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TROUBLESHOOTING
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Problem Cause
Engine seems weak • Clogged air filter
• Fouled spark plugs
• Carburetor incorrectly adjusted
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
• Fouled spark plug
Battery not charging • Poor contact with battery terminal cable connectors.
Machine moves slowly, unevenly, or not at all • Parking brake on
• Hydraulic pump bypass linkage engaged
• 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
• Blade switch is faulty or has come loose, from the cable
contact
• Fuse has blown
Uneven mowing results • Different air pressure in the tires on 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