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Re: B Carb leaking


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Dick L

02-11-2002 16:48:23

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I would guess you are still having problems with little specks of rust flakes. They could still be coming from the tank. These little specks can get hung up in the float valve, and power jet.
As for your mixture adjusting screw, This is an adjustment for idle only. At half throttle it is out of the system and can be removed without any affect. Get the idle adjusted and forgit that screw altogather. If you have a Marvel Shebler without an adjustment screw for the power jet you could have a flake of rust on the back side of the power jet and it might have to be removed to clear it. You could have the same problem even if it does have an adjusting screw. After a dose of rust flakes I have had to disassemble and clean a carburetor several times on more than one tractor. If the gas tank has not been taken off and really cleaned it would be best to install an inline filter between the tank and carburetor.

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Bryan Smith

02-12-2002 06:30:21

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 Re: Re: B Carb leaking - ideas? in reply to Dick L, 02-11-2002 16:48:23  
Many thanks. I'm not having fuel delivery problems at all so I don't think there's any blockage on the main jet. I'll look it over some more ....

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Dick L -- Just a story

02-12-2002 07:03:31

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 Re: Re: Re: B Carb leaking - ideas? in reply to Bryan Smith, 02-12-2002 06:30:21  
Year before last I had a Fri., Sat., and Sun. pull. The C took first place on Fri. I loaded the tractors and moved to the Sat. pull site and went home. Next morning gas was running out of the carburetor. Started it up and didn't run for sour apples. Pulled the carb off and washed it out with spray carb cleaner. I put it back on and it ran fine so I headed for the scales, before I got to the scales it started to sputter starving for gas. Took it back to the truck. Took the gas line off at the carb and had full flow there. I took the sedement bowl off and drained the tank, took the carb off and washed it out with the carb cleaner again. I put every thing back togather and it ran fine. Weighed the tractor in made the adjustments and was ready to pull dirty and a grease monkey and smelled like a gas tank.
Started down the track and the little C started to sputter again.
Loaded the tractors and took them home. Stopped by an Autozone and picked up an inline filter.
Sun morning early I went out and gas was running out of the carb, I cut the fuel line and put the filter in, took the carb off and took it apart, removing the jets, washed it out with the carb cleaner. I put the carburetor back togather and run about a gallon of gas through the fuel line before hooking it back up and that was the end of the fine rust flakes getting into the carbuertor.
I took second place on Sun. Got beat by a hopped up Avery.

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Bryan Smith

02-12-2002 08:38:42

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 Re: Re: Re: Re: B Carb leaking - ideas? in reply to Dick L -- Just a story, 02-12-2002 07:03:31  
OK, now I'm curious - doesn't the sediment bowl have a strainer on it that would catch much of this normally? Or are the strainer openings too large? I'm guessing from your experiences a rust particle or flake was obstructing fuel flow and keeping the needle valve from closing. Wonder if Phil's idea about the carb vent is my problem since I haven't found obstructions yet - now to find that little air vent bugger ...!


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Dick L

02-12-2002 09:04:17

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 Re: Re: Re: Re: Re: B Carb leaking - ideas? in reply to Bryan Smith, 02-12-2002 08:38:42  
The sediment bowl does have a strainer but is not as fine as the inline filters. I think the screen in that seditment bowl was not in the greatest condition at the time. I have lots of tractors and seem to not change screens and other parts unless they are giving me a problem. What I didn't put in my story was that I never saw the particals that were causing the problem, could be because of my age and not being able to get my trifocals in a position to see them, or as I took the carb apart the gas still in the carb washed them out as I took it apart. I keep a thin wire from a price tag in the truck to run through the power jet and air from my lungs to blow out the carb when at a pull.

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bill a

02-19-2002 03:10:11

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 Re: Re: Re: Re: Re: Re: B Carb leaking - ideas? in reply to Dick L, 02-12-2002 09:04:17  
i've got 45 had same problem last fall.rebuilt carb ,installed inline filter between bowl and carb.seemed to work ;no leaks runs good .used rubber fuel line to install filter

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