Yazoo/Kees ZMKW48172, ZMKW52212, ZMKH61252, ZMKW48192, ZMKH52252 manual English-49

trouble shooting

	The engine overheats.	•	Clogged air intake or cooling fins.
		•	Engine overloaded.
		• Poor ventilation around engine.
		• Defective engine speed regulator.
		• Soot in the combustion chamber.
		• Too little or no oil in the engine.
		•	Defective spark plugs.
		• Pre-ignition incorrect.
	The machine moves slowly, unevenly,	•	Parking brake on.
	or not at all.	•	Bypass valve on pump open.
		• Drive belt for the transmission gears slack or has come off.
		•	Defective hydraulic system.
		• Air trapped in hydraulic system.
	Mower deck not engaging.	•	Drive belt for the mower deck has come loose.
		• Contact for the electromagnetic coupling has loosened.
		• The blade switch is faulty or has come loose, from the cable
			contact.
		• The fuse has blown.
	Uneven mowing results.	•	Different air pressure in the tires on the left and light sides.
		•	Bent blades.
		• The chains for suspending the mower deck are uneven.
		• The chain fixture has come loose.
		• The blades are blunt.
		• Driving speed too high.
		• The grass is too long.
		• Grass collected under the mower deck.
	The machine vibrates.	•	The blades are loose.
		• The blades are incorrectly balanced.
		• The engine is loose.
Uneven mowing results.		•	Different air pressure in the tires on the left and right sides.
		•	Bent blades.
		• The suspending for the mower deck is uneven.
		• The chain fixture has come loose.
		• The blades are blunt.
		• Driving speed too high.
		• The grass is too long.
		• Grass collected under the mower deck.

English-49