Troubleshooting – Husqvarna 966582101 User Manual

Page 44

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Problem

Cause

The engine seems weak.

Clogged air filter.

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Fouled spark plugs.

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Carburetor incorrectly adjusted.

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The engine overheats.

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 plug.

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Battery not charging.

Poor contact with battery terminal cable

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connectors.

The machine moves slowly, unevenly, or not at all.

Parking brake on.

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Hydraulic pump bypass linkage engaged.

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Drive belt for the transmission gears slack or has

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come off.
Defective hydraulic system.

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Air in hydraulic system.

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Mower deck not engaging.

Drive belt for the mower deck has come loose.

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Contact for the electromagnetic coupling has

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loosened.
Blade switch is faulty or has come loose, from the

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cable contact.
Fuse has blown.

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Uneven mowing results.

Different air pressure in the tires on left and right

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sides.
Bent blades.

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Suspension for the mower deck is uneven.

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Blades are dull.

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Driving speed too high.

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Grass is too long.

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Grass collected under the mower deck.

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The machine vibrates.

Blades are loose.

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Blades are incorrectly balanced.

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Engine is loose.

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