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Problem Cause
Engine overheats. • Clogged air intake or cooling ns.
• Engine overloaded.
• Poor ventilation around engine.
• Defective engine speed regulator.
• Too little or no oil in the engine.
• Fouled spark plug.
Battery not charging. • Poor contact with battery terminal cable
connectors.
• Charging lead is disconnected.
Machine moves slowly, unevenly, or not at all.
• Parking brake on.
• Bypass valve on pump open.
• Drive belt for the transmission gears slack or has
come off.
• Air in hydraulic system.
Mower deck not engaging. • Drive belt for the mower deck has come loose.
• Contact for the electromagnetic coupling has
loosened.
• Blade switch is faulty or has come loose, from the
cable contact.
• Fuse has blown.
Hydraulic drive leaks oil. • Damaged seals, housing, or gaskets.
• Air trapped in hydraulic system.
Uneven mowing results. • Unequal tire pressure on the left and right sides.
• Bent blades.
• Suspension for the mower deck is uneven.
• Blades are dull.
• Driving speed too high.
• Grass is too long.
• Grass collected under the mower deck.
Machine vibrates.
• Blades are loose.
• Blades are incorrectly balanced.
• Engine is loose.
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