Yamaha 8A Owner's Manual download pdf (Page 53)

Maintenance

48

EMU28932

Greasing

Yamaha marine grease (Water resistant grease)

8

EMU28956

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

Yamaha 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.

ZMU02872

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