Kohler — Voltage Regulator Adjustment - CC
Adjustments
From a Kohler service manual covering: 10C, 10CC, 10CFC, 10CFZ, 12C, 12CFC, 12CFZ, 40CZ, CZ/12-Lead. Check it applies to your exact model before use.
Applies to: Kohler 10C, Kohler 12C, Ford VSG-411 (10 kW) / VSG-413 (12 kW) engine
Before you start
- Heat sink contains high voltage.
Procedure
- With set off, turn remote rheostat to mid-point.
- Turn voltage, Volts/Hz, and stability pots fully counterclockwise.
- Start set; rotate voltage pot to desired output voltage.
- Rotate stability pot clockwise until minimum light flicker.
- Install jumper on governor -2.5Hz/Freq terminals.
- Rotate Volts/Hz pot clockwise until voltage begins to drop.
- Remove jumper from governor circuit board.
- Readjust voltage and stability pots if necessary.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Cut-in frequency 57.5 Hz for 60 Hz; 47.5 Hz for 50 Hz
- Voltage adjustment range 100-130 FridayParts $30.67 V
Full service-parts list: Kohler 12C →
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.