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09-14-2020, 08:11 AM
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#1
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Member
Join Date: Mar 2020
Posts: 43
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Onan 5500kw fuel bowl
Does anyone know how the fuel bowl comes off? Does the whole bowl turn to come off or do u have to remove the altitude slide off and screw out the main jet? I have gummed up gas in it.
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09-14-2020, 08:36 AM
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#2
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Senior Member
Join Date: Jul 2014
Posts: 35,420
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There is typically a bolt in the bottom center that holds the bowl. Could also be a the anti run on solenoid holding it.
Never seen one that screwed on.
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09-14-2020, 03:46 PM
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#3
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Senior Member
Join Date: May 2010
Location: Part-time out of Mesquite, TX
Posts: 1,103
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09-20-2020, 08:58 PM
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#4
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Senior Member
Join Date: Apr 2013
Location: Tallahassee, Florida
Posts: 200
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Which 5.5kw is it? Onan made several.
On the newer style they have a fuel cutoff solenoid on the bottom that bolts into a fitting that then holds the bowl on. In mine, I have to pull the carb off almost all the way to unscrew it because I can't get to the screws. Totally removing it easier, but make sure to are careful with the springs and rods and know where they were.
Also be careful to not loose the small copper washer that goes inside the float bowl, other wise your genny will not run right when you are done.
__________________
2017 Thor Windsport 34J -The Hammer
2021 Jeep Wrangler Unlimited 80th Anniversary- Toad
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09-21-2020, 04:02 AM
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#5
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Member
Join Date: Mar 2020
Posts: 43
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Quote:
Originally Posted by apr67
Which 5.5kw is it? Onan made several.
On the newer style they have a fuel cutoff solenoid on the bottom that bolts into a fitting that then holds the bowl on. In mine, I have to pull the carb off almost all the way to unscrew it because I can't get to the screws. Totally removing it easier, but make sure to are careful with the springs and rods and know where they were.
Also be careful to not loose the small copper washer that goes inside the float bowl, other wise your genny will not run right when you are done.
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model 5.5 BGMFA26105H
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09-21-2020, 11:42 AM
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#6
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Dec 2014
Location: Northeast Ohio
Posts: 478
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I have that model and have removed the bowl too.
I adjusted the altitude knob to sea level zero and then gently pried the adjustment knob down to remove. Then removed the main jet on the bottom by unscrewing it counter clockwise. Bowl pulls off straight down.
Be careful of the sealing washer on the main jet and try not to turn the fuel mixture screw in the main jet. Be careful of the float assembly with pieces parts, I reused the sealing washer and bowl gasket. Reverse to re-install and pop the adjustment knob back on at zero.
It's pretty much like any outdoor power equipment once you remove the altitude knob.
__________________
2000 Fleetwood Southwind 32V - Ford F53 V10 6.8L 208"WB 20,500 GVWR
2022 Palomino Puma Destination 39FKL
Of all the things I have lost, I miss my mind the most.
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09-22-2020, 04:10 AM
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#7
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Member
Join Date: Mar 2020
Posts: 43
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Quote:
Originally Posted by Randalpho
I have that model and have removed the bowl too.
I adjusted the altitude knob to sea level zero and then gently pried the adjustment knob down to remove. Then removed the main jet on the bottom by unscrewing it counter clockwise. Bowl pulls off straight down.
Be careful of the sealing washer on the main jet and try not to turn the fuel mixture screw in the main jet. Be careful of the float assembly with pieces parts, I reused the sealing washer and bowl gasket. Reverse to re-install and pop the adjustment knob back on at zero.
It's pretty much like any outdoor power equipment once you remove the altitude knob.
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Thank you. This is the answer I was looking for. I have a gasket kit ordered for this carb. Now I can get the bowl off and clean the crap out of it. Thanks again!
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09-22-2020, 05:45 AM
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#8
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Senior Member
Join Date: Apr 2013
Location: Tallahassee, Florida
Posts: 200
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Quote:
Originally Posted by Randalpho
It's pretty much like any outdoor power equipment once you remove the altitude knob.
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I never had to remove the altitude knob to drop my bowl.
__________________
2017 Thor Windsport 34J -The Hammer
2021 Jeep Wrangler Unlimited 80th Anniversary- Toad
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09-22-2020, 11:08 AM
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#9
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Dec 2014
Location: Northeast Ohio
Posts: 478
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Quote:
Originally Posted by apr67
I never had to remove the altitude knob to drop my bowl.
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What year and model do you have? I have this exact model including the "H" rev level, mine is a 2000 model year.
If you fast forward to the 2:00 minute mark in the video, you will see the knob is around the bottom fuel jet/needle and needs to be removed.
__________________
2000 Fleetwood Southwind 32V - Ford F53 V10 6.8L 208"WB 20,500 GVWR
2022 Palomino Puma Destination 39FKL
Of all the things I have lost, I miss my mind the most.
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09-22-2020, 11:16 AM
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#10
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Senior Member
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Mar 2013
Posts: 466
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Inline fuel shutoff
Just to prevent buildup in the off season, I installed a fuel shutoff valve and run it dry like my lawnmower at season end.
__________________
2008 Fleetwood Southwind
W22 Workhorse Chassis 8.1L Chev Vortec
Allison 1000 transmission
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09-23-2020, 03:40 AM
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#11
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Member
Join Date: Mar 2020
Posts: 43
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Quote:
Originally Posted by ramblinboy
Just to prevent buildup in the off season, I installed a fuel shutoff valve and run it dry like my lawnmower at season end.
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From my experience doing that tends to dry out the seals. Also the rubber seat on the float needle. I put a good dose of Starbrite blue gas treatment in the tank. It keeps the gas fresh for the winter months. I use it in all my small engines. Sold at Napa. They also make it for diesel fuel.
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09-23-2020, 04:08 AM
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#12
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Senior Member
Join Date: Jul 2014
Posts: 35,420
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Quote:
Originally Posted by Technoid
From my experience doing that tends to dry out the seals. Also the rubber seat on the float needle. I put a good dose of Starbrite blue gas treatment in the tank. It keeps the gas fresh for the winter months. I use it in all my small engines. Sold at Napa. They also make it for diesel fuel.
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Today's carb parts don't use rubber anymore, since synthetics were developed, so the parts do not dry out.
Almost every carburator is vented to atmosphere, so the gas in it will evaporate out of the bowl, leaving the parts exposed to air in a short time. Conditioner doesn't fix that.
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09-24-2020, 04:26 AM
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#13
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Member
Join Date: Mar 2020
Posts: 43
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Quote:
Originally Posted by twinboat
Today's carb parts don't use rubber anymore, since synthetics were developed, so the parts do not dry out.
Almost every carburator is vented to atmosphere, so the gas in it will evaporate out of the bowl, leaving the parts exposed to air in a short time. Conditioner doesn't fix that.
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That never happened with my small engines. Always find gas in the carb bowls. The treatment also coats it. That 60 gallon tank in a winterized motor home needs treatment to if you store it. I dont think you can fully empty that tank. And doing so can damage the fuel pump. I have a boat and adding fuel treatment is a must. It doesn't hurt to treat gasoline keeping it fresh.
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09-24-2020, 05:19 AM
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#14
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Senior Member
Join Date: Jul 2014
Posts: 35,420
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So you treat everything and I have never treated anything.
Boats, RVs, small engines, and cars stored for months at a time, without any treatments. No problems.
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