Bolens 390 - Manual (Page 12)

TROUBLE SHOOTING GUIDE
Trouble Possible Cause(s) Corrective Action
Engine fails to start 1. Fuel tank empty, or stale fuel.
2. Throttle control lover not in correct
starting position.
3. Blocked fuel line
4. Spark piug wire disconnected.
5. Faulty spark pluc.
6. Engine flooded.
1. Fill tank with clean, fresh gasoline.
2. Move throttle lever to start position.
3. Clean fuel line.
4. Connect wire to spark plug.
5. Clean, adjust gap or replace.
6. Crank engine with throttle in FAST
position.
Engine runs erratic 1. Unit running on (iHOKE.
2. Spark piug wire loose.
3. Blocked fuel line or stale fuel.
4. Vent in gas cap plugged.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
7. Carburetor out o adjustment.
1. Move choke lever to OFF position.
2. Connect and tighten spark plug wire.
3. Clean fuel line; fill tank with clean,
fresh gasoline.
4. Clear vent.
5. Drain fuel tank. Refill with fresh fuel.
6. Clean air cleaner as instructed in
separate engine manual.
7. Adjust carburetor as instructed in
separate engine manual.
Engine overheats 1. Engine oil level low.
2. Air flow restricted.
3. Carburetor not adjusted properly.
1. Fill crankcase with proper oil.
2. Remove blower housing and clean as
instructed in separate engine manual.
3. Adjust carburetor as instructed in
separate engine manual.
Tines do not engage 1. Foreign object lodged in tines.
2. Tine clevis pin(sj missing.
3. Control cable no adjusted properly.
4. Belt worn and/or stretched.
1. Dislodge foreign object.
2. Replace tine clevis pin(s).
3. Adjust control cable (see assembly
instructions).
4. Replace belt.
NOTE: For repairs beyond the minor adjustments lii ted above, please contact your local service dealer.
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