F20HE, F20FE/T
HD28957
Cleaning and adjusting spark plug
The spark plug is an important engine com-
ponent and is easy to inspect. The condition
of the spark plug can indicate something
about the condition of the engine. For
exam- ple, if the center electrode porcelain
is very white, this could indicate an intake
air leak or carburetion problem in that
cylinder. Do not attempt to diagnose any
problems yourself. Instead, take the
outboard motor to a
Hidea dealer. You should periodically re-
move and inspect the spark plug because
heat and deposits will cause the spark plug
to slowly break down and erode.
1. Remove the spark plug caps from the
spark plugs.
2. Remove the spark plug. If electrode
ero- sion becomes excessive, or if
carbon and other deposits are
excessive, you should replace the
spark plug with an- other of the correct
type. WARNING!
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