Figure 4-12. Magneto and governor installation.

TM 5-4320-234-12

1. Magneto

2. Throttle rod

3. Nut

4. Ball joint

5. Throttle operating lever

6. Mounting screw

7. Surge adjusting screw

8. Governor spring

9. Speed adjusting lock screw

10. Speed adjusting screw

11. Sensitivity adjusting screw

12. Ground strap

13. Mounting screw

Figure 4-12. Magneto and governor installation.

b. With the engine warmed up and with the pump

between the engine speed under load and the engine

speed without load. To broaden the range of action, use

not under load, adjust the engine idle speed to

the sensitivity adjusting screw (11). Lengthen the

approximately 150 rpm higher than the required idle

sensitivity adjusting screw to broaden the range of

speed under load. Make this adjustment by turning the

action of the engine. Compensate for speed Changes

speed adjusting screw (10). Back out speed adjusting

by readjusting the speed adjusting screw (10). To

lock screw (9) so that it will not influence the adjustment.

c. The governor's range of action is the differential

narrow the range of action, shorten the sensitivity

4-25