Yanmar 1GM User Manual page 161

FUEL INJECTION AND GOVERNOR SYSTEMS 155
9
GOVERNOR ASSEMBLY
(1GM AND 1GM10 MODELS)
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1. Nut
2. Washer
3. Speed control lever
4. Bracket
5. Stop lever
6. O-ring
7. Spring
8. Snap ring
9. Timing gearcase
10. O-ring
11. Snap ring
12. Speed control shaft
13. Spring post
14. Secondary governor spring
15. Main governor spring
16. Snap ring
17. Washer
18. Control lever
19. Spring
20. Governor lever
21. Taper pin
Removal/Inspection/Installation
The governor components are contained in the timing
gearcase (Figure 42, typical). Refer to Figure 47 or Fig-
ure 48 for an exploded view ofthe governor mechanism.
1. Remove the timing gearcase as described in Chapter
Five or Six.
NOTE
Do not distort or damage the governor
spring.
22. Roll pin
23. Shaft
24. Start spring
25. Needle bearing
26. Roll pin
27. Shaft support
28. Lockwasher
29. Bolt
30. Taper pin
31. Governor fork
32. Thrust collar
33. Thrust bearing
34. Governor sleeve
35. Pin
36. Flyweight
37. Governor flyweight assembly.
38. Roll pin
39. Stop cam
40. Washer
41. Lockwasher
42. Nut
2. Carefully disconnect the governor spring (15, Figure
47 or Figure 48).
3. Check the governor shaft assembly for damage or
looseness. Excessive play can cause improper governor
operation. The shaft rides in bearings and should rotate
smoothly without binding. The pinned levers should be
tight on the shaft.
NOTE
Tapered pins secure the levers to the shaft.
Remove a pin by driving against the small
end ofthe pin.