25
TROUBLESHOOTING ENGINE OPERATION PROBLEMS
ENGINE MISFIRES
Wrong or fouled spark plug
Carburetor improperly adjusted
Ignition timing
Excessive carbon build up
Leaking seals or gaskets
ENGINE VIBRATES
EXCESSIVELY
Bent crankshaft
Attached equipment out of
balance
Loose mounting bolts
LACKS POWER
Air intake obstructed
Lack of lubrication or improper
lubrication
Carburetor improperly adjusted
Exhaust Obstructed
Loss of compression
Crankcase seals or gaskets
leaking
Choke, throttle, or governor not
operating properly
Ignition Timing
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