Club Car Carryall 300 2021, Maintenance And Service Manual

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Electrical System
55 17 690 15 Rev. -- KohlerEngines.com
Inspection
Inspect spark plug as it is removed from cylinder head.
Deposits on tip are an indication of general condition of
piston rings, valves, and fuel mixture.
Normal and fouled plugs are shown in following photos:
Normal
Plug taken from an engine operating under normal
conditions will have light tan or gray colored deposits. If
center electrode is not worn, plug can be set to proper
gap and reused.
Worn
On a worn plug, center electrode will be rounded and
gap will be greater than specifi ed gap. Replace a worn
spark plug immediately.
Wet Fouled
A wet plug is caused by excess fuel or oil in combustion
chamber. Excess fuel could be caused by a restricted
air cleaner, a fuel mixture problem. Oil in combustion
chamber is usually caused by a restricted air cleaner, a
breather problem, worn piston rings, or valve guides.
Carbon Fouled
Soft, sooty, black deposits indicate incomplete
combustion caused by a restricted air cleaner, over rich
fuel mixture, weak ignition, or poor compression.
Overheated
Chalky, white deposits indicate very high combustion
temperatures. This condition is usually accompanied
by excessive gap erosion. Lean fuel mixture settings,
an intake air leak, or incorrect spark timing are normal
causes for high combustion temperatures.