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I have a yard machine 42''lawn tractor. It has a 17.5 hp B&S engine that floods seconds after starting. I have to blow the carb out with shop air several times to get it running. Once it is successful, it will be ok for rest of mowing that day. The gas literallt puddles up in the air filter tray when it floods...HELP!

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Hi Clarence,

Sounds like the float sank. Seriously.

Under the carb is what looks like small cup held on at the bottom by a single bolt. This is the float bowl.

If there is a gas valve turn it off.
If not pinch the fuel line with vice grips or something.

If you smoke, don't. Gas is going to spill out.
Unscrew the bolt
Pull off the bowl.
You'll see a hollow copper ring. That's the float.

Pull it
Empty it.
Solder it

Put the whole thing back together

Thats it

Best regards

Posted on May 08, 2010


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