Hal, does the Kohler manual specify any stator test beside no load output voltage ??
I ask because of a bit of a head scratcher I had to deal with last winter. The landlords JD 318 would not charge (low volt light on ). (Onan engine wit nearly identical charging system) First thing I checked was battery voltage to the regulator and the rectifier / regulator both checked OK. I checked the stator AC voltage which was well within specs, but no charge to the battery ???
Just on a hunch, I switched my VOM to ohms and checked from a stator lead to the motor case, it indicated the stator winding was shorted to ground !!! The old stator had oily grass clippings packed in one spot that overheated and shorted the stator winding to the stator frame. I replaced the stator and all was well. Lesson learned, check the stator for output voltage AND short to ground. Normal isolated output voltage alone does not mean the stator is good.
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