Troubleshooting - Yard-Man 31AH5C3F401 Operator's Manual

Mtd snow thrower operator’s manual
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SECTION 8: TROUBLE SHOOTING
Problem
Engine fails to start
1.
2.
3.
4.
5.
6.
7.
8.
Engine runs erratic
1.
2.
3.
4.
Loss of power
1.
2.
3.
Engine overheats
1.
Excessive vibration
1.
Unit fails
1.
to propel itself
2.
Unit fails
1.
to discharge snow
2.
3.
4.
5.
Electric chute fails to
1.
turn
2.
Electric chute turns in
1.
opposite direction of
the switch
Heated grips are not
1.
creating heat
2.
3.
Cause
Fuel tank empty, or stale fuel.
Blocked fuel line.
Choke not in ON position
Faulty spark plug.
Safety key not in ignition switch on engine.
Spark plug wire disconnected.
Primer button not being used properly.
Fuel shut-off valve closed.
Unit running on CHOKE.
Blocked fuel line or stale fuel.
Water or dirt in fuel system.
Carburetor out of adjustment.
Spark plug wire loose.
Gas cap vent hole plugged.
Exhaust port plugged.
Carburetor not adjusted properly.
Loose parts or damaged auger.
Traction control cable in need of adjustment.
Drive belt loose or damaged.
Discharge chute clogged.
Foreign object lodged in auger.
Auger control cable in need of adjustment.
Auger belt loose or damaged.
Shear bolt(s) sheared.
Loose electrical connections.
Blown Fuse.
The switch connector is installed backwards
Loose electrical connections.
Blown fuse.
Faulty grip. If one heated grip fails, both grips
will not function.
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.
8.
Open fuel shut-off valve.
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.
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.
1.
Refer to the engine manual or have the
carburetor adjusted by an authorized
engine service dealer.
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.
1.
Adjust traction control cable. Refer to
Adjustment Section.
2.
Replace drive belt. Refer to Servicing
Section.
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 the Servicing Section.
5.
Replace shear bolt(s).
1.
Make sure all connections are tight and fully
installed.
2.
Replace with #5A fuse. The fuse is under
handle panel near switch connector.
1.
Unplug the switch connector under the
handle panel. Turn connector 180° and
reconnect.
1.
Under the handle panel, check connections
from the handles to the wiring harness.
2.
Replace with #5A fuse. The fuse is under
handle panel near switch connector.
3.
Have the grips checked at an authorized
service dealer.
15
Remedy

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