Operator`s manual

Governor/Fresh Water/Sea Water Pump Bell Tension
Never attempt to adjust the drive belt's tension while the engine is in operation.
CAUTION
Excessive governor and water pump drive belt tension can cause rapid wear of the belt and
reduce the service
life of the fresh water pump and governor shaft bearings. Excessive slack
or the presence of oil on the belt can cause belt slipping, resulting in high operating tempera-
tures, as
well as poor regulation during generator load changes.
The governor and water pump drive belt is properly adjusted if the belt can be deflected no less than 3/8
inch and no more than 1/2 inch
(10 mm, 12 mm) as the belt is depressed with the thumb at the midpoint be-
tween the
two pulleys on the longest span of the belt. (See the figure below.) A spare drive belt should be
carried on board.
Governor
Sea Water
Pump
Westerbeke Generators
Belt Deflection
3/8 - 1/2 inch
Fresh Water
Puznp Pulley
Front Crankshaft
Pulley
Governor/Fresh Water/Sea Water Pump Belt Tension
46