I'll join this thread, although I don't have any solutions; more questions actually.
In early September on my way to the BAC to the future rally, I was running my generator on a hot day. Sitting in a Walmart it shut itself down - code said overheat and service required. No loss of fluid and oil pressure good. Let it sit for a few hours and it started up and ran. It also started and ran well the next morning.
Long story short, I assumed all was well, BUT one shouldn't assume! Coming home last Sunday, i tried to start it (by coincidence the same Walmart) and it will not run for more than a few seconds - 20 tops. Fault code shows service required and secondary fault is 13 which is low output voltage.
I am puzzled as it dies before I think it can produce any voltage. The manual says to shut off the breaker and try - no difference. It seems to just stop as if running out of fuel (lots there). Batteries good.
Read a previous post started by Dave Cunningham; I contacted Dave and he suggested (as mentioned by Bill) to try the boost. While the genset turns over faster - I think there may also be an issue here with starting voltage - it does not stay running even if the boost is held down.
While not necessary, I have even tried the priming procedure and while it may run for a couple of seconds longer, there is no fundamental difference.
I have an appointment for a coach service and I am going to have the tech see if there is anything obvious. If all else fails I guess I have to take it to the cummins/onan service in Winnipeg. I do note that the motor is a Kubota and as i have 3 Kubota tractors, i may give my Kubota dealer a call - the Beaver will look odd in their yard sitting beside the combines, tractors etc.
Thanks,
Jeff