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  1. E

    12.5hp briggs and stratton air/fuel mixture problem

    Hi everybody! My briggs and stratton has been annoying me lately. When it runs, it hunts when at half throttle or higher and when I turn the air/fuel mixture screw to stop the hunting it does absolutely nothing. Also if I try to make it idle slow it starts to hunt and then eventually shuts off...
  2. E

    12.5hp Briggs and Stratton powerbuilt popping problem

    Hi everyone! My Briggs and Stratton has had a popping problem for a while. It starts up fine and runs fine, but it always pops no matter what speed the engine is running at. I have cleaned the air filter, replaced the spark plug, cleaned the carbuerator bowl,replaced the needle valve and...
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