Troubleshooting Guide - Husqvarna PZ 72 Owner's Manual

Problem
engine will not start
Starter does not turn the engine over
engine runs rough
engine seems weak
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TROUBLESHOOTING GUIDE

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Cause
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