Yazoo/Kees ZELKH61250 - Manual (Page 56)

TROUBLESHOOTING
English - 56
The engine overheats.
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.
• Clogged air intake.
• Engine overloaded.
• Poor ventilation around engine.
• Defective engine speed regulator.
• Too little or no oil in the engine.
• Fouled spark plugs.
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.
Problem Cause