Several years ago I was in Charlotte for the Points race and then the National Event the following weekend. At the points race my generator quit working. It would fire then die. It was flashing a code.
I found this web-site where there is a ton of knowledge for the Onan. After reading similar threads I tore the unit apart in KB's parking lot and replaced the rubber drive coupler that had cracked and broken from age. Lucky there was a Cummins dealer in Charlotte.
Might check these guys out.
https://www.smokstak.com/forum/forum...-generators.1/
Robin