TROUBLESHOOTING POINTS

TROUBLE

CAUSE

CORRECTION

 

 

 

Difficult starting

Defective spark plug.

Replace defective plug.

 

Water or dirt in fuel system.

Use carburetor bowl drain to flush and refill with fresh fuel.

 

 

 

Engine runs erratic

Blocked fuel line or empty gas

Clean fuel line; check fuel supply; add fresh

 

tank or stale gasoline.

gasoline.

 

 

 

Engine stalls

Unit running on CHOKE.

Set choke lever to RUN position.

 

 

 

Engine runs erratic;

Water or dirt in fuel system.

Use carburetor bowl drain to flush and refill with fresh fuel.

Loss of power

 

 

 

Carburetor out of adjustment.

Adjust carburetor.

 

 

 

Excessive vibration

Loose parts; damaged impeller.

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.

 

 

 

Unit fails to propel

Drive belt loose or damaged.

Replace drive belt.

itself

 

 

 

Incorrect adjustment of traction

Adjust traction drive cable.

 

drive cable.

 

 

Worn or damaged friction wheel.

Replace friction wheel.

 

 

 

Unit fails to discharge

Auger drive belt loose or

Adjust auger drive belt; replace if damaged.

snow

damaged.

 

 

Auger control cable not adjusted

Adjust auger control cable.

 

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.

 

Foreign object lodged in auger.

Stop engine immediately and disconnect spark plug wire.

 

 

Remove object from auger.

 

 

 

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Husqvarna ST724 owner manual Troubleshooting Points, Trouble Cause Correction