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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 28, 2022
When Onan went to the aluminum block on the Nhm’s and Bge’s they weighed around 270, the Cck weighed over 300 with the cast iron block and they had 3.5 quarts of oil and oil filters and ran at 1800 rpm’s.
The 4000 microlite weighs around 170, 1.6 quarts of oil no oil filter and runs at 3600 rpm.
I can’t help that they had to stay competitive.
I have a 4000 microlite and I’ve worked on few of each one of the generators.

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