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MopaRV's avatar
MopaRV
Explorer
Apr 08, 2022

Onan Microlite 4000 shaft locks up on occasion

I have an Onan Microlite 4000 generator and the shaft locked up when I powered off. This is a new issue and it runs fine otherwise. Oil level is fine. I broke the shaft free with a wrench on th...
Kpackpackkelley's avatar
Kpackpackkelley
Explorer II
Apr 27, 2022
If it has a ridge at the top you’ll have to get it reamed if it still runs good and makes electricity.
You can look on YouTube and see ridge on cylinder wall and how they ream them and it may be in your service manual.

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