Bolens 643C, 643B, 645A warranty Trouble Shooting

Models: 643B 643C 645A

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Trouble

Shooting

For repairs beyond the minor adjust- ments listed here, contact an authorized service dealer.

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 start position.

 

 

starting position (if equipped)

 

 

 

4.

Choke not in ON position.

4.

Move lever to ON position.

 

5.

Blocked fuel line.

5.

Clean fuel line.

 

6.

Faulty spark plug.

6.

Clean, adjust gap, or replace.

 

7.

Engine flooding.

7.

Refer to the engine manual packed

 

 

 

 

with your unit.

 

 

 

 

 

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.

 

3.

Blocked fuel line or stale fuel.

3.

Clean fuel line; fill tank with clean,

 

 

 

 

fresh gasoline.

 

4.

Gas cap vent plugged.

4.

Clear vent.

 

5.

Water or dirt in fuel system.

5.

Drain fuel tank and carburetor.

 

 

 

 

Refill with fresh fuel.

 

6.

Dirty air cleaner.

6.

Refer to the engine manual packed

 

 

 

 

with your unit.

 

7.

Carburetor out of adjustment.

7.

Refer to the engine manual packed

 

 

 

 

with your unit.

 

 

 

 

 

Engine overheats

1.

Engine oil level low.

1.

Fill crankcase with proper oil.

 

2.

Dirty air filter.

2.

Refer to the engine manual packed

 

 

 

 

with your unit.

 

3.

Air flow restricted.

3.

Remove blower housing and clean.

 

4.

Carburetor not adjusted properly.

4.

Refer to the engine manual packed

 

 

 

 

with your unit.

 

 

 

 

 

Tines do no engage

1.

Foreign object lodged in tines.

1.

Stop tiller completely, check and

 

2.

Tine clevis pin(s) missing.

 

discard foreign object.

 

 

 

 

3.

Belt worn and/or stretched.

2.

Replace tine clevis pin(s).

 

 

 

 

4.

Pulley and idler not in correct adjust-

3.

Replace belt.

 

 

 

 

 

ment.

4.

Take unit to authorized service

 

 

 

 

 

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Bolens 643C, 643B, 645A warranty Trouble Shooting