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Thread: Prop shaft

  1. #1

    Default Prop shaft

    Hello new here.Could someone tell me how to take out the prop shaft on a 7.5 Mercury outboard motor?I need to check the seals.Thank you

  2. #2
    Join Date
    Oct 2018
    Location
    Mobile, Al
    Posts
    44

    Default Re: Prop shaft

    Check out this video by Dangar Marine. This guy is awesome & very helpful.

  3. #3
    Join Date
    Oct 2018
    Location
    Mobile, Al
    Posts
    44

    Default Re: Prop shaft

    Quote Originally Posted by Kch View Post
    ...I need to check the seals.Thank you
    Hey, it occurred to me after posting my last reply that you may not need to disassemble the lower unit to do what you want. Have you tried just pressure testing the lower unit? You should be able to pressurize it & see if it holds the pressure. Don't quote me on this, but I think 10-15 PSI is all you need to test the seals. If it holds any length of time, the seals are ok. Just don't pump them up to some ridiculous pressure & blow the seals! Here again is a video from Danger Marine showing the process.

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