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    javajeff's Avatar
    javajeff Posts: 1, Reputation: 1
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    #1

    May 22, 2009, 02:18 PM
    Gas in crank case
    Troybilt lawn tractor - "Super Bronco" mower dies. I pull plug off crank case and a quart of gasoline/oil mix comes out. How is the gasoline getting into the crankcase?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    May 22, 2009, 05:53 PM

    Oil breather is broke.

    Usually replaceable from the outside of the block. Usually there is a hose to nowhere attached to it.

    Other possible reason is that the fuel valve is sticking because of being stored without any kind of fuel stabilizer for 3 months or more.

    Both can cause it. The former is a slow process. The latter is not.
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