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Husqvarna - 57
TROUBLESHOOTING GUIDE
Problem Cause
The engine seems weak. • Clogged air lter.
• Fouled spark plugs.
• Carburetor incorrectly adjusted.
The engine overheats. • Clogged air intake or cooling ns.
• Engine overloaded.
• Poor ventilation around engine.
• Defective engine speed regulator.
• Soot in the combustion chamber.
• Too little or no oil in the engine.
• Fouled spark plug.
• 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 transmission gears slack or has
come off.
• Defective hydraulic system.
• Air 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.
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.
The machine vibrates. • The blades are loose.
• The blades are incorrectly balanced.
• The engine is loose.