SECTION 8: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Spark plug wire disconnected.

1.

Connect wire to spark plug.

 

2.

Fuel tank empty or stale fuel.

2.

Fill tank with clean, fresh gasoline.

 

3.

Throttle control lever not in correct

3.

Move throttle lever to FAST position.

 

 

starting position. (If Equipped)

 

 

 

4.

Choke not in CHOKE position.

4.

Move choke to CHOKE position.

 

 

(If Equipped)

 

 

 

5.

Engine not primed properly.

5.

Prime engine.

 

6.

Blocked fuel line.

6.

Clean fuel line.

 

7.

Faulty spark plug.

7.

Clean, adjust gap, or replace.

Engine runs erratic

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Unit running on CHOKE.

2.

Move choke lever to OFF position.

 

 

(If Equipped)

 

 

 

3.

Blocked fuel line or stale fuel.

3.

Clean fuel line; fill tank with clean, fresh

 

 

 

 

gasoline

 

4.

Water or dirt in fuel system.

4.

Drain fuel tank. Refill with fresh fuel.

 

5.

Dirty air cleaner.

5.

Clean or replace air cleaner.

 

6.

Carburetor out of adjustment.

6.

See authorized service dealer.

Engine overheats

1.

Engine oil level low.

1.

Fill crankcase with proper oil.

 

2.

Dirty air cleaner.

2.

Clean or replace air cleaner.

 

3.

Carburetor not adjusted properly.

3.

See authorized service dealer.

NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

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MTD 500 thru 510 manual Troubleshooting, Problem Cause Remedy