Engine Tune-Up
Fig. 9 - Adjusting Booster Spring
retaining nut on the speed control lever. Loosen the lock nuts on the eye bolt at the opposite end of the booster spring.
3.
Move the spring retaining bolt in the slot of the speed control lever until the center of the bolt is on or slightly over
center (toward the idle speed position) of an imaginary line through the bolt, lever shaft and eye bolt. Hold the bolt and
tighten the lock nut.
4.
Start the engine and move the speed control lever to the maximum speed position and release it. The speed
control lever should return to the idle position. If it does not, reduce the tension on the booster spring. If the lever does
return to the idle position, continue to increase the spring tension until the point is reached that it will not return to idle.
Then reduce the tension until it does return to idle and tighten the lock nut on the eye bolt. This setting will result in the
minimum force required to operate the speed control lever.
5.
Connect the linkage to the governor levers.
Page 104
