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TROUBLE SHOOTING GUIDE
The engine seems weak. • Clogged air filter.
• Defective spark plugs.
• Carburetor incorrectly adjusted.
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.
Battery not charging. • Poor contact with battery terminal cable
connectors.
The machine moves slowly, unevenly,
or not at all.
• Parking brake on.
• Bypass valve on pump open.
• Drive belt for the pump slack or has come off.
• Defective hydraulic system.
• Air in the 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.
Problem Cause