MTD 406 - Manual (Page 15)

TROUBLE SHOOTING GUIDE
Trouble Possible Cause(s) Corrective Action
Engine fails to start 1. Fuel tank empty, or stale fuel.
2. Throttle control lever not in
starting position.
3. Spark plug wire disconnected.
4. Faulty spark plug.
5. Engine flooded.
1. Fill tank with clean, fresh gasoline.
2. Move throttle lever to START position.
3. Connect wire to spark plug.
4. Clean, adjust gap or replace.
5. Remove spark plug, dry the plug,
and crank engine with plug removed
and throttle in OFF position. Replace
spark plug, connect wire and resume
starting procedures.
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 assembly
instructions).
4. Replace belt.
Wheels do not engage 1. Control cable not adjusted
properly.
2. Belt worn and/or stretched.
1. Adjust control cable (see assembly
instructions).
2. Replace belt.
NOTE; For repairs beyond the minor adjustments listed above, please contact your local service dealer.
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