Zesi e90 19 UoISSIUSUEJ e ajpejiqeu ap 4 2 D 00 aliny p r is np uogonoq aj zessieq Z SSEQ snjd e euoooue suep 1euouejoue nod 01 Z Bly 44 Jnepuojoud ep apin6 np eeuDiod ej zanajai euejd eoejins eun ins Jnajjnoojow l 299814 UO
121. ur unit Referto the engine manual packed with your unit Fill crankcase with proper oil Refer to the engine manual packed with your unit Remove blower housing and clean Refer to the engine manual packed with your unit Stop tiller completely check and discard foreign object Replace tine clevis pin s Replace belt Take unit to authorized service TROY BILT TILLER LIFETIME LIMITED WARRANTY WHAT PRODUCT All Troy Bilt branded rear tine walk behind tillers with gear drive transmissions This IS COVERED warranty begins on the date of purchase and is warranted by Troy Bilt LLC for the life of the tiller to the original purchaser only WHAT IS COVERED Troy Bilt LLC will at its option repair or replace any part found to be defective in BY THIS WARRANTY material or workmanship without charge for parts and labor Warranty This limited lifetime warranty also applies to non powered attachments and acces sories Powered attachments and accessories are warranted separately by their manufacturers Refer to the applicable manufacturer s warranty on these items for terms and conditions WHAT IS NOT This warranty does not apply to parts that have been damaged by accident altera COVERED BY THIS tion misuse abuse neglect improper maintenance vandalism theft fire water WARRANTY or damage because of peril or other natural disaster The following items are not covered after the first year of this
122. which digs deeply uproot ing soil and weeds 1 Follow the Pre Start Checklist at the beginning of this Section Be sure that the wheels are in the WHEEL DRIVE position 2 Move the Depth Regulator Lever all the way down so that the tines clear the ground Use this position when loss of control property damage or practicing with the tiller and when traveling between personal injury tilling sites Before actually tilling move the lever to the 5 For reverse motion of the wheels and tines Models desired depth setting see Tilling Tips amp Techniques 643B amp 645A only 3 Start engine and allow it to warm up Then put throttle a Look behind and exercise caution when operating in FAST setting in reverse Do not till while in reverse 4 For forward motion of the wheels and power to the b Stop all forward motion Lift handlebar with one tines hand until tines are off the ground and then a Pull Forward Clutch Bail Fig 4 1 up against pull Reverse Clutch Control knob out see Fig handlebar Release bail to stop forward motion of 4 3 To stop reversing let go of Reverse Clutch wheels and tines Control knob 6 To move the Model 643C in reverse for short distances a Release forward Clutch Bail Then lift handlebar until tines are off the ground 13 Operating Your Tiller WARNING Be sure no one other than the operator is standing near the tiller while starting engine or operating the unit Never run engine i
123. will go The wheel should now spin freely freewheel on the wheel shaft Repeat with the other wheel 4 Use the handlebar to roll the tiller to a flat area STEP 4 INSTALL FORWARD CLUTCH CABLE 1 Carefully unwrap the forward clutch cable cable without an attached knob from its shipping position and slide the thin cable wire M Fig 2 4 into the slot in the cable bracket Push the cable connector N Fig 2 4 up through the hole in the bracket until the groove in the connector snaps into place 2 Thread the 10 24 hex nut Z Fig 2 5 halfway onto the screw V which runs through the spring W Fig 2 5 3 Thread the screw V into the cable adjuster X 4 Check for correct tension on the forward drive belt by taking two measurements of the cable spring as follows a With the Forward Clutch Bail Y Fig 2 6 in an open released position measure the length of the cable spring W from the outermost coil to the outermost coil Assembly Fig 2 4 Installing forward clutch cable bracket and cable NOTE Incorrect cable tension can result in belt slippage cable tension too loose or unintentional tine movement when the clutch bail is in Neutral cable tension too tight Hold bail against handlebar while taking second measurement of spring Fig 2 7 To check forward belt tension take two measure ments of the length of the coils in the spring first with the bail open then wit
124. wner s Manual for engine cleaning service intervals and instructions Be sure that the muffler is cool before servicing the engine AIR CLEANER SERVICE The air cleaner filters dirt and dust out of the air before it enters the carburetor Operating the engine with a dirty clogged air filter can cause poor performance and damage to the engine Never operate the engine without the air cleaner installed Inspect and service the air cleaner more often if operating in very dusty or dirty conditions Refer to the engine Owner s Manual for air cleaner service intervals and instructions ENGINE OIL SERVICE Check the engine oil level before each use and after every five hours of continuous operation Running the engine when it is low on oil will quickly ruin the engine It is recommended that you change the motor oil after every 10 hours of operation and even sooner when operating in extremely dirty or dusty conditions Refer to the Engine Owner s Manual for detailed service instructions A To Check the Engine Oil Level 1 Park the tiller on a level area and shut off the engine 2 Level the engine use the Depth Regulator Lever to adjust the engine angle 3 Clean around the oil dipstick or oil fill tube which ever applies to prevent dirt from falling into the crankcase 4 On engines with an oil fill tube remove the fill cap and add oil if required until it reaches the top of the fill tube Reinstall the fill cap
125. x 6 B C Ensemble de roue comp 13 x 5 x 6 B C 634 04218 Rim Assembly B C Jante B C 734 04163 Tire B C Pneu B C 734 0255 Air Valve Soupape air 49 714 04048 Cotter Pin Goupille fendue 50 711 04126 Clevis Pin Axe de chape A For Model 643C Pour modele 643C B For Model 643B Pour mod le 643B C For Model 645A Pour mod le 645A 29 21A 6435 11 20 06 Parts List Pieces d tach es For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires For parts and or accessories refer to customer support on page 2 Adressez vous au Service apres vente a la page 2 pour ce qui concerne les pieces et ou accessoires S HOSS 228 no s ld s l 9UJ99U09 inb 1nod z abed ej e ojuaA soJde 991A19S ne sno zessaJpy z obed uo Hoddns Jewojsno 0 50110559226 Jo pue syed 104 Sc DEN epeueg ouejuo iauayoyy enueAy 1U8y 26 9861 XOg d e no euooJd end ej 399162 anbiuyde uoneis e e sno zessoJpe ajuan saide 01 UN nod suonoipun s uojas juatea inb spop s nne p jarojeueq zeAnod snoa je s nbiy ds senbipunf siloip sep epioooe sno eau enueieb n UOHET S SUJOA Supp Jonbijdde s sed eu jueAned snssap 19 50011011159 no suorsnjoxe s l 3uenbesuoo Jeg euejeD e ep aainp e e ejui eun no sjallajewuwi no
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