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Governor Adjustments
Operate the generator set to bring the unit up to
ITS operating temperature before attempting an adjustment.
NOTE: If the governor is severely out of adjustment, manually adjust the linkage without any
load on the generator to obtain a safe output voltage before proceeding with the adjustment.
Three adjusting points are on the governor. (Refer to the illustration below.)
1. Bumper Screw This screw is used to
remove a no-load surge ONLY.
NEVER turn the bumper screw into the
governor far enough so that it increases
the no-load speed. To adjust the gover-
nor, turn the bumper screw in until the
engine stops surging. Now bring the
Increase/Decrease Speed Screw (on
the governor) up until the generator
runs between 60.5 to 61.5 cycles no-
load. Apply a 1/4, a 1/2 and a 3/4 load
to the generator and ensure the gener-
ator does not surge under these three
load intervals.
NOTE: Only If the generator surges
at any of these load intervals are
you to follow steps #2 and #3
below.
2. Increase/Decrease Speed This adjust-
ing bolt sets the no load speed of the
engine. (The linkage arm between the
governor arm and throttle lever should
be adjusted to hold the throttle full open
when the engine is not running.) Make
sure this linkage moves freely and that
the ball joint connectors are properly
lubricated.
Use graphite lubricant at
this connection.
Disconnect the ball
joint and apply a graphite lubricant to
the inside of the joint.
3. HuntinglBeculatjQo !f the variation in
engine speed between no load and full
load is too great, adjust this eye bolt to
draw the spring closer to the lever hub.
The increase/decrease speed boll may
need to be adjusted as well.
BCG 6.5KW Governor
INCREASE/DECREASE SPEED SCREW
CARBURETOR THROTTLE LEVER
BCG 4.0KW Governor
LIIUA6E
ADJUSTMENT
CARBURETOR THROTTLE
IIDJUSHtEKf
INCREASE/DECREASE
SPEED SCREW
If the governor surges while under a load, adjust this eye bolt to move the spring away from the lever hub.
(Check the speed adjustment.)
Westerbeke Generators
74
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