Forum Discussion
427435
Apr 17, 2015Explorer
If an Onan 4000 generator, the correct way to check the oil level is with the plug/dipstick screwed in.
http://www.cumminsonan.com/www/pdf/manuals/981-0159D.pdf
http://www.cumminsonan.com/www/pdf/manuals/981-0159D.pdf
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