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Lubricate moving parts with water-resistant
grease. (See page 58 for information on the
main lubrication points.)
Fill the intermediate housing with water-resis-
tant grease through the grease nipple using a
Checking the fuel filter
Check the fuel filter. The fuel filter should be
replaced if water or dirt is found in the filter.
Have a Yamaha dealer replace the fuel filter if
Checking the spark plugs
Be careful not to damage the insulator
when removing or installing a spark plug.
A damaged insulator could allow sparks to
escape, which could result in a fire or ex-
Remove and check the condition of the spark
The condition of a spark plug can indicate
something about the condition of the engine.
For example, if the center electrode portion is
very white, this could indicate an intake air
leak or carburetion problem in that cylinder.
Do not attempt to diagnose any problems
yourself. Have a Yamaha dealer service the
Nuts and bolts Check —
Initial Thereafter every
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Initial 10 hours or 1 month:
20.0–22.0 cm³ (0.68–0.74 US oz,
Every 100 hours or 12 months:
3.0–5.0 cm³ (0.10–0.17 US oz,
1 Fuel filter
UF2F12E0.book Page 64 Tuesday, July 14, 2009 3:07 PM