MTD 21A-410-022 - Manual (Page 10)

TROUBLE SHOOTING GUIDE
Trouble Possible Cause(s) Corrective Action
Engine fails to start 1. Cold engine not choked.
2. Fuel tank empty, or stale fuel.
3. Throttle control lever not in
starting position.
4. Spark plug wire disconnected.
5. Faulty spark plug.
6. Engine flooded.
1. Move choke lever to CHOKE
position.
2. Fill tank with clean, fresh gasoline.
3. Move throttle lever to FAST position.
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 CHOKE.
2. Spark plug wire loose.
3. Stale fuel.
4. Vent in gas cap plugged.
5. Water or dirt in fuel system.
6. Dirty air cleaner.
7. Carburetor out of adjustment.
1. Move choke lever to OFF position.
2. Connect and tighten spark plug wire.
3. 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(s) missing.
3. Control cable not adjusted
properly.
4. Belt worn and/or stretched.
1. Dislodge foreign object.
2. Replace tine clevis pin(s).
3. Adjust control cable (see Adjustment
Section).
4. Replace belt.
Wheels do not engage 1. Control cable not adjusted
properly.
2. Belt worn and/or stretched.
1. Adjust control cable (see Adjustment
Section).
2. Replace belt.
NOTE: For repairs beyond the minor adjustments iisted above, please contact your local service dealer.
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