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Dyno · 11-01-2022, 08:48 PM

My 7.5 Onan diesel would run 3-5 minutes then shut off. If I let it sit a while, it would restart then shut off again. I thought it was a fuel filter issue. I opened the lower access door and found the water pump belt broken. I replaced the belt and it runs fine. It is a terrible job to do. Once you get to the belt, that was easy. Getting the top and side covers off and on was the hard part. My arms look like I was playing with barb wire.

11-01-2022, 08:48 PM	#9
Dyno Senior Member Join Date: Dec 2002 Posts: 920 Likes: 1,154 Liked 695 Times in 206 Posts	Re: Onan 7kw generator problem My 7.5 Onan diesel would run 3-5 minutes then shut off. If I let it sit a while, it would restart then shut off again. I thought it was a fuel filter issue. I opened the lower access door and found the water pump belt broken. I replaced the belt and it runs fine. It is a terrible job to do. Once you get to the belt, that was easy. Getting the top and side covers off and on was the hard part. My arms look like I was playing with barb wire.