Yazoo/Kees ZELKH52250, ZELKH61250, ZELKH72270 manual Troubleshooting, Problem, Cause, English-56

TROUBLESHOOTING

Problem		Cause
The engine overheats.	•	Clogged air intake.
	•	Engine overloaded.
	• Poor ventilation around engine.
	• Defective engine speed regulator.
	• Too little or no oil in the engine.
	•	Fouled spark plugs.
Battery not charging.	•	Poor contact with battery terminal cable connectors.
	• Charging lead is disconnected.
The machine moves slowly, unevenly, or not at all.	•	Parking brake on.
	• Bypass valve on pump open.
	• Drive belt for the transmission slack or
		has come off.
	• 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.
	•	Blown fuse.
Transaxle leaks oil.	•	Damaged seals, housing, or gaskets.
	• Air trapped in hydraulic system.
Uneven mowing results.	•	Different air pressure in the tires on the left and right
		sides.
	•	Bent blades.
	• The suspension for the mower deck is uneven.
	• The blades are dull.
	• Driving speed too high.
	• The grass is too long.
	• Grass collected under the mower deck.

English-56