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winterizing a Yamaha 15 hp 4 stroke

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  • winterizing a Yamaha 15 hp 4 stroke

    Good morning. I plan to winterize this motor myself for the first time since buying it new in 2003 so I want to make sure I don't miss anything and was hoping someone can help me out. I have run fuel with stabilizer through the engine for 10 minutes or so and drained the gear oil. I am going to buy new gear oil today to fill it back up (SAE90?). I have fogging oil, but am unsure of the best way to get that into the cylinders...through the carb, or remove the plugs and spray it in there?

    Also I am concerned all the water is not out of the motor....I blew compressed air through the main line where I usually attach my hose when running it out of water...will that be enough?

    Thanks again and I appreciate any suggestions

  • #2
    Re: winterizing a Yamaha 15 hp 4 stroke

    TTT

    I'm wondering the same thing, I know it's a little late, but the motor has been in a heated building, and now has to go outside
    2010 Stanley Mink 18DC "Silver Moose" with a 2015 115HP Evinrude

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    • #3
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      Re: winterizing a Yamaha 15 hp 4 stroke

      Sounds like you have done everything needed, maybe change the engine oil while you are at it.

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