Kohler L600 / L654 — Governor Adjustment
Adjustments · Mechanical governor
For the Kohler L600 / L654, from the Kohler service manual.
Applies to: Kohler L600 engine
Before you start
- If one governor setting is readjusted, the other should also be readjusted.
Procedure
- With plant running at full load governed speed, check speed with hand tachometer or frequency meter.
- Speed range: loosen locking nut on speed adjusting screw, turn screw clockwise to increase speed/frequency or counterclockwise to decrease, then lock nut.
- Sensitivity (droop): to make control more sensitive, loosen nut at bottom of adjusting eye bolt and tighten top nut drawing eye bolt head closer to governor arm pivot point.
- To make control less sensitive, loosen top nut and tighten bottom nut to move eye bolt head away from pivot point.
- Tighten the previously loosened nut to lock the eye bolt, then recheck speed since sensitivity adjustment affects speed.
Tools required
- Hand tachometer or frequency meter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.