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My lawn boy 6.5hp mower isblowing fuel out of the muffler

My lawn boy 6.5hp commercial rated mower is blowing fuel out of the muffler... whats up with that??

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  • Anonymous Mar 15, 2014

    how to bleed lawn mower fuel lines



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Maybe it's a stuck float valve or a bad float. Had a similar problem on a TORO rider but that turned out to have a pin hole in the brass float, it filled up with gas and let just about the hole tank through the muffler. I changed the brass float and still running to this day! Note: your float may not be brass if it is a newer machine it will be plastic.

Posted on Oct 01, 2009


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Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
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but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please do not forget to rate me, Thanks
Good Luck, I hope this helps

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