Question about Watts Onan Portable Generator - 4000 , Model# 5500

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I have a Onan Microquiet 4000 in my Motorhome. It sat for a while and then I was unable to start it. I took off the carb and thoroughly cleaned it. The generator fired right up after that, it runs great under no load for about 20-30 seconds, then stmbles two or three times and resumes running great for another 20-30 seconds and starts the whole stumbling thing all over again. I also noticed that under the load of the AC unit it stumbles quite consistantly. Any help would be apreciated, Thanks

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Sounds like the float is out of adjustment, it's not keeping the bowl filled.If the float is not at correct height or the bowl was not placed back in the correct position it could show these symptoms , some bowls have a small indent on them and that recess should clear the float for proper movement of float. Or check to make sure that you have no water in fuel tank. Good Luck...

Posted on Apr 01, 2011

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Posted on Jan 02, 2017

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