MTD 31AE633E401 Snow Blower User Manual


 
17
SECTION 9: TROUBLESHOOTING
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.
8. Fuel shut-off valve (if equipped) closed.
1. Fill tank with clean, fresh gasoline.
Fuel becomes stale after thirty days
unless a fuel stabilizer is used.
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.
8. Open fuel shut-off valve.
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; fill tank with clean,
fresh gasoline.
3. Drain fuel tank and carburetor. Refill
with fresh fuel.
4. Refer to the engine manual or have
carburetor adjusted by an authorized
engine service dealer.
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
pages 7 and 12.
2. Replace drive belt. Refer to page 14.
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 bolts sherared.
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. Adjust auger control cable. Refer to
page 7.
4. Refer to page 14.
5. Replace shear bolts.