1960 5.5hp Johnson Base Gasket Part#? CD-17

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  • May 10, 2018 at 10:23 pm #9884
    joesnuffy
    Participant

      I changed the impeller in my CD-17 as luck would have it the base gasket ripped when I removed powerhead. I am glad I changed it the old one was a bit worn since you have to take off power head to change it.

      Does anyone know the part # for the power head base gasket for a CD-17? Also does anyone know the part # for the carbon wear ring that rides on the lower part of crankshaft? I think its carbon? Mine is worn but I could use it if a new one isn’t available.

      Thanks in advance,
      Joe

      May 10, 2018 at 10:34 pm #75722
      Mumbles
      Participant

        313065 is the P/N for the correct base gasket while 303391 is the carbon bearing, or seal.

        Attachments:

        May 10, 2018 at 11:13 pm #75729
        joesnuffy
        Participant

          Mumbles,

          Thanks for the info. Everything in the picture looks like what I have the top part 303355 is the part I am looking for it looks to be graphite or carbon not sure. I looked up 303355 and it looks to be made out of cork mine looks to be made out of a harder substance. I can get a pic and post it.

          Joe

          May 10, 2018 at 11:17 pm #75732
          frankr
          Participant

            US Member

            303355 is a soft gasket. The carbon seal is 303391.
            Amazing how stuff gets around. I put that picture together several years ago.

            May 10, 2018 at 11:19 pm #75734
            joesnuffy
            Participant

              Thanks Frank,
              I have the carbon seal 303391 and its o.k. Possibly someone put or made something else for 303355.

              Joe

              May 10, 2018 at 11:22 pm #75735
              joesnuffy
              Participant

                When I look up part 303365 it shows a prop nut? need a power head base gasket part number for a 1960 CD 17 not sure if that use to be the part#

                Joe

                May 10, 2018 at 11:51 pm #75737
                fleetwin
                Participant

                  US Member - 2 Years

                  313065 is the base gasket number…

                  May 11, 2018 at 12:35 am #75741
                  crosbyman
                  Participant

                    Canada Member - 2 Years

                    https://www.vintageoutboard.com/collect … hp-1959-64

                    vintage outboard.com has them

                    Joining AOMCI has priviledges 🙂

                    May 11, 2018 at 1:02 am #75748
                    frankr
                    Participant

                      US Member

                      Joe, make sure everything in that seal assembly is exactly as pictured and all in 100% condition. Failure of the seal can result in catastrophic failure of the powerhead due to water intrusion into the crankcase. Maybe not today, maybe not next month, but eventually.

                      May 11, 2018 at 1:36 am #75756
                      Mumbles
                      Participant
                        quote joesnuffy:

                        When I look up part 303365 it shows a prop nut?

                        Dang, I blew that one! 313065, not 303365. Sorry about that. 😳

                        Reminds me of when my OMC partsman told me how he ordered some parts once and one number he submitted had one digit wrong. Instead of a small part, an expensive gearset arrived instead. Guess he had some explaining to do to the boss.

                        FR: I liked your diagram so much you posted years ago that I had to keep it. I just hope there’s no copyright on it!

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