Question about Briggs & Stratton Tools & Hardware - Others

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31HP on a stump grinder. Runs good than dies as if it is out of gas. Has all filters changed, valves set, new electric fuel pump. Fuel tank drained and washed out. Sometimes runs for hours, sometimes just a few minutes. Gas is good. Coil, and spark are good. Every B&S dealer has looked at it. Everyone thinks they fix but doesn't. Engine has appx 250 hrs on it. 120 PSI one piston, a little more on the other. It must be working on stumps to fail which is why no one can see the problem. When it quits, it will restart and run at idle, but not a working speeds. Next day it may run for hours, or just minutes. It is costing me business, and making me look foolish to my customers. Thanks, David 806-441-9472

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  • davgendc May 26, 2011


  • davgendc May 27, 2011

    I have spent over $750 trying to fix this engine, It is a Vanguard. I will change out the coils and let you know.



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Does this have the electronic ignition module, or the electronic coils???

My thought would be that you have the control module unit and there is a crazy circuit board problem in that....Don't think you have a fuel problem, it would be more predictable....what you have is an electronic problem...those darn electronic coils can drive ya nuts also...


Posted on May 26, 2011

  • D. Floyd Kolb
    D. Floyd Kolb May 27, 2011

    Those types of problems can be very frustrating and expensive....a new engine looks to be somewhere around $2500.00 so to this point you are well under a new engine...


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Has anyone checked the valve clearance on the engine?

Also, sometimes simple things will make the engine perform intermittently. Try running it without the gas cap on when it has died. It could be a clogged gas cap so the engine is not ventilating.

Handie Andie

Posted on May 23, 2011

  • Handie Andie
    Handie Andie May 26, 2011

    Yes, If there is nothing wrong with the engine, the next step would be to look at the cutter you're using. How often do you sharpen or change the teeth? Are you using carbide teeth, etc.

    I'd like to suggest checking out these two websites. The first is info on a good cutting wheel and the second is the US dealer if you're in the US and are interested: >>>> <<<<
    >>>> <<<<

    Please copy and paste these web addresses into your browser to view.

    Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

    Handie Andie



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