Kohler — Rectifier-Regulator Test (12/15 amp)
Testing & diagnosis
From a Kohler service manual covering: KT610, KT620, KT715, KT725, KT730, KT735, KT740, KT745. Check it applies to your exact model before use.
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Procedure
- Connect tester ground lead (with spring clamp) to body of rectifier-regulator being tested.
- Connect tester red lead to B+ terminal of rectifier-regulator and 2 black tester leads to 2 AC terminals.
- Plug tester into proper AC outlet/power. Turn on power switch. POWER light should be illuminated.
- Press TEST button until a click is heard and then release. Momentarily 1 of 4 status lights will illuminate indicating condition of part.
- If OK (green) light comes on and stays steady, part is good and may be used.
- Other lights come on: rectifier-regulator is faulty and should not be used.
Tools required
- Rectifier-regulator tester Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.