8 mm Governor Lever and Hole Position/RPM Chart for CH18 Engines
Governor Shaft
Conīæguration
Intended Maximum RPM
Non-Accelerator Pump
Carburetor
Accelerator Pump Carburetor
High Idle WOT Spring Color Hole No. Spring Color Hole No.
Needle Bearing
3744 3600 Orange 2 - -
3120 3000 Clear 1 - -
Standard (Parent
Material)
3888 3600 Blue 4 Purple 3
3780 3500 Orange 3 Black 3
3672 3400 Clear 4 Red 3
3564 3300 Blue 3 Orange 2
3456 3200 Purple 2 Blue 2
3348 3100 Black 2 Orange 1
3240 3000 Red 2 Black 1
3132 2900 Green 1 Red 1
3024 2800 Blue 1 Clear 1
Governor Lever Hole Position (6 mm)
H
A
G
F
E
D
C
B
A Governor Lever B Governed Idle Hole
C Hole 1 D Hole 2
E Hole 3 F Hole 4
G Hole 5 H Hole 6
6 mm Governor Lever and Hole Position/RPM Chart
High Idle RPM
Gov. Lever
Hole No.
Governor
Spring Color
Code
3801-4000 5 Clear
3601-3800 4 Clear
3451-3600 3 Clear
3301-3450 2 Clear
3101-3300 4 Purple
2951-3100 3 Purple
2800-2950 2 Purple
3750* 3 Clear
3150* 3 Purple
*5% Regulation (others 10%)
Governor Lever Hole Position (8 mm)
A
E
D
C
B
A Governor Lever B Hole 1
C Hole 2 D Hole 3
E Hole 4
Reassembly
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24 690 06 Rev. JKohlerEngines.com