Troubleshooting Points - Craftsman 143.804062 Owner's Manual

4 horsepower 20" dual stage trac-plus optional electric start snow thrower
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T OU................
G POUNTS
TROUBLE
Engine runs erratic
Engine
stalls
Engine runs erratic;
Loss of power
Excessive
vibration
Unit fails to propel
itself
Unit fails to
discharge
snow
Unit rides up
CAUSE
Defective spark plug
Water or dirt in fuel system
Biocked fuel line 0r emp_
gas
Unit running on CHOKE
Water or dirt in fuel system
Carburetor
out of adjustment
Loose parts; damaged impeller
........................
::::: ................
Drive belt loose or damaged
incorrect adjustment
of traction
drive cable
Worn or damaged friction wheel
Auger drive belt loose or damaged
fuel.
Clean fuel line; check fuel supply; add fresh
gasoline
CORRECTION
Replace detective
plug
Use carburetor bowl drain to flush and refill with flesh
Set choke lever to RUN position
Use carburetor bowl drain to flush and refill with fresh
fuel
Adjust carburetor
Stop engine immediately
and disconnect spark plug wire
Tighten all bolts and make all necessary repairs If vibration
continues, have the unit serviced by a competent repairman
Repiace drive belt
Adjust traction drive cable
Replace friction wheel
i Adjust auger drive belt; replace if damaged
Auger control cable not adjusted
correctly
Shear bolt broken
Adjust auger control cable
Replace shear bolt
Stop engine immediately and disconnect
spark plug wire
Clean discharge chute and inside of auger housing
Discharge chute clogged
Foreign object lodged in auger
Stop engine immediately and disconnect
spark plug wire
Remove object from auger
Weight transfer disengaged
Engage weight transfer pedal
25

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