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Running engine with boat out of water

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  • Running engine with boat out of water

    I have a new (40 hours) Yamaha 4 stroke 90 hp outboard.

    I have used the hose fitting on the left side of the engine to run fresh water through the engine, but have not run the engine with this as a source of cooling water. Can I? It would simplify running fuel out of the engine, and fogging it for winter storate.

    With only 40 hours on the engine, should I change the lower unit gear lube, and, or, engine oil before shutting down for the winter.

    Thanks

    Gordon

  • #2
    You can run engine on Flush Attachment at idle speed only

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    • #3
      The impeller wears very fast when running dry.

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