MTD 31A-380D062 Two-Stage Snow Thrower

Operator's Manual - Page 14

For 31A-380D062. Also, The document are for others MTD models: 380

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SECTION8: TROUBLESHOOTING
Problem Possible Cause
Engine fails to start
Engine runs erratic 1.
2.
3.
Engine loses power 1.
2.
Excessive vibration 1.
Unit fails to propel 1.
itself
2.
Unit fails to 1.
discharge snow
2.
3.
1. Fuel tank empty, or stale fuel
2. Blocked fuel line
3. Choke not ON
4. Faulty spark plug
5. Key not in ignition switch
6. Spark plug wire disconnected
7. Primer not used properly
Unit running at FULL choke
Blocked fuel line or stale gasoline
Water or dirt in fuel system
Spark plug wire loose
Gas cap vent hole plugged
Loose parts or damaged auger
Drive control cable not adjusted
Drive belt loose or damaged
Discharge chute clogged
Shear bolt sheared.
Foreign object lodged in auger
Remedy
1. Fill tank with fresh gasoline.
2. Clean the fuel line.
3. Turn Choke knob to ON position.
4. Clean, adjust or replace spark plug.
5. Insert the key fully; do not turn.
6. Attach spark plug wire to the spark
plug on the engine.
7. Prime the engine as instructedearlier.
If the carburetor is flooded due to
over-priming, wait till it dries out.
1. Turn choke knob to OFF position.
2. Clean the fuel line, fill tank with fresh
gasoline.
3. Drain fuel tank and carburetor. Fill up
with fresh gasoline.
1. Connect spark plug wire.
2. Remove ice and snow from gas cap.
Be certain that vent hole is clear.
1. Stop the engine immediately and
disconnect spark plug wire. Tighten all
bolts and nuts. If vibration continues,
contact Sears service center.
1. Adjust drive control cable following
earlier instructions.
2. Replace drive belt.
1. Stop engine and disconnect spark
plug wire. Clean discharge chute and
inside of auger housing.
2. Replace shear bolt.
3. Stop engine immediately and
disconnect the spark plug wire.
Remove object from auger.
4. Auger control cable out of adjustment 4. Adjust auger control cable.
5. Auger belt loose or damaged 5. Replace auger belt.
NOTE: For repairs beyond minor adjustments listed above, contact an authorized service dealer.
14
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