Service Manual
GOVERNOR
ADJUSTMENTS
In order to obtain the best performance from the
equipment it is essential that the governor lever, low
and high idle speeds, choke and speed control
cable be adjusted properly.
Symptoms of improper adjustment are: excessive
loss
of engine speed under load, engine stalling,
no-load speed surging, poor starting and spark plug
fouling.
The equipment Owner's Manual
will
specify the low
and high idle speed settings for optimum perform-
ance. Always set engine speed with an accurate ta-
chometer. Never exceed the high speed setting
specified by the equipment manufacturer.
The order of adjustments in this section
MUST
be
followed in order to obtain proper adjustments. The
order is as follows:
1.
Governor Lever Adjustment
2.
Idle Speed Adjustments
3.
Choke Adjustment
4.
Speed Control Cable Adjustment
1.
Governor Lever
Adjustment
Refer to Figure 9-5. The proper angular relationship
between the governor lever and the governor shaft
is essential for obtaining the
full
range of engine
speed/load performance. The position of the gover-
nor lever should be readjusted whenever the intake
manifold is reinstalled after removal for service.
Governor Lever Removal:
The governor lever on
Spec C gasoline engines is secured to the tapered
governor shaft with a nut. On LPG and Spec A and
Spec
B
gasoline
engines the lever is clamped
around the straight shanked governor shaft with a
draw bolt and nut. Before removing the lever, stop
the engine and disconnect the throttle link and gov-
ernor spring. For Spec
C
gasoline engines use a
standard battery cable clamp lifter available at any
automotive parts store to break the tapper fit be-
tween shaft and lever hub.
Governor Lever
Adjustment: The
engine must be
stopped to assemble and adjust the lever.
1.
Loosely assemble the governor lever and shaft
so
that the lever is free to rotate about the shaft.
2.
Attach the throttle link between the governor le-
ver and carburetor. Replace the nylon clips
if
they are
worn
or broken.
3.
Attach the governor spring, move the throttle
control lever to align the lock pin holes in the
control plate and throttle control lever and in-
sert a pin
to
lock the lever in place.
See
Figure
4.
Check to see that the governor spring is hold-
ing the carburetor throttle plate in the wide
open position.
5.
For Spec C gasoline engines tighten the lock
nut on the end
of
the governor shaft making
sure the 'governor shaft rotates clockwise
against the internal governor parts, and torque
to specifications. For LPG and Spec
A
and
Spec
B
gasoline engines
use
a flat-bladed
screwdriver to rotate the governor shaft clock-
wise
against the internal governor parts while
tightening the lever draw
bolt.
6. Remove the
lock
pin to release the throttle con-
trol lever and proceed to the next adjustment.
9-6.