Kohler Comand Pro CH1000 Service Manual page 45

1. Carburetor Body
Subassembly
2. Idle Speed Screw
3. Idle Speed Spring
4. Screw
5. Ground Lead
6. Retaining Washer
7. Slow Jet - RH Side
8. Slow Jet - LH Side
9. O-ring (Slow Jet) (2)
10. Fuel Bowl
Figure 5-35. Keihin BK Two-Barrel Carburetor - Exploded View.
Governor
General
The governor is designed to hold the engine speed
constant under changing load conditions. Most
engines are equipped with a centrifugal fl yweight
mechanical governor. The governor gear/fl yweight
mechanism of the mechanical governor is mounted
inside the crankcase and is driven off the gear on the
camshaft . This governor design works as follows:
11. O-ring (Fuel Bowl - Upper)
12. O-ring (Fuel Bowl - Lower)
13. Drain Screw
14. Bowl Screw (4)
15. Fuel Solenoid
16. Sealing Washer
17. Float
18. Pin
19. Screw
20. Float Clip
21. Float Valve/Inlet Needle
• Centrifugal force acting on the rotating governor
gear assembly causes the fl yweights to move
outward as speed increases. Governor spring
tension moves them inward as speed decreases.
• As the fl yweights move outward, they cause the
regulating pin to move outward.
• The regulating pin contacts the tab on the cross
shaft causing the shaft to rotate.
Fuel System and Governor
22. Main Nozzle - Right Side
23. Main Nozzle - Left Side
24. Main Jet - Right Side
25. Main Jet - Left Side
26. Choke Dust Cap
27. Choke Shaft
28. Spring
29. Bushing
30. Choke Lever
31. Choke Plate
32. Choke Plate Screw (2)
Section 5
5
5.15