Yamaha F25 User Manual download pdf (Page 41)

Maintenance

EMU28874

Maintenance chart (additional)

EMU28931

Greasing

Yamaha marine grease (Water resistant grease)

EMU28952

Cleaning and adjusting spark plug

WARNING

EWM00560

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

Item Actions

Every

500 hours (2.5 years) 1000 hours (5 years)

Exhaust guide, exhaust

manifold

Inspection / replace-

ment

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Yamaha F25 User Manual Page 41