Engine, General
Serpentine Belt
51535
CAUTION!
The serpentine belt and pulley system have pinch
points that can cause injury. If the engine is running,
keep fingers away from the belt and all pulleys. Also
be aware of loose clothing and keep away from the
belt and all pulleys.
All engines use a serpentine belt, which is a continu-
ous-loop belt threaded through the automatic belt ten-
sioner A, alternator pulley B, idler pulley C, power
steering pump pulley D, raw water pump pulley E, and
circulating pump pulley F.
Check the indicators, located on the automatic ten-
sioner housing, to determine the amount of tension
loss. When tick marks G and H coincide, it’s time to
replace the serpentine belt. As long as mark G is
between marks H and I, the belt has adequate tension
on it.
Also check the serpentine belt for:
● Regularly spaced cracks
● Regularly spaced missing chunks
● Dry rot
● Exposed cords or excessive fraying
● Oil or grease
If you suspect the belt needs replacing, please refer to
the Do it Yourself manual for the procedure or take
your boat to a Volvo Penta dealer.
Maintenance
47700385 05-2009 79
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