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output coupling

  1. Transmission output flange fell off Yanmar 2QM15 - Theories re: why?

    Gear & Maintenance
    Hello, I recently had the output coupling from my Yanmar 2QM15 transmission fall out while underway (we didn't hit anything), disconnecting the prop shaft as a result. I'm in the process of undergoing repair, but I'm concerned that I may only be addressing the symptoms without isolating the...
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