Husqvarna 968999766 User Manual
English
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63
TROUBLESHOOTING GUIDE
The engine overheats.
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Clogged air intake or cooling fins.
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Engine overloaded.
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Poor ventilation around engine.
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Defective engine speed regulator.
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Soot in the combustion chamber.
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Too little or no oil in the engine.
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Fouled spark plugs.
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Air trapped in hydraulic system.
Battery not charging.
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Poor contact with battery terminal cable connectors.
The machine moves slowly, unevenly, or not at all.
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Parking brake on.
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Bypass valve on pump open.
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Belt for the transmission gears slack or has come off.
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Air trapped in hydraulic system.
Mower deck not engaging.
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Drive belt for the mower deck has come loose.
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Contact for the electromagnetic coupling has loosened.
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The blade switch is faulty or has come loose, from the
cable contact.
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The fuse has blown.
Transaxle leaks oil.
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Damaged seals, housing, or gaskets.
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Air trapped in hydraulic system.
Problem
Cause
Uneven mowing results.
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Different air pressure in the tires on the left and right sides.
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Bent blades.
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The suspending for the mower deck is uneven.
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The chain fixture has come loose.
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The blades are dull.
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Driving speed too high.
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The grass is too long.
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Grass collected under the mower deck.
The machine vibrates.
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The blades are loose.
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The blades are incorrectly balanced.
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The engine is loose.