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  1. J

    Bronco 42 in. mower with a Briggs & Stratton31P777-0293-E2 engine running rough

    I started this season with empty fuel tank and carb. Put in new gas, new oil, new filters ( oil,fuel, air ). Runs very rough, with occasional billow of white smoke. Replaced oil with oil / reslone mix, new fuel again with Lucas cleaner mix, new plug. Still running very rough with billowing white...
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