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  1. #1
    Silver Member
    Join Date
    Jul 2013
    Posts
    143
    Location
    WA
    Tractor
    Yanmar YM1700D

    Default Yanmar sitting outside in rain, exhaust uncovered!

    I am worried because my tractor is sitting outside in heavy rains, and the exhaust is not covered. I am out of state right now, and cannot get back to it for a week or so. It will ultimately be stored under cover, but the rains came early and heavy. There has been nearly 3 inches of rain. What can I expect has happened from the heavy rain, and what can I do to remedy it once I get back?

  2. #2
    Super Member California's Avatar
    Join Date
    Jan 2004
    Posts
    5,725
    Location
    Sonoma County
    Tractor
    Yanmar YM240, YM186D, and another YM186D

    Default Re: Yanmar sitting outside in rain, exhaust uncovered!

    I expect these things get dunked once in a while in the rice paddies - and that is why they have a compression release.

    I would remove the exhaust manifold (4 bolts) and pour the water out of the exhaust. (Its gasket is usually re-usable). Then USE THE COMPRESSION RELEASE to spin it and blow any water out of the cylinders, before cranking it under compression - incompressible water can shatter a piston or bend a rod.

    Then maybe change the oil if it looks milky.

    I doubt you've hurt anything.

  3. #3
    Silver Member
    Join Date
    Jul 2013
    Posts
    143
    Location
    WA
    Tractor
    Yanmar YM1700D

    Default Re: Yanmar sitting outside in rain, exhaust uncovered!

    The exhaust does have a 90 degree bend at the top, but rain doesn't always come straight down.

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