Kohler — Generator Frequency Change (60 Hz to 50 Hz)
Adjustments · Microcomputer Circuit Board
From a Kohler service manual covering: CSG-649, Cummins 4B, Cummins 6B, Ford CSG-649, Ford LSG-423, Ford LSG-875, LSG-423, lsg-875. Check it applies to your exact model before use.
Applies to: Ford CSG-649, Cummins/Onan LSG-423, Cummins/Onan lsg-875
Procedure
- On Microcomputer equipped generators, snip the jumper indicated in Figure A1 to convert from 60 Hz to 50 Hz.
- Check frequency meter for a no load reading of 63 Hz for 60 Hz operation and 53 Hz for 50 Hz operation.
- If equipped with isochronous governor, check for 60 and 50 Hz operation at no load.
- If no frequency meter, connect meter across VO and V7 on control board terminal strip (set must not be running while making connection).
Tools required
- Frequency meter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 63 Hz (60 Hz no load)
- 53 Hz (50 Hz no load)
Full service-parts list: Ford CSG-649 →, Cummins/Onan lsg-875 →
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.