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Rear-tine Tiller Models

643C— Tuffy

/ Bronco CRT

643B, 645A — Super Bronco

Model 645A Shown

Operator’s Manual

PRINTED IN U.S.A. P. O. Box 1386, 97 Kent Avenue, Kitchener, Ontario N2G 4J1 772C0845

IMPORTANT: READ SAFETY
RULES AND INSTRUCTIONS
CAREFULLY

(12/05)

Содержание 643B Super Bronco

Страница 1: ...s 643C Tuffy Bronco CRT 643B 645A Super BroncoTM Model 645A Shown Operator s Manual PRINTED IN U S A P O Box 1386 97 Kent Avenue Kitchener Ontario N2G 4J1 772C0845 IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY 12 05 ...

Страница 2: ...ce 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 perfor mance power rating specifications warranty and service Please refer to the engine...

Страница 3: ...mes and sparks away from the fuel tank and fuel container d Fill fuel tank outdoors with extreme care Never fill fuel tank indoors Use a funnel or spout to prevent spillage e Replace all fuel tank and container caps securely f If fuel is spilled do not attempt to start the engine but move the ma chine away from the area of spillage and avoid creating any source of ig nition until fuel vapors have ...

Страница 4: ... clutch control is engaged Do not attempt to restrain the tiller 15 Do not overload the tiller s capacity by attempting to till too deeply at too fast a rate 16 Never operate the tiller at high trans port speeds on hard or slippery surfaces Look behind and use care when backing up 17 Do not operate the tiller on a slope that is too steep for safety When on slopes slow down and make sure you have g...

Страница 5: ... SHIELDS IN PLACE AND WORKING NEVER ALLOW CHILDREN OR UNINSTRUCTED ADULTS TO OPERATE TILLER SHUT OFF ENGINE AND DISCONNECT SPARK PLUG WIRE BEFORE MANUALLY UN CLOGGING TINES OR MAKING REPAIRS KEEP BYSTANDERS AWAY FROM MACHINE KEEP AWAY FROM ROTATING PARTS USE EXTREME CAUTION WHEN REVERSING OR PULLING THE MACHINE TOWARDS YOU Operating Symbols Varioussymbols shownhere withworddescriptions maybeusedon...

Страница 6: ...List contact your local dealer or the factory items are missing or dam aged 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 4 Hex hd screw 5 16 18 x 1 1 2 2 Hex hd screw 3 8 16 x 3 4 2 Flat Washer 3 8 4 Split lock washer 5 16 4 Hex nut 5 16 18 2 Hex locknut 3 8 ...

Страница 7: ...able without an attached knob from its shipping position and slide the thin ca ble wire M Fig 2 4 into the slot in the ca ble 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 ad just...

Страница 8: ...Fig 2 8 and Fig 2 9 from its shipping po sition and route it up to the handlebar Be sure that the cable is routed beneath the Forward Clutch Bail 2 Insert the cable CC Fig 2 8 through the slot in the cable bracket and position the flat side of the threaded assembly next to the flat side of the hole Slide the hex nut DD up the cable and tighten it securely 3 Fasten the reverse clutch cable to the l...

Страница 9: ...mage will result if the engine is run with out oil 1 Refer to the separate Engine Owner s Manual for engine oil specifications and capacities 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 En gine Owner s Manual 4 Move the Depth Regulator Lever all the way down until the highest notch is en gaged...

Страница 10: ...eel shaft causing the wheels to turn when either the Forward Clutch Bail all models or the Re verse Clutch Control Models 643B 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 freely when you manually move the tiller To place the wheel...

Страница 11: ...trol knob E Figure 3 4 out The wheels and tines will rotate in a reverse direction 4 Release the control knob to disengage stop the wheels and tines the engine will continue 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 ...

Страница 12: ... the directions 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 an...

Страница 13: ...n 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 loss of control property damage or personal injury 5 For reverse motion of the wheels and tines Models 643B 645A only a Look behind and exercise caution when operating in reverse Do not till while in rev...

Страница 14: ...hrottle 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...

Страница 15: ... debris It 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 WARNING Before clearing the tines by hand stop the engine allow all moving parts to stop and disconnect the spark plug wire Remove the ignition key on electric start models Failure to follow th...

Страница 16: ...wo 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 pro vide 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 slippin...

Страница 17: ...f 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 and w...

Страница 18: ...of the transmission 6 Reinstall the wheel 7 Install a new gasket do not reuse old gasket and reinstall the transmission cov er 8 Refill the transmission using GL 4 gear oil SAE 85W 140 or SAE 140 9 Refill the engine with motor oil and re plenish the fuel tank with gasoline BOLO TINES The bolo tines will wear with use and should be inspected at the beginning of each tilling season and after every 3...

Страница 19: ...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 lo cated inside the spring clockwise viewed from operator s position to increase ten sion on the spring Turn the screw counter clockwise to decrease tension Once adjusted reattach the spring to the For ward Clutch Bail e RepeatSteps2and3tore measurethe ...

Страница 20: ...st the bracket 7 Measure the gap by repeating Step 3 Readjust as needed by repeating Steps 5 and 6 8 Reinstall the belt cover 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 satis factorily The procedure requires ave...

Страница 21: ...gs on the machine the governor controls the maximum safe operating speed to protect the engine and all moving parts from damage caused by overspeed Authorized service shall be sought if a problem exists CARBURETOR GOVERNOR CONTROL ADJUSTMENTS The carburetor was adjusted at the factory for best operating speed Refer to the En gine Owner s Manual for any adjustment information or see your authorized...

Страница 22: ... oil level see Engine Owner s Manual Engine does not shut off 1 Misadjusted throttle control or ignition switch 1 See Engine Owner s Manual or Engine Service Dealer Wheels and Tines will not turn 1 Improper use of controls 1 Review Sections 3 and 4 2 Worn broken or misadjusted drive belt s 2 See Checking Drive Belt Tension Section 5 3 Internal transmission wear or damage 3 Contact local dealer or ...

Страница 23: ...23 NOTES ...

Страница 24: ...24 A A 11 43 45 48 42 39 6 24 49 47 39 9 14 10 44 13 5 7 7 19 9 3 20 21 2 12 18 46 7 30 26 6 17 7 8 15 37 38 35 29 34 36 27 23 25 28 24 40 4 16 22 33 32 31 1 4 41 4 Models 643C 643B 645A ...

Страница 25: ... 16 18 25 712 0121 Hex Nut 10 24 26 712 0291 Hex Lock Nut 1 4 20 27 732 04185 Spring Forward Clutch 28 746 04208 Cable Assembly Forward Clutch 29 746 04058 Cable Assembly Reverse Clutch B C 30 747 04210 Bail Forward Clutch 31 749 04084 Upper Handlebar 32 749 04208 Lower Handlebar 33 749 04106 Tab Conduit Mount 34 732 04040 Bracket Reverse Clutch Cable B C 35 786 04188 Handlebar Support 36 786 0420...

Страница 26: ...2 1 5 4 6 6 8 8 9 10 10 12 3 14 13 11 7 Included with transmission when purchased as an assembly only Remove and discard when installing the transmission on tiller REF NO PART NO DESCRIPTION 1 GW 9727 Plug Transmission Oil Fill 2 710 04049 Hex Hd Flange Screw 5 16 18 x 5 8 Gr 5 3 736 0119 Lock Washer 5 16 4 1918377 Rear Cover Transmission 5 1916641 Front Cover Transmission 6 GW 50032 Gasket Housin...

Страница 27: ... 1166 3 Shim 0 015 thick GW 1166 4 Shim 0 010 thick GW 1166 5 Shim 0 005 thick 4 GW 1086 Bronze Bushing 5 711 04512 Wheel Shaft A 711 04486 Wheel Shaft B C 6 GW 9305 Key Hi Pro 1 4 x 1 7 GW 1132 2 Spacer 8 1904278 Worm Gear Wheel Shaft 9 711 04078 Tiller Shaft 10 GW 1104 Woodruff Key 11 1916542 Worm Gear Tiller Shaft 2 3 4 7 7 4 3 2 FRONT 9 5 6 10 11 8 A For Model 643C B For Model 643B C For Model...

Страница 28: ...17 15 27 20 47 23 29 8 37 17 32 27 15 20 6 26 1 10 1 4 16 18 43 11 15 9 37 24 38 3 44 19 27 14 13 40 45 12 46 34 21 48 44 23 5 23 39 48 99 36 32 6 3 44 33 28 35 31 2 26 33 28 35 22 31 30 7 2 42 36 42 18 43 11 41 38 30 A A Model 643C ...

Страница 29: ...f Tapping 1 4 20 x 1 2 24 710 3103 Hex Hd Screw 5 16 18 x 2 B C 25 712 3000 Lock Nut 3 8 16 26 712 3009 Lock Nut 5 16 18 B C 27 736 0119 Lock Washer 5 16 A 28 750 0535 Spacer 380 ID x 625 OD x 21 A 736 3050 Flat Washer 406 x 812 x 051 B C 29 736 3090 Flat Washer 30 736 0452 Bell Washer 31 710 0459A Hex Hd Screw 3 8 24 x 1 50 GR5 32 736 04181 Support Washer 33 732 04085 Forward Return Spring 34 786...

Страница 30: ...30 NOTES ...

Страница 31: ...31 NOTES ...

Страница 32: ... commercial institutional industrial rental or demonstrator purposes the warranty COMMERCIAL 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 alteration misuse abuse neglect improper maintenance vandalism theft fire water or damage because of peril or other natural disaster HOW TO OBTAIN ...

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