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I changed the air filter, pre-filter, fuel filter, and installed a new fuel line on my 6.0 HP B&S, self-propelled walk behind. Now after running the mower it leaks gas out of the carb into the air filter housing. It looks to be coming right out of the carb. Any ideas why this is happening? The leak is not coming from the new fuel line. Thanks for the help. Jim L

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Sounds like the float valve is sticking open. You will have to drain the gas (or at least turn off the valve where the gas leaves the tank if so equipped.) Then remove the bowl to clean the float valve. (There is usually a nut in middle of the bowl.) The bowl looks like a bowl, and is about 2 inches in diameter. When you remove it you will see the float, which probably looks like a little brass donut. If you remove the hinge pin that allows the float to move up and down (it only moves about 1/2 inch) you will then allow the valve pin to fall out. The valve pin is about 3/4 inches long and maybe 3/16 diameter. (I am not measuring these things, just giving approximate dimensions so you will recognize them when you see them.) Good luck, Al K

Posted on May 19, 2011

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