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Country Discussion Topics
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Lawn Tractor gas leak
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Tractor guy    Posted 05-03-2004 at 08:47:26       [Reply]  [No Email]
I have an Murray lawn tractor with a 14HP Briggs engine. I can't get the carb to stop leaking!! It seems to be coming out from the top of the bowl and sometimes it is worse that others. I think it means that the needle valve is not seating properly. How do I correct this? Thanks in advance.


Clipper    Posted 05-03-2004 at 11:46:54       [Reply]  [No Email]
I have restored more than a few OLD Farmall tractors....all have updraft carbs on em....few years ago I eliminated a major problem with the carbs: that of the carbs gumming up. Solution? A gas additive known as StaBil....keeps the carbs clean,eliminates gumming,and prevents the gas from goin bad. Just mah 2 cents worth... :^)


Tractor guy    Posted 05-03-2004 at 11:01:39       [Reply]  [No Email]
Thanks for the input, got it stopped FOR NOW!!! I think it was the needle not seating correctly, it was clean but it is an odd shape so has to fit perfectly. I assembled the carb upside down so that the needle was seated the whole time and when I turned it over to install I tried to not disturb it's position and it seemed to work. Thanks again guys.


Tech1    Posted 05-03-2004 at 09:54:23       [Reply]  [No Email]
Try tapping on the carb when it is leaking. Sometimes this will help the float valve seal up if it's gummed up and prevent excess gas from flowing into the bowl and running out. If this works you may want to run a little carb cleaner through the fuel system or disassemble the carb and clean thoroghly.


rhouston    Posted 05-03-2004 at 09:41:51       [Reply]  [No Email]
just had a similar problem with a 4 horse briggs. It appeared that the bowl was leaking. come to find out there is a plastic elbow that attaches the gas line to the carb, It had a hairline crack in it. The gas would weep out onto the bowl and gas line. Best of luck


Wisereader    Posted 05-03-2004 at 09:24:32       [Reply]  [No Email]
You may have to take the carb bowl off to see if the float is stuck, or if the needle (not needle valve, but part that attaches directly to float) and float are no longer attached. Make sure that you get a new bowl gasket (get a few), you'll need it when re-assembling. I'm sure other ideas will follow.


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