Can't Identify Sample/Test engine on my mower. It's a Kohler

20141011_160648.jpgI've searched and can't find a database for the spec # or serial. Can anyone enlighten me as to what powerplant I have here. I'm thinking around the 26hp range but I'm just guessing. BTW, I'm looking for some parts (rectifier/regulator, radiator hose) because it isn't charging.

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