MTD 31AH553G401 Snow Blower User Manual


 
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SECTION 9: TROUBLE SHOOTING GUIDE
NOTE: For repairs beyond the minor adjustments listed above, please contact your local authorized service dealer.
Trouble Possible Cause(s) Corrective Action
Engine fails to start 1. Fuel tank empty, or stale fuel.
2. Blocked fuel line.
3. Choke not in the 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 closed.
1. Fill tank with clean, fresh gasoline. Fuel becomes stale
after thirty days.
2. Clean the fuel line.
3. Move switch to the 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 the fuel
system.
1. Move the choke lever to OFF position.
2. Clean the fuel line; fill the tank with clean, fresh gasoline.
3. Drain the fuel tank and carburetor. Refill with fresh fuel.
Loss of power 1. Spark plug wire loose.
2. Gas cap vent hole plugged.
1. Connect and tighten spark plug wire.
2. Remove ice and snow from gas cap. Be certain vent hole
is clear.
Excessive
vibration
1. Loose parts or damaged
auger.
1. Stop the engine immediately and disconnect the spark
plug wire. Tighten all bolts and nuts. If vibration continues,
have the 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 page 11 of this
manual.
2. Replace drive belt. Refer to page 17 of this manual.
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 sheared.
1. Stop engine 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 11 of this
manual.
4. Refer to page 15 of this manual.
5. Replace shear bolt.
Electric chute fails
to turn
1. Loose electrical connections.
2. Blown Fuse.
1. Make sure all connections are tight and fully installed.
2. Replace with new 5 amps fuse. (Fuse is located under
handle panel near switch connector.)
Electric chute
turns in opposite
direction of the
switch
1. Switch connector installed
backwards
1. Unplug the switch connector under the handle panel. Turn
connector 180° and reconnect.
Heated grips are
not creating heat
1. Loose electrical connections.
2. Blown fuse.
3. Faulty Stay Warm grip.
1. Under the handle panel, check connections from the
handles to the wiring harness.
2. Replace with new 5 amps fuse under the handle panel
near crank switch connector.
3. Have the grips checked at an authorized service dealer.
NOTE: If one Stay Warm grip fails, both grips will not
function.