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Engine runs for short period and cuts out.

The problem i have is that the engine will start and run but only for up to about 3 minutes max and then cuts out. I assumed fuel blockage and cleaned the carb out (twice), i have bypassed on/off switch also in case of possible fault. The machine although 2 years old has only about 60 to 80 hours use. After the engine cuts out it will start immediately with no problems.Sometimes it will partially cut out and then pick up, also quick use of the choke can prevent the engine cutting out but not always. One thing is the brass jet which is fitted in the base of the carb where the fuel exits the float bowl is jammed tight and will not move. The engine is a briggs and stratton vanguard 6hp single cylinder, model 117432.

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  • zeebo292 Jan 25, 2009

    Briggs quantam 6hp ...BRAND NEW.. runs for 1 minute or so...then 'chokes' out. Seems like it is not getting fuel.



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Check the fuel and air mixture screws when it is running .Turn them so it almost stops then start turning them until it runs smoothly

Posted on Nov 14, 2008

  • REKKER Nov 23, 2008

    Sounds like the feul air mixture could be set up wrong.Start it up and turn the screw till the moter starts to bog down some then turn it back alittle till it runs smoothly.Hope this will help You



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