How many hours on Onan Generator? Need help asap!

If you are using this as a commercial generator, I would suggest that since your income is related to it, I would go for a new one. If it is in an RV, then I would take the chance. First thing that I would ask the current owner is to allow me to have it load tested. Hire a company that does generator load testing to test the generator. They bring in a load bank and run the generator at maximum load. How long depends on you. It will show up quickly if the unit has a problem.

I've ran 4000W. construction generators 8 hours a day, 5 days a week for a couple years with no problem. You've got to think, why would the guy keep the genny if he thought it wasn't in good condition? I would probably go for it...

Gdetrailer wrote:
If your lively hood is depending on having dependable power than perhaps better to buy a new one instead of buying an unknown used one...

I agree. With no way to verify hours, it is just not worth the price. Kind of like buying a car with no odometer.

If your lively hood is depending on having dependable power than perhaps better to buy a new one instead of buying an unknown used one...

The unit starts and runs fine. It powers fine. It "looks" new. I am just worried about the hours. We are a high demand shop and run them 6-8 hours every day. Worried that it may already be wearing out.

Sorry, without having the hr meter there simply is no way to determine the amount of hrs the gen was run.

I would suggest that you find a way to have them DEMONSTRATE that the gen starts/runs AND MAKES ELECTRICITY.

Otherwise RUN as fast as you can away from it.

It isn't a good deal if it is dead as a door stop...