Troubleshooting - Troy-Bilt TUFFY 643B Operator's Manual

PROBLEM
Enginedoes not start
Engine runspoorly.
Engine overheats.
Engine doesnotshotoff
Wheels andTineswill notturn
Tines turn,butwheels don't,
Wheels Turn,butTinesDon't,
Poor tilling performance.
WARNING:
Beforeinspecting, 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. Failureto follow these instructions can result in serious personal injury or property
damage.
TROUBLESHOOTING
POSSIBLECAUSE
1. Spark plug wire disconnected.
2. Engine Throttle Control Lever incorrectly set.
3. Fueltank empty.
4. Choke control (if so equipped) in incorrect position.
5. Stale gasoline.
6. Dirty airfilter.
7. Defective or incorrectly gapped spark plug.
8. Carburetor out of adjustment.
9. Misadjusted throttle control.
10. Dirt or water in fuel tank.
1. Defective or incorrectly gapped spark plug.
2. Dirty airfilter(s).
3. Carburetor out of adjustment.
4. Stale gasoline.
5. Dirt or water in fuel tank.
6. Engine cooling system clogged.
1. Engine cooling system clogged.
2. Carburetor out of adjustment.
3. Oil level is low.
1. Misadjusted throttle control or ignition switch.
1. Improper use of controls.
2. Worn, broken, or misadjusted drive belt(s).
3. Internal transmission wear or damage.
4. Bolt loose in transmission pulley.
1. Wheel Drive Pins not in WHEEL DRIVE.
2. Bolt loose in transmission pulley.
3. Internal transmission wear or damage.
1. Tine holder mounting hardware missing.
2. Bolt loose in transmission pulley.
3. Internal transmission wear or damage.
1. Worn tines.
2. Improper Depth Regulator setting.
3. Incorrectthrottle setting.
4. Forward Drive Belt slipping.
CORRECTION
Reconnectwire.
2. Put lever in STARTposition.
3. Add fuel.
4. See Engine Owner's Manual.
5. Drain fuel and add fresh fuel.
6. Clean or replace filter.
7. Inspect spark plug.
8. See Engine Service Dealer.
9. See Engine Service Dealer
10. See Engine Service Dealer.
Inspect spark plug (see Engine Owner's Manual).
2. Clean or replace (see Engine Owner's Manual).
3. See Engine Service Dealer.
4. Replacewith fresh gasoline.
5. See Engine Service Dealer.
6. Clean air cooling system (see Engine Owner's Manual).
Clean air cooling area (see Engine Owner's Manual).
2. See Engine Service Dealer.
3. Check oil level (see Engine Owner's Manual).
1. See Engine Owner's Manual or Engine Service Dealer.
1. Review Sections 3 and 4.
2. See "Checking Drive Belt Tension," Section 5.
3. Contact local dealer or the factory.
4. Tighten bolt.
1. See "Wheel Drive Pins" in Section 3.
2. Tighten bolt.
3. Contact local Dealer or the Factory.
1. Replacehardware.
2. Tighten bolt.
3. Contact local Dealer or the Factory.
1. See "Bolo Tines" (Section 5).
2. See "Tilling Tips & Techniques," Section 4.
3. See Section 4.
4. See "Checking Forward Drive Belt Tension," Section 5.
22