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  1. Shade Tree Mech

    Riding Mower Sudden Revs High In Low Throttle

    A Briggs Engine Model 331877-1371-B1 was running fine. It was shut down to refuel and upon start up it revved very high and lowering the the throttle produced very little change. With the throttle control in low, I can manually push the butterfly plate/linkage against the idle adjustment screw...
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