Greasing; Cleaning And Adjusting Spark Plug - SELVA MARINE MARLIN 100 EFI Owner's Manual

Maintenance
EMU28940

Greasing

Selva grease (water resistant grease)
Selva grease (corrosion resistant grease; for propeller shaft)
EMU28951

Cleaning and adjusting spark plug

EWM00560
WARNING
When removing or installing a spark plug,
be careful not to damage the insulator. A
damaged insulator could allow external
sparks, which could lead to explosion or
fire.
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate something about
the condition of the engine. For example, 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 di-
39
agnose any problems yourself. Instead, take
the outboard motor to a Selva dealer. You
should periodically remove and inspect the
spark plug because heat and deposits will
cause the spark plug to slowly break down
and erode. If electrode erosion becomes ex-
cessive, or if carbon and other deposits are
excessive, you should replace the spark plug
with another of the correct type.
Before fitting the spark plug, measure the
electrode gap with a wire thickness gauge;
adjust the gap to specification if necessary.
ZMU04266