Here is the results and prints with pictures if this guy's work after digging out the plastic around a AVR.
First post here at smokstak. I found this forum while doing research on my new to me but very old JC Penny 5000 watt generator. It's made by Generac and has a 10 HP Briggs side valve engine. The voltage regulator board is identical to the MC-40 PCB posted here. There is only one part...