Onan generator 4000

[Wiggler]

How often or how many hrs before changing oil and filters? TIA

[Duckogram]

It has no oil filter. Change oil after 1st 20 hrs and then every 100 hrs or annually. Use 15w-40 diesel oil or straight 30w if you only use it in hot weather. It ships from the factory with 15w-40.
Air filter depends on the severity of service. While driving, annually will probably do. Dusty conditions, more often. I blew mine out and got two years out of it.

[Wiggler]

Originally Posted by Duckogram

It has no oil filter. Change oil after 1st 20 hrs and then every 100 hrs or annually. Use 15w-40 diesel oil or straight 30w if you only use it in hot weather. It ships from the factory with 15w-40.
Air filter depends on the severity of service. While driving, annually will probably do. Dusty conditions, more often. I blew mine out and got two years out of it.

Thanks! Tried to look up in owners manual and dvd that came with RV and no help there. Need to do it. it’s one year old with only 12 hrs. Thanks again!

[Duckogram]

Here is a link to the operators instructions: http://www.joshwakefield.com/xplorer...quiet-4000.pdf
Page 10 has the service schedule. I just noticed it reads 150 hrs between oil changes. I don’t remember where I found the 100 hr number but I have been using it for years without any problems. We are only talking about 30 minutes work and <2 qts of oil.

[Garrette]

You can go to the Onan website and download the owners manual specific to your unit.