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Old 11-01-2019, 11:12   #1
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How change oil in installed generator - no access?

Hi everyone,
I have a Jeanneau Sun Odyssey 469. It has a Cummins Onan generator set installed just forward of the transom. The operator's manual for the generator says to change the oil, remove the front cover of the generator and there is a valve at the bottom where you drain the oil out. However, that front cover is facing the transom and there is only about three inches of clearance. So I can't figure out any way to get the cover off to access the drain.
Anyone ever had to change the oil on a setup like this? How did you do it?









Many thanks,
'Dubs
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Old 11-01-2019, 11:19   #2
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Re: How change oil in installed generator - no access?

Vaccum oil extractor via the dip stick tube. There are a bunch of different makes & models. Handy for many other things on a boat too.

https://www.amazon.com/slp/best-oil-...hagxfusm5sz83f
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Old 11-01-2019, 11:34   #3
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Re: How change oil in installed generator - no access?

Thanks Belize. I checked the manual and it says the dipstick is that big yellow knob, which means I'd need like a 1" hose or something to connect. It doesn't look like the small opening like on my Yanmar motor dipstick. On my Yanmar I use that small dipstick hole to suck the oil out but not sure that would work here?
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Old 12-01-2019, 10:59   #4
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Re: How change oil in installed generator - no access?

You use a small tube on the extractor 1/8 ID is fine and shove to bottom of engine - connect to vacuum extractor.
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Old 12-01-2019, 14:30   #5
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Re: How change oil in installed generator - no access?

With a robust hose or it will collapse under vacuum
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Old 12-01-2019, 15:31   #6
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Re: How change oil in installed generator - no access?

use an extractor and wait a long time for the pump to suck it all out
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