Yazoo/Kees ZMKW 5222, ZMKW 6124 manual troubleshooting guide, Problem, Cause

troubleshooting guide

Problem	Cause
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.
	• 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.

48