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TROUBLESHOOTING
Engine Troubleshooting
Problem
Probable Cause Solution
Erratic engine RPM
during acceleration
or load variations
Engine doesn't turn
Drive clutch binding
Driven clutch
malfunction
Seized engine
Hydrostatic lock
Engine turns but fails
to start
Faulty ignition
No fuel to engine
Poor engine
compression
Engine lacks power
Engine continually
backfires
Engine requires
more than normal
pulls to start
Fouled or defective
spark plug(s)
Fuel filter (loss of
high RPM power)
Plugged fuel filter or
tank pick-up sock
Incorrect clutching
Faulty plug(s)
Fuel System
Incorrect throttle
freeplay or faulty
switch
Poor fuel
Not enough fuel
getting to engine
Plugged fuel filter or
tank pick-up sock
• SEE YOUR DEALER.
• SEE YOUR DEALER.
• SEE YOUR DEALER. Seizure is a
result of poor lubrication,
inadequate fuel supply, broken parts
or improper cooling.
• Fuel may have entered the crankcase
while the vehicle was standing or
being transported. SEE YOUR
DEALER to correct the cause. Drain
plug(s) are located on the lower
crankcase for emergency draining.
• Install new spark plug(s). If engine
still fails to start, check for spark. If
there's no spark, SEE YOUR
DEALER.
• Make sure the fuel valve is on.
• Make sure tank contains fuel.
• Ice may be in the fuel line, filter or
pump. Add isopropyl alcohol to the
fuel system.
• SEE YOUR DEALER.
• This indicates a major engine
problem that must be repaired before
operating. SEE YOUR DEALER.
• Replace the plug(s).
• SEE YOUR DEALER.
• SEE YOUR DEALER.
• SEE YOUR DEALER.
• Change plug(s).
• Dirt or ice may be in the fuel system
(deicer should be added to nonethanol fuel at all times for
assurance against fuel line icing).
• SEE YOUR DEALER.
• Replace with fresh winter fuel.
• SEE YOUR DEALER.
• SEE YOUR DEALER.
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