Engine Operation Problems
Excessive engine loading
OVERHEATS
Low oil level or wrong viscosity oil
Cooling air flow obstructed or
clogged cooling fins
Carburetor improperly adjusted or
improper RPM setting*
Ignition timing or
incorrect spark plug
Carbon in the combustion
chamber
ENGINE KNOCKS
Check for excessive carbon in
combustion chamber
Loose flywheel examine key, key way
and proper flywheel nut torque
Ignition timing or
incorrect spark plug
Loose or worn connecting rod
Worn cylinder
Associated equipment loose or
improperly adjusted
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