Troy-Bilt TUFFY 643B manual

O mm 'w//////al&_,411111111111111F / m mllllllllllllllllml m Operator's Manual ® Rear-tine Tiller Models 643C m Tuffy ¢ / Bronco CRT 643B, 645A -- Super BroncoTM Mode1645A Shown IMPORTANT: Read safety rules and instructions carefully before operating equipment. Warning: This unit is equipped with an internal combustion engine and sh[...]

TABLE OF CONTENTS Content Page Content Page Customer Support 2 Maintenance 17 Safety 3 Off-season Storage 21 Assembly 6 Troubleshooting 22 Features and Controls 10 Parts List 24 Operation 12 Warranty Back Cover FINDING MODEL NUMBER This Operator's Manual is an important part of your new tiller. It will help you assemble, prepare and maintain t[...]

SECTION 1: SAFETY This machine meets voluntary safety stan- dard B71.8-1996, which is sponsored by the Outdoor Power Equipment Institute, Inc., and is published by the American National Standards Institute. WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reprod[...]

5.If the unit should start to vibrate abnor- mally, stop the engine, disconnect the spark plug wire and prevent it from touch- ing the spark plug, and check immediately for the cause. Vibration is generally a warning oftrouble. 6.Stop the engine, disconnect the spark plug wire and prevent it from touching the spark plug, whenever you leave the oper[...]

Decals For your safety and the safety of others, vari- ous safety and operational decals are located on your unit (see Figure 1-2). Keepthe decals clean and legible at all times. Contactyour local service dealer or the factory for replacementsif any decals are damaged or missing. Referto the Parts List pages in this Manual for decal locations, desc[...]

SECTION 2: ASSEMBLY 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 readth[...]

The support bracketsmust be assembled to the outside of the handlebar assembly. Fig. 2-3: Wheel in FREEWHEEL position (wheel drive pin through wheel shaft only). STEP 4: INSTALL FORWARD CLUTCH CABLE 1. Carefully unwrap the forward clutch ca- ble (cable without an attached knob) from its shipping position and slide the thin ca- ble wire (M, Fig. 2-4[...]

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. b. Squeeze the Forward Clutch Bail against the handlebar (see Fig.[...]

5! =-P 6: CHECK TRAHSMiSSiOH 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 com- ponents. 1. With the tiller on lev[...]

SECTION 3: FEATURES AND CONTROLS _ ARNING: Before operating your machine, carefully readand understand all safety, controls and operating instructions in this Manual, the separateEngine Owner's Manual,and on the decals on the machine. Failure to follow these instructions can result in serious personal injury. INTRODUCTION This Section describe[...]

Figure 3-3: FREEWHEEL position. WARNING: Before starting engine, be sure that both wheels are in WHEELDRIVE position. See WheelsDrive Pins for instructions. Engagingthe 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[...]

SECTION 4: OPERATION _ ARNING: Before operating your machine, carefully readand understand all safety (Section 1), controls (Section 3) and operating instructions (Section 4) in this Manual, the separateEngine Owner's Manual,and on the decals on the machine. Failure to follow these instructions can result in serious personal injury. INTRODUCTI[...]

Stopping the Engine and Tiller 1. To stop the wheels and tines, release the Forward Clutch Bail (all models) orthe Re- verse Clutch Control (Models 643B & 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. OPERATING THE TILLE[...]

TILLING TIPS & TECHNIQUES Tilling Depths WAHNING: 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, telephone lines, pipes or hoses. This is a CRT (counter-rotatingtine) tiller. As the wheels pull forward, the tines rotate[...]

TILLING TIPS & TECHNIQUES (CON'T) Tilling On Slopes Read the following recommendations before tilling on slopes: If you must gardenon a moderate slope, please follow two very important guidelines: 1. Till only on moderate slopes, never on steepground where footing is difficult (review safe- ty rules in Section 1: Safety of this manual). 2.[...]

TILLING TIPS & TECHNIQUES (CON'T) Terrace Gardening(continued) • 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 0 m_ preparing. For added stability of the tiller, always kee[...]

SECTION 5: 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. Remove ignition key on electric start models. Failure to follow these instructions can result in serious personal injury or proper[...]

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. 4. The gear oil level is correct if the gear oil is approx[...]

,_ 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. C FORWARD Figure 5-3: Install tines so that cutting e[...]

,_ 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. FORWARD CLUTCH BAIL ADJUSTMENT If the Forward Clutch Ba[...]

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. 3. Clean around the oil dipstick or oil fill tube (whichev[...]

PROBLEM Engine does not start Engine runs poorly. Engine overheats. Engine does not shot off Wheels andTines will not turn Tines turn, but wheels don't, Wheels Turn, but Tines Don't, Poor tilling performance. WARNING: Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete sto[...]

NOTES 23[...]

Models643C, 643B & 645A Q 24[...]

MODELS 643C, 643B & 645A REF PART NO. NO. 1 686-04043 686-04041 2 710-0395 3 710-0597 4 710-0599 5 710-0874 6 710-3008 7 712-04063 8 712-04064 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 [...]

MODELS 643C, 643B & 645A REF NO. 1 GW-9517 2 GW-1714 3 GW-50043 4 711-04110 5 GW-1224-1 * GW-1224-2" GW-1224-3" GW-1224-4" -- GW-1325C PART NO. DESCRIPTION Snap Ring Bearing, Tapered Roller (with race) Support Washer, Rear Drive Shaft Shim, Rear Bearing Cap, .010" thick Shim, same as above, except .030" thick Shim, same[...]

MODELS 643C, 643B & 645A FRONT I 4 7 2 3 j/ (A) For Model 643C (B) For Model 643B (C) For Model 645A REF NO. 2 3 4 5 6 7 8 9 10 11 * Use as 7 4 3 2 PART NO. DESCRIPTION 1909950 GW-1166-1 * GW-1166-2" GW-1166-3" GW-1166-4" GW-1166-5" GW-1086 711-04512 711-04486 GW-9305 GW-1132-2 1904278 711-04078 GW-1104 1916542 Retainer, Sna[...]

MODELS 643C, 643B & 645A Model 643C 28[...]

MODELS 643C, 643B & 645A REF NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PART NO. 736-0159 756-04198 656-04023 656-04005 756-04169 786-04095 754-04090 754-04091 731-05268 732-04289 732-04081 732-04079 786-04068 786-04069 786-04070 748-04087 786-04276 786-04275 710-0672 710-0117 710-0237 710-0376 710-04049 710-0347 7[...]

NOTES 30[...]

NOTES 31[...]

TROY-BILT TILLER LIFETIME LIMITED WARRANTY WHAT PRODUCT IS COVERED All Troy-Bilt branded rear tine walk-behind tillers with gear drive transmissions. This 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 [...]