| Re: Daniel's Onan [message #369558 is a reply to message #369533] |
Mon, 25 April 2022 16:02   |
AndrewCudlipp
Messages: 3
Registered: June 2021
Location: Bremerton, WA
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Carl S. wrote on Thu, 21 April 2022 19:35It still is not quite right, adjusting the main jet screw on the carb didn't make any difference no matter how far in or out it was adjusted, and adjusting the governor rod didn't increase the RPMs any noticeable amount. Voltage under load is now at about 118.5 and frequency is at 57 HZ. But for now, it's good enough to be functional.
I will keep in mind the admonition to NOT use any fuse over 5 amps.
That is not good. You are missing a very important seal inside the carburetor bowl. Unlike a Briggs & Stratton carb or any other small engine, the ONAN carb needs a gasket/washer/seal underneath the bolt head for the carb bowl AND INSIDE the floatbowl. It should look like this
[bolthead] |(fiber washer)---|(carb bowl flange)---|(second fiber washer)------threads of the bolt-------
I used a 7/16 I.D. nitrile Oring from a standard oring kit. Your generator is running extremely rich without this very crucial seal. It is funny because the original power drawer manual does not show this seal in the parts blow-apart-diagram but does mention it on the troubleshooting procedures.
When running rich like this the generator can do some funny things... my friend's was icing up the carburetor and intake manifold a shocking amount before we repaired it.
Also, running this rich can easily foul the spark plugs and lower the compression from the fuel washing out the cylinder walls. You may find the generator is hard to start, or will putter out.
Hope this helps... sorry for my terrible diagram. Once you get that seal sorted out the generator SHOULD STALL OUT with the main jet adjustment turned all the way in.
- AC
Super excited to be here!
1976 Eleganza II
1977 Eleganza II
1978 Royale (Moms)
[Updated on: Mon, 25 April 2022 16:05] Report message to a moderator |
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