Kohler 4.5 CKM — Separate Excitation of Generator
Testing & diagnosis · Generator rotor/stator
For the Kohler 4.5 CKM, from the Kohler service manual.
Applies to: Kohler 4.5 CKM, Kohler KT17II engine
Before you start
- Battery gases can cause an explosion. Do not smoke or permit flame or spark near battery.
Procedure
- Disconnect all leads from voltage regulator.
- Connect an ammeter and a 12-Volt automotive battery to the positive (+) and negative (-) brush leads.
- Ammeter reading should approximate battery voltage divided by specified rotor resistance.
- Start engine and check that ammeter remains stable; increasing reading indicates shorted rotor.
- Check for AC output across stator leads and compare to Table 6-2.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 12 Volts / 4.6 Ohms = 2.6 Amps (rotor current)
Full service-parts list: Kohler 4.5 CKM →
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.