Craftsman 536.887993 Operator's Manual page 30

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TROUBLE CORRECTION
Difficult starting
CAUSE
Defective spark plug.
Water or dirt in fuel system,
Replace spark plug.
Remove fuel from fuel tank.
Add fresh fuel.
Engine runs erratically Blocked fuel line, empty gas Clean fuel line; check fuel
tank, or stale gasoline supply; add fresh gasoline
Engine stalls Unit running on CHOKE. Set choke lever to OFF
position.
Engine runs erratic; Water or dirt in fuel system. Remove fuel from fuel tank.
Loss of power Add fresh fuel.
Excessive vibration Loose parts: damaged Immediately stop engine.
impeller Remove ignition key. Tighten
all fasteners and make all
necessary repairs. If
vibration continues, take the
unit to a Sears service
center.
Unit fails to propel itself Traction drive belt loose or Replace traction drive belt.
damaged.
Incorrect adjustment of Adjust traction drive cable.
traction drive cable
Worn or damaged friction Replace friction wheel.
wheel.
Auger drive belt loose or
damaged.
Adjust auger drive belt;
replace if damaged.
Auger control cable not Adjust auger control cable.
adjusted correctly.
Shear bolt broken Replace shear bolt
Discharge chute clogged. Stop engine immediately and
disconnect spark plug wire.
Clean discharge chute and
inside of auger housing.
Unit fails to discharge
snow
Foreign object lodged in
auger
Stop engine immediately and
disconnect spark plug wire.
Remove object from auger.
F-O31098L 30