MTD 31AE993I401 - Manual (Page 18)

18
SECTION 9: TROUBLESHOOTING
NOTE: For repairs beyond minor adjustments listed above, contact the local dealer.
Problem Cause Remedy
Engine fails to start. 1. Fuel tank empty, or stale fuel.
2. Blocked fuel line.
3. Choke not in ON position
4. Faulty spark plug.
5. Safety key not in ignition switch on engine.
6. Spark plug wire disconnected.
7. Primer button not being used properly.
1. Fill tank with fresh gasoline.
2. Clean the fuel line.
3. Move switch to ON position
4. Clean, adjust gap or replace.
5. Insert the key fully into the switch.
6. Connect spark plug wire.
7. Refer to the engine manual.
Engine runs erratic. 1. Unit running on CHOKE.
2. Blocked fuel line or stale fuel.
3. Water or dirt in fuel system.
4. Carburetor out of adjustment.
1. Move choke lever to OFF position.
2. Clean fuel line and fill tank with clean, fresh
gasoline.
3. Drain fuel tank and carburetor. Refill with
fresh fuel.
4. Refer to the engine manual.
Loss of power. 1. Spark plug wire loose.
2. Gas cap vent hole plugged.
3. Exhaust port plugged.
1. Connect and tighten spark plug wire.
2. Remove ice and snow from gas cap. Be
certain vent hole is clear.
3. Refer to the engine manual.
Engine overheats. 1. Carburetor not adjusted properly. 1. Refer to the engine manual or have the
carburetor adjusted by an authorized
engine service dealer.
Excessive vibration. 1. Loose parts or damaged auger. 1. Stop engine immediately and disconnect
spark plug wire. Tighten all bolts and nuts. If
vibration continues, have unit serviced by
an authorized service dealer.
Unit fails
to propel itself. 1. Traction control cable in need of adjustment.
2. Drive belt loose or damaged.
1. Adjust traction control cable. Refer to
Adjustments.
2. Replace drive belt.
Unit fails
to discharge snow. 1. Discharge chute clogged.
2. Foreign object lodged in auger.
3. Auger control cable in need of adjustment.
4. Auger belt loose or damaged.
5. Shear bolt(s) sheared.
1. Stop engine immediately and disconnect
spark plug wire. Clean discharge chute and
inside of auger housing.
2. Stop engine immediately and disconnect
spark plug wire. Remove object from auger.
3. Refer to Final Adjustments in Assembly
Section.
4. Refer to Adjustments.
5. Replace shear bolt(s).