Re: Briggs 11 hp won't run

Posted by Robert on April 27, 2004 at 15:58:50 from (199.245.220.253):

In Reply to: Briggs 11 hp won't run posted by Jerry Seilhamer on April 27, 2004 at 12:19:44:

I have some limited experience with Briggs, and, it sounds as if your problem is fuel related.
You said it was running, then quit, now only backfires through the carburetor. With that information, if it were mine, I'd begin by carefully pulling the carburetor, dismantiling, then try to see what the fuel level is in the bowl. While there, I'd check to make sure the float hasn't developed a pin hole, allowing it to become "heavy", thereby not shutting fuel off---essentially flooding the engine. Depending on the type carburetor you have, there's probably a mixture adjustment screw. On my 8 hp Briggs, there's a nozzle located beneath the screw---you have to remove the screw, then screw out the nozzle, to clean passages.
There's also a fuel "pump" of sorts on these things, that works off the valve pulses somehow, and to find if there's a problem in this area, look to where the rubber tube goes (I'm talking about the tube that's on the air cleaner)follow the routing, and take the cover off, make sure the little diaphragm isn't cracked, or has trash behind it.
I don't think your problem is major, just frustrating. The fuel is most likely okay. I haven't found fuel to deteriorate over the course of a winter, but it would be easy enough to drain and refill.
I hope this is of some help. Good luck!

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