I think I know the answer already, but wanted to post in case I missed something related to Onan service secrets... I have had a problem with the gen shutting down after short runs - load or no load....
When the fuel pump went in our 4000 KY, it just quit. We were driving down the road with the generator running. Wife was trying to heat something in the microwave and it cut off about 30 seconds after she started the microwave. Couldn't restart the generator. If I recall correctly, we had an error code of 34, which I'm pretty sure meant take it to a shop. It was under warranty and the dealer replaced it. No problems since then. That was 7 years ago, about a month after we bought it.
-Michael
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