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30
TROUBLESHOOTING
Problem / Cause
Engine will not start
Blade switch is engaged
Steering controls are not locked in the outer
position
Dead battery
Contamination in the carburetor or fuel line
Fuel supply shutoff valve is closed or in the
wrong position
Clogged fuel lter or fuel line
Ignition system faulty
Starter does not turn the engine over
Dead battery
Battery terminal cable contacts are defective
Blown fuse
Fault in the starter safety circuit. See Safety
System in the Maintenance Section
Engine runs rough
Faulty carburetor
Clogged fuel lter or jet
Throttle lever in the Cold Weather starting
position
Clogged ventilation valve on the fuel cap
Fuel tank almost empty
Fouled spark plugs
Rich fuel mixture or fuel-air mixture
Wrong fuel type
Water in fuel
Clogged air lter
Engine seems weak
Clogged air lter
Fouled spark plugs
Carburetor incorrectly adjusted
Air trapped in the hydraulic system
Machine vibrates
Blades are loose
Blades are incorrectly balanced
Engine is loose
Engine overheats
Clogged air intake or cooling ns
Engine overloaded
Inadequate ventilation around engine
Defective engine speed regulator
Too little or no oil in the engine
Contamination in the fuel line
Fouled spark plugs
Battery not charging
Battery terminal cable contacts are defective
Charging lead is disconnected
Mower moves slowly, unevenly, or not at all
Park brake is activated
Bypass linkages are engaged
Transmission drive belt is slack or off
Air trapped in the hydraulic system
Mower deck not engaging
Drive belt for the mower deck is loose
Electromagnetic coupling contact is loose
Blade switch is faulty or loose from cable
contact
Blown fuse
Transaxle leaks oil
Damaged seals, housing or gaskets
Air trapped in the hydraulic system
Uneven mowing results
Unequal air pressures in the tires
Bent blades
Suspension for the mower deck is uneven
Blades are dull
Driving speed is too high
Grass is too long
Grass collected below the mower deck
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