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Old 01-13-2004, 07:55 PM   #21
art
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thank you steve Plastow isnt far from me Ill check that out
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Old 01-19-2004, 05:39 PM   #22
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I have worked on a few Onans lately and find the LP model the easiest to get going after a long time off. LP is the cleanest burning of all. I suggest you fog the cylinders real good with fogging oil as you slowly turn over and let set overninght so you will not score the cylinders. Check to make sure you have spark the next day and then turn her on. I got two going and it wasn't that bad. No carb jets to mess up and after she started running checked the Freq and Voltage and still using them. Only reason power on LP units is a little less is due to the caloric content of the fuel compared to equivilent gasoline. Good Luck
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Old 03-15-2004, 07:25 PM   #23
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Onan Exercise

Ran the Onan hard a couple of weeks ago, and there was a bit of a "search" for the proper voltage for about 15 minutes.

Has anyone else had an Onan "straighten up" after some excercise? I know it needs to be run for a couple of hours each month, and I think we will need to run the AC on the run down to Gonzales in a couple of weeks.

One thing for sure, in a couple of months it will HAVE to work on a continueing basis.
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Old 03-15-2004, 09:12 PM   #24
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Dennis,
Mine hunts for the first 2 - 15 minutes...then it settles into a groove. I've been working on getting my mixture right as it seems fine for hours then "loads" up and hunts again or dies.

I've been pulling the plugs and they seem to show a pretty rich mixture even when I turn down the idle mixture to almost a stall.

Just a little fine tuning until we get these Onans purring before summer!
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Old 08-01-2005, 04:09 PM   #25
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Yes I realize this post is over a year old but I have a question concerning it. My 6.5 Onan is a propane. This weekend it popped and stopped. Since my LP gauge said I better get some more I just thought I was low on fuel. I filled up today and the generator will not start. I do smell propane and it does fire but then it shuts down and will not even turn over all I get is a click from the solenoid. The battery is fully charged reading 12. 9. I play with the switch and then the starter engages but the generator does not start. Once or twice when i pushed the switch all I got was a backfire out of the exhaust. Do I need the little black boxes? If I do where do I find them? Are they behind the starter switch?

Oh, yes and to add to this the heater/AC fan on the dash went out. We drove home with no AC. My wife says she likes the idea of vintage classic motorhomes but I did hear mumblings of Winnebago and Bounders for many hot stuffy miles.
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Old 08-01-2005, 07:03 PM   #26
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Let me add to my post from before the situation here is tenous at best. We have a trip planned this weekend to the wife's brother- in- law. I overheard the dreadful word- "sofa bed" Guys I must get this generator working so we can have AC and take Chummy. I have not even looked at the dash AC fan yet.

I dug deeper and found five black things with wires which were scorched, a good sign on an engine that does not start. When I hit the starter these wires arc. How do I get these out? What are they? Is this my problem? Pictures attached. you can see the burned wires in the front. These are attached to the black things which I can see no way to take out and replace.
I added the arrow to the picture to show where the acing occurs.
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Old 08-05-2005, 11:30 AM   #27
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Well $575 worth of labor and parts got my generator working just fine. Needed a tune up, a regulator, some seals and interesting enough it had the wrong oil filter on it. I hate to say it but the last people to service this gen set were the same guys who put the wrong oil filter on my engine. They also supposedly did a tune up as well. I think I'll take them to small claims court just for spite.
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Old 08-05-2005, 11:33 AM   #28
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Man oh man Kent! At least your all ggood to go now!
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Old 08-05-2005, 01:35 PM   #29
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On a sillier note...

OK, I'm going silly at work here on a Friday afternoon.

Isn't there anyone else here who gets sophmoric humor from the long, earnest discussions about Onans? Who in their right mind would ever name an electrical generator after a notorious Biblical sin incident? It's somewhat akin the British vacuums that "really suck" and selling the Chevy "Nova" (Spanish for "doesn't go") in Mexico. Sheesh!

When your Onan breaks down, just don't start drawing Lots ...

Oh, I'd better get back to my statistical report before I get too far down the rabbit hole...

Mary
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Old 08-07-2005, 05:49 PM   #30
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Quote-"Isn't there anyone else here who gets sophmoric humor from the long, earnest discussions about Onans? Who in their right mind would ever name an electrical generator after a notorious Biblical sin incident?"

I simply can not let this go unanswered. Onan is a wonderful name for a generator. This a machine with pistons which continously pump and spew out electricity. There is no act of consumation, fullfillment, conception, or even true mechanical satisfaction since the pistons must continue pumping.
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Old 06-25-2007, 04:19 PM   #31
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Quote:
Originally Posted by swebster
Finally, finally, finally fixed the Onan. Turned out to be a low oil pressure switch. $7.65 at the Onan store and she was running like a top. Turned on as many things as I could and let her run for a good two hours.

What a relief to have this one checked off on “THE LIST”
I can't believe that I'm still having problems with my genset.
Where exactly is the low oil pressure switch?

Thanks,
PMHO (pulling my hair out)

aka: Kevin
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Old 07-09-2007, 06:31 PM   #32
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I found a cool source for info on "Antique Onan" generators HERE "Sparks and Arcs"
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Old 07-09-2007, 07:31 PM   #33
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Quote:
Originally Posted by outofcontrol
I can't believe that I'm still having problems with my genset.
Where exactly is the low oil pressure switch?

Thanks,
PMHO (pulling my hair out)

aka: Kevin
I found the low oil pressure switch, and along the way I found a manual posted online:
Onan Service Manual for BF/BFA/BGA/NH: 900-0337: Page 49
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Old 07-10-2007, 01:33 AM   #34
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Ok, I'll shut up now...I figured out the problem when I pulled the carb. Thing runs like a champ now. I think a picture says 1,000 words in this case.
-KM
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Old 07-10-2007, 07:26 AM   #35
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I've heard that those "boy" carbs have a way of clogging things up.Looks like that one got hot and excited.
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