Troy-Bilt 643C Tuffy Operator's Manual
Rear-tine tiller
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- Operator's manual (36 pages)
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Model 645A Shown
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-
covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if
any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required
by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark
arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131
Cleveland, Ohio 44136-0019.
PRINTED IN U.S.A.
Operator's Manual
Troy-Bilt LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Rear-tine Tiller Models
643C , 643D Tuffy
643B, 645A Super Bronco
®
/ Bronco CRT
TM
FORM NO.
769-02357A.fm
10/27/06
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Table of Contents
Related Manuals for Troy-Bilt 643C Tuffy
Summary of Contents for Troy-Bilt 643C Tuffy
- Page 1 (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019. Troy-Bilt LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 PRINTED IN U.S.A. FORM NO.
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Page 2: Customer Support
Choose from the options below: Visit troy-bilt.com for many useful suggestions. Click on Customer Support button and you will get the four options reproduced here. Click on the appropriate button and help is immediately available. -
Page 3: Section 1: Safety
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. Forward Clutch Bail Reverse Clutch Control (Models 643B & 645A) WARNING Depth Regulator The engine exhaust from this product contains... -
Page 4: Maintenance And Storage
5. If the unit should start to vibrate abnor- If in doubt about the tilling conditions, al- 24. Do not touch engine parts which may mally, stop the engine, disconnect the ways use the following operating precau- be hot from operation. Let parts cool down spark plug wire and prevent it from touch- tions to assist you in maintaining control sufficiently. - Page 5 Decals Reverse Clutch Control Forward Clutch Bail For your safety and the safety of others, vari- Operating Instruction (Models 643B & 645A) ous safety and operational decals are located on your unit (see Figure 1-2). Keep the decals clean and legible at all times. Starting Stabilization Contact your local service dealer or the factory Message (on engine)
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Page 6: Section 2: Assembly
Loosely attach the support brackets to Hex hd. screw, 3/8-16 x 3/4" Contact Troy-Bilt LLC if you need assis- the outside of the handlebar assembly (I) Flat Washer, 3/8" tance in this matter. -
Page 7: Step 4: Install Forward Clutch Cable
The support brackets must 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. - Page 8 4. Test the function of the reverse clutch by pulling out and releasing the cable knob. The knob should return to its neutral posi- tion (resting against bracket). If it doesn’t, contact your local dealer or Troy-Bilt LLC for technical assistance. Fig. 2-5: Cable Fig. 2-6: Attach forward...
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Page 9: Step 6: Check Transmission Oil Level
STEP 6: CHECK TRANSMISSION STEP 7: ADD MOTOR OIL STEP 8: CHECK HARDWARE OIL LEVEL The tiller is shipped without oil in the en- Check all nuts and screws for tightness. gine. The transmission was filled with gear oil at STEP 9: CHECK AIR PRESSURE IN the factory. -
Page 10: Section 3: Features And Controls
SECTION 3: FEATURES AND CONTROLS WARNING: Before operating your machine, carefully read and understand all safety, controls and operating instructions in this Manual, the separate Engine Forward Clutch Bail Reverse Clutch Control Owner’s Manual, and on the (Models 643B & 645A) decals on the machine. -
Page 11: Forward Clutch Bail
begin tilling at a very shallow depth setting WARNING: Use extreme and gradually increase the tilling depth. caution when reversing or pulling the machine towards WARNING: Do not attempt you. Look behind to avoid to till too deeply too quickly. obstacles. -
Page 12: Starting And Stopping
SECTION 4: OPERATION WARNING: 1. Complete the Pre-Start Checklist on this Before Reverse Clutch Control page. operating your machine, (Models 643B & 645A) carefully read and understand 2. Put the wheels in the WHEEL DRIVE po- all safety (Section 1), controls sition (see Wheel Drive Pins in Section 3 of (Section 3) and operating this manual). -
Page 13: Operating The Tiller
3. Start engine and allow it to warm up. (b) Swing the handlebar to the left so the Then put throttle in “FAST” setting. right wheel takes a “step” backward. Next swing the handlebar to the right so the left 4. -
Page 14: Tilling Tips & Techniques
TILLING TIPS & TECHNIQUES Tilling Depths • This is a CRT (counter-rotating tine) tiller. As the wheels pull forward, the tines rotate back- ward. 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 WARNING: Before wheels may tend to spin in the soft dirt. - Page 15 TILLING TIPS & TECHNIQUES (CON’T) Tilling On Slopes Read the following recommendations before tilling on slopes: WARNING: Do not If you must garden on a moderate slope, please follow two very important guidelines: operate tiller on a slope too steep for safe operation. Till 1.
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Page 16: Loading And Unloading The Tiller
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 preparing. -
Page 17: Transmission Gear Oil Service
SECTION 5: MAINTENANCE WARNING: TILLER LUBRICATION If a cover is leaking, check for loose Before screws. If the screws are tight, a new inspecting, cleaning or servicing After every 10 operating hours, oil or gasket or oil seal may be required. the machine, shut off engine, grease the lubrication points shown in wait for all moving parts to come... -
Page 18: Bolo Tines
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. -
Page 19: Checking And Adjusting Forward Drive Belt Tension
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. -
Page 20: Forward Clutch Bail Adjustment
The procedure requires average sion). If this fails to correct the problem, ing and tighten the outer jam nut (D) mechanical ability and commonly available contact Troy-Bilt LLC or your authorized against the bracket. Prevent the outer jam tools. dealer for service advice. -
Page 21: Spark Plug Service
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. -
Page 22: Troubleshooting
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. - Page 23 NOTES...
- Page 24 MODELS 643B, 643C, 643D & 645A...
- Page 25 MODELS 643B, 643C, 643D & 645A PART NO. DESCRIPTION PART NO. DESCRIPTION 686-04076 Tine Hood Assembly (A) 732-04185 Spring, Forward Clutch 686-04077 Tine Hood Assembly (B) (C) 746-04208 Cable Assembly, Forward Clutch 710-0395 Hex Screw, 5/16-18 x 2.25 746-04058 Cable Assembly, Reverse Clutch (B) (C) 710-0597 Hex Hd.
- Page 26 MODELS 643B, 643C, 643D & 645A PART NO. DESCRIPTION GW-9517 Snap Ring GW-1714 Bearing, Tapered Roller (with race) GW-50043 Support Washer, Rear 711-04110 Drive Shaft GW-1224-1* Shim, Rear Bearing Cap, .010" thick GW-1224-2* Shim, same as above, except .030" thick GW-1224-3* Shim, same as above, except .005"...
- Page 27 MODELS 643B, 643C, 643D & 645A FRONT PART NO. DESCRIPTION 1909950 Retainer, Snap Ring GW-1166-1* Shim, 0.062" thick GW-1166-2* Shim, 0.030" thick GW-1166-3* Shim, 0.015" thick GW-1166-4* Shim, 0.010" thick GW-1166-5* Shim, 0.005" thick GW-1086 Bronze Bushing 711-04512 Wheel Shaft (A) 711-04092 Wheel Shaft (B) 711-04486...
- Page 28 MODELS 643B, 643C, 643D & 645A MODEL 643C MODEL 643B & 643D...
- Page 29 MODELS 643B, 643C, 643D & 645A PART NO. DESCRIPTION PART NO. DESCRIPTION 736-0159 Flat Washer, 5/16 736-0452 Bell Washer 710-0459A Hex Hd. Screw, 3/8-24 x 1.50, GR5 756-04198 Pulley, Engine Drive 736-04181 Support Washer 656-04023 Transmission Pulley (A) 732-04085 Forward Return Spring 656-04005 Transmission Pulley (B) (C) 786-04107...
- Page 30 NOTES...
- Page 31 NOTES...
- Page 32 The provisions set forth in this warranty provide the sole and exclusive remedy arising from the sale. Troy-Bilt LLC shall 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.