Husqvarna iZ5223TKOA, iZ4821TSKAA, iZ6123TKAA, iZ4817TSKAA Trouble Shooting Guide, Problem Cause

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 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 Checking the Safety System on page 38.
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 plugs.
	•	The spark plugs are loose.
	•	Defective ignition cable.
	•	Defective spark plug electrode.
	•	Defective spark plug connection.
	•	Rich fuel mixture or fuel-air mixture.
	•	Wrong fuel type.
	•	Water in the fuel.
	•	Clogged air filter.

English-62