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Onan Carburetor [message #371449]

Wed, 19 July 2023 05:13

Bruce Hart

Messages: 1500
Registered: October 2011
Location: La Grange, Wyoming

Karma: 5

Senior Member

Has anyone found a replacement carb for the 6k Onan?

Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming

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Re: Onan Carburetor [message #371450 is a reply to message #371449]

Wed, 19 July 2023 09:07

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Bruce,
I am curious. Why do you need to replace the carburetor? Most of what happens is easily repaired.
The carburetor is a Walboro LMB. There are lots of Ebay, but those may not be identical and may require some work to make correct.
I know you can get them from Cummins/Onan, but a new generator may be less expensive.
Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: Onan Carburetor [message #371451 is a reply to message #371449]

Wed, 19 July 2023 09:23

RF_Burns

Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada

Karma: 3

Senior Member

I'm an electronics guy so I was looking at going EFI with something like this once my carb and or choke solenoid gives up.

https://ecotrons.com/small_engine_fuel_injection_kit/400cc_to_800cc_engine_fuel_injection_kit/

I believe for our engines the kit works out to about $300. USD.

Wally Anderson built his own EFI intake manifold using MicroSquirt.

But that's just me...

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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Re: Onan Carburetor [message #371452 is a reply to message #371449]

Wed, 19 July 2023 12:33

rgogan

Messages: 82
Registered: February 2004
Location: Milwaukee, WI

Karma: 0

Member

I have posted this info previously that might help your situation:

The most challenging problem was the Walbro LMB 185 carb. Experienced more problems with erratic operation that did not improve with a carb rebuild kit. Still suspecting it was a carb problem, I sprayed light oil on the carb and intake manifold gasket and had a sudden change in the RPMs. Checked the intake manifold gasket and found it was not leaking. Finally found that the shaft of the butterfly throttle had worn out the bushing in the housing. I was lucky enough on Ebay to find an unused carb that had been sitting on an inventory shelf for 40yrs. It was a LMB 181 and externally was identical to the original Onan carb. I purchased and installed it, and despite all my previous problems, I am in love with this generator again. The operation is unbelievable smooth and power has been restored. Hardly any RPM change when both roof A/Cs kick in. This is even with the electric water heater in operation. Does anyone rebuild or rebush the throttle shaft?

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Re: Onan Carburetor [message #371453 is a reply to message #371449]

Thu, 20 July 2023 07:13

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

I bought an Onan for a promotions van that had fuel injection. V twin engine vertical, alternator vertical, belt drive between them. It was offered with carb, or for a hundred extra injected. The difference between it and our carbed Onans was instant start in any weather, and it burned a bit less gas. Interestingly, the warranty was determined by use. RV belts warranted forever, commercial belts two years. Their definition of an RV was if it had a bathroom it was an rv.

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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