TROUBLE SHOOTING GUIDE

Trouble Shooting Guide

Problem

Cause

 

 

 

The engine will not start.

The blade switch is engaged.

The steering controls are not locked in the neutral position.

The driver is not sitting in the driver’s seat.

The parking brake is not activated.

The battery is dead.

Contamination in the carburetor or fuel line.

The fuel supply is closed or the tap

for the fuel tanks is in the wrong position.

Clogged fuel filter or fuel line.

The starter motor 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 motor safety circuit.

 

 

See Checking the Safety System in the

 

 

Maintenance section.

 

 

 

The engine runs rough.

Faulty carburetor.

 

• The choke control is pulled out with a warm engine.

 

Defective valves.

 

• Defective piston, cylinder, piston ring, or

 

 

cylinder head seal.

 

• The cylinder head bolts are loose.

 

• Clogged fuel filter or jet.

 

• Clogged ventilation valve on the fuel cap.

 

• Fuel tank nearly empty.

 

Defective spark plug.

 

• The spark plug is loose.

 

Defective ignition cable.

 

• Defective spark plug electrode.

• Defective spark plug connection.

• Rich fuel mixture or fuel-air mixture.

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Husqvarna Z4219, Z4824, Z5426, Z4218 manual Trouble Shooting Guide, Problem Cause

Z5426, Z4219, Z4218, Z4824 specifications

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