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I have a craftsman lawn mower and having engine problems. It will not start. I have tried cleaning the carb and opened all orifices, checked float and main jet. Everything is clear. I put it all back together and tried starting. NOTHING! It will turn over if I spray starting fluid, runs 2 seconds and dies. Any ideas?

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  • David Burbee
    David Burbee Aug 06, 2010

    Hello! Tell me the year and engine size...Depending on information it may have a fuel pump...Disconnect fuel line at the carb. and crank the engine ...Do you have fuel? Send a comment... Guru......Saailer

  • Steve Aug 06, 2010

    Thanks for responding so quickly:

    It is a craftsman EZ3, 6.5 HP, Eager 1, 22" inch cut, self propelled gear drive. It starts with starting fluid, but only runs a few seconds. Fuel line appears to be gravity fed to the carb bowl, then a float keeps the fuel in check. Fuel and float are good to go. Thanks for your help!!

    Mower mod# 917.377271
    Engine# 143.976500

    I hope this helps. I have been racking my brain here to no avail

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Hello! Thanks for information...If you pull the fuel line going into the carb. and crank engine...Does fuel flow?...Saailer

Posted on Aug 06, 2010

  • David Burbee
    David Burbee Aug 06, 2010

    Hello! Replace the fuel bowl...They are noted for warping...Part #730235B...It's a kit and should solve the problem...Saailer

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Hi and welcome to FixYa, I am Kelly.

Carbs all have some minimal derbis in the float bowl. When an engine runs out of gas the float bowl cavitates and the debris that was just fine in the bottom of the float bowl is drawn into the main fuel jet located in the threaded area of the bowl nut. Remove the float bowl nut and bowl. Use carb cleaner to remove the debris from the main fuel jet orifice in the threaded area of the carb body.
(If the carb cleaner does not free the debris from the main fuel jet is can be unscrewed and removed for cleaning. Just make sure the screwdriver is a good fit to the brass slots of the orifice or you will never get it out.)
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