Husqvarna PZ 72 Owners Manual - Page 48

TROUBLESHOOTING GUIDE, Problem, Cause

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Problem TROUBLESHOOTING GUIDE Cause Engine will not start Starter does not turn the engine over Engine runs rough Engine seems weak • Blade switch is engaged • Steering controls are not locked in the neutral position • Parking brake is not activated • Battery is dead • Contamination in the carburetor or fuel line • Fuel supply is closed or the tap for the fuel tank is in the wrong position • Clogged fuel filter or fuel line • Faulty ignition system • Dead battery • Poor contacts on the battery terminal cable connections • Fuse blown • Ignition system faulty • Fault in the starter safety circuit, see Safety System in the Maintenance Section • Faulty carburetor • Choke control is pulled out with warm engine • Clogged fuel filter or jet • Clogged ventilation valve on the fuel cap • Fuel tank nearly empty • Fouled spark plug • Spark plug is loose • Rich fuel mixture or fuel-air mixture • Wrong fuel type • Water in the fuel • Clogged air filter • Clogged air filter • Fouled spark plugs • Carburetor incorrectly adjusted 48

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TROUBLESHOOTING GUIDE
Problem
Cause
48
Engine will not start
•
Blade switch is engaged
•
Steering controls are not locked in the neutral position
•
Parking brake is not activated
•
Battery is dead
•
Contamination in the carburetor or fuel line
•
Fuel supply is closed or the tap for the fuel tank is in the
wrong position
•
Clogged fuel filter or fuel line
•
Faulty ignition system
Starter does not turn the engine over
•
Dead battery
•
Poor contacts on the battery terminal cable connections
•
Fuse blown
•
Ignition system faulty
•
Fault in the starter safety circuit, see
Safety System
in the
Maintenance
Section
Engine runs rough
•
Faulty carburetor
•
Choke control is pulled out with warm engine
•
Clogged fuel filter or jet
•
Clogged ventilation valve on the fuel cap
•
Fuel tank nearly empty
•
Fouled spark plug
•
Spark plug is loose
•
Rich fuel mixture or fuel-air mixture
•
Wrong fuel type
•
Water in the fuel
•
Clogged air filter
Engine seems weak
•
Clogged air filter
•
Fouled spark plugs
•
Carburetor incorrectly adjusted