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It will start and almost immediately stop. It's A Briggs & Straton Quatum XNP 6.5.

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  • Eddie McKelvey Apr 07, 2011

    Thanks for your help I will keep you posted

  • Eddie McKelvey Apr 07, 2011

    Dear helpmech, It worked !!! Thank you for your help . This is a great website. Sincerely, Eddie Mac



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First confirm that Oil, gas, spak plug and air filter are good. Also check the bowl bolt. The jets feed through the center of this bolt, there is a tiny hole in the center, that feed from two more holes near the base of the bolt head.If the hole is clogged or plugged it will not let the engine to start and run.You can use a small jet drill to clear the hole. The brass jet on the bottom center of the carburator float bowl gets clogged with sediment.When you take it off a bread tie wire & come carburetor cleaner are all you need to clean the jet. Take care when putting on the bowl as the sealing gasket (large o-ring) must seal perfectly otherwise the primer bulb will squirt fuel out of the bowl instead of priming the carb .A 5/16", 3/8" & a 1/2" socket (& ratchet) carburetor cleaner & bread tie or garbage bag tie wire are all you need to complete the repair. It helps if you drain the gas tank before you begin. Or you can just pinch off the line with a vice grip. ---------- Drain the float bowl - it's possible that a drop of water has found it's way in, blocking the jet. While the bowl is off, check that there is a decent flow of fuel.
These engines are prone to breaking the inlet pipe that runs across the top of the cylinder from the carb to the inlet port. This will cause similar symptoms of it is cracked.
--------- This should help.Keep updated.Thanks.Helpmech.

Posted on Apr 07, 2011

  • raj somaiya Apr 07, 2011

    Thanks for the update.Helpmech.



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