I'm heading to the Onan website to see if there is an adjustment I can make to bring that voltage down towards 110. It will also be a good time to find out how many hours I should be running it between servicing it-
I like about 125vac at no load so I can hope to maintain a reasonable level when at full load. I think 120v is optimum and hopefully it never drops below 115v, but that's just wishful thinking in a lot of cases.
With some if not all generac gensets, there's a LED on the voltage regulator board, along with the adjustment screw and I drilled a hole in the cover so that I can see it, as it doesn't always have an output and requires restarting. Just saying, in case you feel the need to see this light as well.
