ENGINE
ADJUSTMENTS
NOTE:
WESTERBEKE recommends
that
the
following engine
adjustments
be
perfonned by a competent engine mechanic.
The
information below is provided
to
assist the mechanic.
ENGINE
SPEED
(HERTZ)
ADJUSTMENT
Governor
The
belt-driven, mechanically operated governor maintains
the engine's rpm under various load conditions. Engine speed
determines the hertz and voltage output
of
the generator.
Governor
Adjustments
Operate the generator to bring the unit up to operating
temperature before adjusting the governor.
NOTE:
If
the governor
is
severely out
of
adjustment, manually
adjust the linkage at no-load
to
obtain a safe output voltage
before proceeding with the adjustment.
There are three adjusting points on the governor
(see illustration).
1.
Increase/Decrease
Speed Adjustment. This adjusting 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 lube for this purpose. Disconnect the ball joint
and apply graphite lube
to
the inside
of
the joint.
2. Hunting/Regulation Aqjustment.
If
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 bolt may need
to
be
adjusted as well.
If
the governor surges under load, adjust this eye bolt to
move
the
spring away from the lever hub (check speed
adjustment).
3. Bumper
Screw
Aqjustment. This screw is used to remove
a no-load surge
ONLY.
NEVER tum the bumper screw
into the governor so far that it increases the no-load speed.
Governor
Maintenance
·
1.
Periodically lubricate the linkage arm attaching points at
the governor
arm and throttle lever. Use a graphite
lubricant
or
equivalent.
NOTE:
Free
movement
of
this linkage ann is important for
proper governor/throttle operation.
2. Governor Oil Capacity: 3 ounces SAE IOW/30 oil.
(Synthetic oil
is
recommended)
NOTE:
Do not
overfiJl
the
governor.
3.
To
change the oil, remove the oil
fill
plug. Place a small
container
tinder the governor and remove
the
governor
drain
plug.
Allow the oil to completely drain. Replace the governor
drain plug. Then remove the
alle~
head oil fill level plug
located on the back
of
the governor. Fill the governor
with three ounces
of
oil
or
more until oil
·starts
to flow
out
of
the oil
fill
level opening. Replace the allen head
plug and the oil
fill
plug.
LINKAGE
ARM
KEEP
LINKAGE
WELL
LUBRICATED
THRO
TILE
LEVER
HUNTING
.
REGULATION
ADJUSTMENT
INCREASE/DECREASE
SPEED
ADJUSTMENT
4.
Periodically adjust the governor belt tension (see DRIVE
BELT
ADJUSTMENTS). Since belts stretch slightly, this
stretching will, to some degree, affect the governor's
action.
Engines & Generators
28
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