Kohler — Governor System Operation Test
Testing & diagnosis · Governor/stepper motor
From a Kohler service manual covering: 14/20RCA/RCAL, 14RCA, 20RCA, 26RCA, 26RCA/RCAL. Check it applies to your exact model before use.
Applies to: Kohler 14RCA, Kohler 20RCA, Kohler 26RCA, Kohler CH740 / CH1000 / CH1006 engine
Before you start
- Hazardous voltage. Moving parts.
Procedure
- Verify carburetor throttle linkage is connected to stepper motor.
- Check for broken or loose wiring or plug connections.
- Check stepper motor operation at startup (open then closed position).
- Open circuit breaker, disconnect starting battery, shut off fuel supply.
- Disconnect stepper motor plug P6 to access terminals.
- Check coil resistance across pins 2-3 and pins 1-4.
- Inspect linkage and bushings; replace as necessary.
- Disconnect linkage; verify free full range of motion.
Tools required
- Ohmmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Resistance per half coil 38.5 ohms
Full service-parts list: Kohler 14RCA →, Kohler 20RCA →, Kohler 26RCA →
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.