GOVERNOR AND INJECTOR RACK CONTROL ADJUSTMENT
and turn the inner adjusting screw of the adjacent
injector rack control lever down until the injector rack
moves into the full-fuel position. 'Turn the outer
adjusting screw down until it bottoms lightly on the
injector control tube. Then alternately tighten both the
inner and outer adjusting screws.
Over tightening of the injector rack
control lever adjusting screws during
installation or adjustment can result in
damage to the injector control tube. The
recommended torque of the adjusting
screws is 24-36 in. lb.
10. Recheck the rear injector rack to be sure
that it has remained snug on the ball end of the rack
control lever while adjusting the adjacent injector rack.
If the rack of the rear injector has become loose, back
off the inner adjusting screw slightly on the adjacent
injector rack control lever and tighten the outer
adjusting screw. When the settings are correct, the
racks of both injectors must be snug on the ball end of
their respective control levers.
Figure 5. Adjusting Idle Speed
11. Position the remaining injector rack control
levers as outlined in Steps 9 and 10.
Adjust Engine Idle Speed
Make sure the stop lever is in the run position and place the speed control lever in the idle position.
With the engine operating, loosen the locknut and turn the idle speed adjusting screw (Fig. 5) in or
out until the engine idles at the recommended speed. The recommended idle speed is 550 rpm. However, the
idle speed may vary with special engine applications.
Hold the idle speed adjusting screw and tighten the locknut.
Adjust Maximum No-Load Speed
With the engine running, move the speed control lever to the maximum speed position. Use an
accurate tachometer to determine the no-load speed of the engine.
Do not over speed the engine.
Loosen the locknut and adjust the maximum speed adjusting screw (Fig. 6) until the required no-
load speed is obtained.
Hold the adjusting screw and tighten the locknut.
Adjust Buffer Screw
With the engine running at idle speed, turn the buffer screw in (Fig. 7) so that it contacts the stop