Kohler — Voltage Regulator Calibration
Adjustments · Voltage regulator board
From a Kohler service manual covering: 10/15RMOY, 10RMOY, 15/17.5ROY, 15RMOY, 15RMY, 15ROY, 17.5ROY, 22.5-47.5ROZ, 22.5/32.5RZ, 22.5ROZ, 22.5RZ, 24ROZ…. Check it applies to your exact model before use.
Applies to: Kohler 15RMY, Kohler 15ROY, Kohler 17.5ROY, Kohler 22.5ROZ, Kohler 22.5RZ, Kohler 24ROZ
Before you start
- DANGER OF ELECTROCUTION! High voltage present when set is running.
Procedure
- Disconnect generator from load. Place main switch OFF.
- Check wire jumpers on regulator board per Table 3-1.
- For single-phase, lift lead V9 and insulate.
- Connect AC voltmeter and frequency counter between V7 and V8.
- Start generator with no load.
- Adjust Pot. 2 for specified output voltage.
- Observe LED; adjust Pot. 3 and Pot. 1 for steady glow.
- Seal pots with insulating varnish.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Kohler 15RMY →, Kohler 15ROY →, Kohler 17.5ROY →, Kohler 22.5ROZ →, Kohler 22.5RZ →, Kohler 24ROZ →
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.