1974 6hp Evinrude

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  • November 5, 2015 at 2:53 am #2914
    nitehwk
    Participant

      Hello. I am reassembling a 74 Evinrude 6hp Fisherman power head. The service manual calls for OMC adhesive "M" to mate the crankcase cover to the block. Is there an alternative? Or is there something someone has used that works. With the split block on my mercury 9.8 i was told to use loctite 518. Should i use that?
      Thanks

      November 5, 2015 at 4:03 am #26567
      Casey Lynn
      Participant

        US Member

        3M 847 is the same as Adhesive M

        November 5, 2015 at 4:16 am #26568
        Mumbles
        Participant

          Try Permatex Anaerobic Flange Sealant P/N 51531 if you can’t find the other stuff. It’s basically the same as the OMC Gel Seal and works great on the crankcase flanges. If you are going to run the motor as soon as it’s together, 24163 Surface Prep should be used to speed up the cure time. Available at your favorite auto supply.

          November 5, 2015 at 2:16 pm #26581
          beerman57
          Participant

            I wouldn’t use type M / 347. Gel-seal or the Permatex stuff is what to use, and you can get it at NAPA and probably most other auto parts stores.

            November 5, 2015 at 2:34 pm #26584
            Buccaneer
            Participant

              US Member

              Could someone make the subject of "Sealants" a "Sticky thread",
              or what ever they call them. I’m often backtracking looking for
              the same information on what sealant is for what, or goes where.
              Unfortunately I’m a newbie to working on outboards, and in the
              past everything got Permatex 2!
              Thanks!

              Prepare to be boarded!

              November 6, 2015 at 1:01 pm #26649
              sedover
              Participant

                Yes, Gel Seal and the prep spray is the way to go. Either from a BRP dealer as Gel Seal or in the original guise from other as described. You can also buy a small vial of Gel Seal from most Johnson/Evinrude dealers.

                No Permatex #2.

                The Scotch (maker of M) does not hold up well with modern fuels.

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