Home Forum Ask A Member 1957 Mercury Mark 10

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  • #299174
    Aidan Smith
    Participant

      US Junior Member

      Hello!

      I have accepted a new challenge, a Mark 10. As someone who has only worked on OMC motors, I understand that this era of Mercs is a more difficult breed to work on.

      While it has great spark, I do know that it needs to have the impeller replaced. Would anyone be able to point me in the direction of where I need to start? Where would I be able to locate a service manual, and the correct tools?

       

      Thanks,

      Aidan

      "Shells sink, dreams float. Life's good on our boat."
      1921 Elto Light Twin
      1923 Evinrude Model N Sportwin
      1929 Evinrude N1 Folding Sportwin
      1931 OMC Fold-Light
      1956 Johnson JW-12R

      #299184
      seakaye12
      Participant

        US MEMBER PAY BY CHECK

        Hi Aidan,

        I can share several PDF Mercury Manuals if you want to PM me your e-mail address.

        They are very large files;  large enough to require use of a file transfer service for me to send them to you  (They are loo large to go through most e-mail systems.)

        File transfer services are free.  I use WETRANSFER.

        Working on Automatic transmission Mercurys is easier than many people make it out  to be….yet way harder than other people make it out to be.  It would be great if:

        1. Your motor is not a salt water motor.
        2. You have someone locally to you that has done it before and can be there with you on the first attempt.
        3. You have access to the special tools that Mercury supplied for these repairs…..or are able to make your own tools.
        1 user thanked author for this post.
        #299185
        Aidan Smith
        Participant

          US Junior Member

          Seakaye,

          Thank you for being willing to share your resources. I have some connections with more Mercury-based people who may be able to give me a hand. From what I can tell, this motor has not been a saltwater motor, as there are no visible signs of corrosion on the powerhead, or body at all. Just typical paint fading and wearing. I don’t have any tools, but if I can make them, I certainly will.

          Aidan

          "Shells sink, dreams float. Life's good on our boat."
          1921 Elto Light Twin
          1923 Evinrude Model N Sportwin
          1929 Evinrude N1 Folding Sportwin
          1931 OMC Fold-Light
          1956 Johnson JW-12R

          #299208
          seakaye12
          Participant

            US MEMBER PAY BY CHECK

            Seakaye,

            Thank you for being willing to share your resources. I have some connections with more Mercury-based people who may be able to give me a hand. From what I can tell, this motor has not been a saltwater motor, as there are no visible signs of corrosion on the powerhead, or body at all. Just typical paint fading and wearing. I don’t have any tools, but if I can make them, I certainly will.

            Aidan

            The PDF’s will show the tools and how they are used.  Hopefully someone you know has the tools;  no point in re-inventing the wheel.

            The pic shows the home-made tool fabricated from a piece of galvanized pipe.

            1 user thanked author for this post.
            #299251
            labrador-guy
            Participant

              US MEMBER PAY BY CHECK

              Aidan this topic had been discussed  in this web sight before.  It would be a good idea to do a search before you dive in.  Take pictures!  Lay the motor down on its back before you take the cover off.  The shifting paws are behind that cover and they will fall out if you take the cover off with the motor up right.  The paws are a mystery to get back in properly.

              dale

              get’em wet…don’t let’em set!

              #299271
              Tubs
              Participant

                 

                I make tools from time to time, some for the two KF-7’s I’ve had. None were as elaborate as yours. Pretty sophisticated work I’d say. I’m impressed!!!

                A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

                #299289
                green-thumbs
                Participant

                  US MEMBER PAY BY CHECK

                  Mercury Parts Manuals tell you the part name and numver and illustrates where each part of a compnent goes. In some cases it indicates a change and at what serial #.
                  My lucky day was the day I acquired a Parts Clerks set of
                  Mercury parts manuals. Service Manual and Service Tools are a good begining. Nothing replaces
                  experience.
                  Good Luck

                  #299305
                  seakaye12
                  Participant

                    US MEMBER PAY BY CHECK

                    Tubs….the pipe in the picture is the home-made tool.  Those other three are genuine Mercury tools…..

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