Craftsman PRO Series Operator's Manual page 23

Problem
Engine fails to start
Engine running erratically/
inconsistent RPM (hunting or
surging)
Excessive vibration
Loss of power
Unit fails to propel itself
Unit fails to discharge snow
Chute fails to easily rotate 180-200
degrees
Unit plows snow instead of
blowing it
TROUBLESHOOTING
Cause
1. Choke control not in CHOKE position.
2. Spark plug wire disconnected.
3. Faulty spark plug.
4. Fuel tank empty or stale fuel.
5. Engine not primed.
6. Safety key not inserted.
7. Extension cord not connected (when using electric start
button, on models so equipped).
1. Engine running on CHOKE.
2. Stale fuel.
3. Water or dirt in fuel system.
4. Carburetor out of adjustment.
5. Over-governed engine.
1. Loose parts or damaged auger or impeller.
1. Spark plug wire loose.
2. Gas cap vent hole plugged.
1. Drive cable in need of adjustment.
2. Drive belt loose or damaged.
3. Worn friction wheel.
1. Chute assembly clogged.
2. Foreign object lodged in auger.
3. Auger cable in need of adjustment.
4. Auger belt loose or damaged.
5. Shear pin(s) sheared.
1. Chute assembled incorrectly.
1. Low/slow ground speed in wet/slushy snow 1-3" deep.
2. Shear pin(s) sheared.
1. Move choke control to CHOKE position.
2. Connect wire to spark plug.
3. Clean, adjust gap, or replace.
4. Fill tank with clean, fresh gasoline.
5. Prime engine as instructed in the Operation section.
6. Insert safety key fully into the switch.
7. Connect one end of the extension cord to the electric starter
outlet and the other end to a three-prong 120V, grounded, AC
outlet.
1. Move choke control to RUN position.
2. Fill tank with clean, fresh gasoline.
3. Drain fuel tank by running engine until it stops. Refill with fresh
fuel.
4. Contact your Sears Parts & Repair Center.
5. Contact your Sears Parts & Repair Center.
1. Stop engine immediately and disconnect spark plug wire.
Tighten all bolts and nuts. If vibration continues, have unit
serviced by a Sears Parts & Repair Center.
1. Connect and tighten spark plug wire.
2. Remove ice and snow from gas cap. Be certain vent hole is clear.
1. Adjust drive control cable. Refer to Service and Maintenance
section.
2. Have drive belt replaced. Contact your Sears Parts & Repair
Center.
3. Replace friction wheel. Refer to Service and Maintenance
section.
1. Stop engine immediately and disconnect spark plug wire. Clean
chute assembly and inside of auger housing with clean-out tool.
2. Stop engine immediately and disconnect spark plug wire.
Remove object from auger with clean-out tool.
3. Adjust auger control cable. Refer to Assembly section.
4. Replace auger belt. Refer to Service and Maintenance section.
5. Replace with new shear pin(s). Refer to Operation section.
1. Disassemble chute control and reassemble as directed in the
Assembly section.
1. Increase ground speed. Always operate engine at FULL throttle.
2. Replace with new shear pin(s). Refer to Operation section.
23
Remedy