Troy-Bilt 644A, 640C manual Troubleshooting, Problem, Correction, Enginedoes not start

Models: 640C 644A

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TROUBLESHOOTING

moving partsto come to a complete stop, disconnectspark plug wire and move wire awayfrom WARNING: Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all

spark plug. Failureto follow these instructions can result in serious personal injury or property damage.

TROUBLESHOOTING

PROBLEM

 

POSSIBLECAUSE

Enginedoes not start

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 air filter.

 

7.

Defective or incorrectly gapped spark plug.

 

8.

Carburetor out of adjustment.

 

9.

Misadjusted throttle control.

 

10.

Dirt or water in fuel tank.

Enginerunspoorly.

1.

Defective or incorrectly gapped spark plug.

 

2.

Dirty air filter(s).

 

3.

Carburetor out of adjustment.

 

4.

Stale gasoline.

 

5.

Dirt or water in fuel tank.

 

6.

Engine cooling system clogged.

Engineoverheats.

1.

Engine cooling system clogged.

 

2.

Carburetor out of adjustment.

 

3.

Oil level is low.

CORRECTION

Reconnectwire.

2.Put lever in STARTposition.

3.Add fuel.

4.See Engine Owner'sManual.

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'sManual).

2.Clean or replace (see Engine Owner'sManual).

3.See Engine Service Dealer.

4.Replacewith fresh gasoline.

5.See Engine Service Dealer.

6.Cleanair cooling system (see Engine Owner'sManual). Cleanair cooling area (see Engine Owner'sManual).

2.See Engine Service Dealer.

3.Check oil level (see Engine Owner'sManual).

Enginedoesnotshotoff WheelsandTineswill notturn

Tinesturn,butwheelsdon't,

WheelsTurn,butTinesDon't,

Poortillingperformance.

1.Misadjusted throttle control or ignition switch.

1.Improper useof 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.

1.See Engine Owner'sManual 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.

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Troy-Bilt 644A Troubleshooting, Problem, Correction, Enginedoesnotshotoff WheelsandTineswill notturn, Enginedoes not start