Kohler — Separately Excite — RZ Models
Testing & diagnosis · Generator rotor/stator
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
- EXPLOSIVE GASES! Locate auxiliary battery at least 18 inches above floor.
Procedure
- Disconnect and insulate V7, V8, V9, VO and V4.
- Disconnect and insulate L1, L2, L3.
- Disconnect exciter leads F1 and F2.
- Place voltmeter across F3 and F4.
- Connect ammeter in series with F3.
- Start unit and read battery voltage.
- Check L1, L2, L3, V7, V8, V9, VO, V4 for 25-35 volts output.
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.