SOLVED – 1957 RDE-19 manifold / petal valves

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  • August 19, 2026 at 3:25 pm #326735
    Ghost_n_the_shell

      Good day folks.

      I have the manifold cover off the 1957 RDE-19 35hp.

      How the heck does this come off?
      Is this stuck on an alignment dowel or something?

      Love some advice on how not to break this.

      Cheers

      August 19, 2026 at 3:50 pm #326739
      JACQUES
      Participant

        try a thin edge spatula or  thin knife edge with brisk tapping and the plate should  split  off…  tap other locations around the rim as the plate pryes off

        Joining AOMCI has priviledges 🙂

        August 19, 2026 at 4:05 pm #326741
        Ghost_n_the_shell

          I can slide a putty knife all around it – and it’s very tight at the top.

          I will try a little PB blast to boot.

          Thanks for the reply

          August 19, 2026 at 6:07 pm #326748
          JACQUES
          Participant

            probably stuck from old adhesive   some  limited heat  may release it… did you suspect reeds to be a problem   enough to pull them ??

             

            ” If it works don’t fix it”  they say.

            Joining AOMCI has priviledges 🙂

            August 19, 2026 at 7:43 pm #326751
            Ghost_n_the_shell
              JACQUES wrote:

              probably stuck from old adhesive   some  limited heat  may release it… did you suspect reeds to be a problem   enough to pull them ??

               

              ” If it works don’t fix it”  they say.

              I’m not sure if they work or not.
              This motor has never run.

              At this point I am tearing it down, splitting the case, and trying to rebuild it step by step.

              I’m treating this particular motor as a place to learn how to repair / disassemble these things, because I want to keep fixing these old motors as a hobby.

              I do appreciate the advice though.
              I understand that if these things work, it’s best not to mess with it.

              August 19, 2026 at 8:13 pm #326752
              JACQUES
              Participant

                be warned… very addictive hobby.   🙂 at 76 I am now stuck with  4   4hp J&E   1 Merc  3.9hp     2 x4 HP mercs( one is  a sail boat XL)    1x6hp fisherman  one 5.5hp CD   a 9.5hp Sportwin a  7.5HP  Merc  one TN27 5hp and a what seems to be  a 1.5HP Elto egg beater

                 

                all winter restoral projects  to spend time in the basement   and not enough time  or occasions to run them all. But everytime I see a bargain I cringe.

                Joining AOMCI has priviledges 🙂

                August 19, 2026 at 8:38 pm #326757
                Bob Wight
                Participant

                  US Member

                  I can’t tell for sure what’s happening in your picture but there is a retaining screw in the middle of the reed plate that needs to be removed.   I can’t tell if you removed that screw or not because it’s covered up with some kind of gunk.  If not already removed, that screw needs to come out to get the reed plate off.   See attached markup of your picture.

                  IMG_8210-scaled.jpeg-copy

                  Bob

                  1937 Champion D2C Deluxe Lite Twin
                  1954 Johnson CD-11
                  1955 Johnson QD-16
                  1957 Evinrude Fastwin 18
                  1957 Evinrude 3022
                  1958 Johnson QD-19
                  1958 Johnson FD-12
                  1959 Johnson QD-20
                  1982 Evinrude 25hp

                  “Every 20 minute job is only a broken bolt away from a 3-day project.”
                  "Every time you remove a broken or seized bolt an angel gets his wings."

                  August 19, 2026 at 11:01 pm #326766
                  Ghost_n_the_shell

                    Hmm. No I haven’t taken a retaining screw out of there. It’s actually corroded in that spot specifically.

                    I’ll hit it with some cleaner / penetrating oil and that sit for a bit.

                    August 20, 2026 at 12:13 am #326769
                    Bob Wight
                    Participant

                      US Member

                      After enlarging the picture, I can make out the corroded head of the slotted screw.   Clean up the rust, apply some penetrating oil and a little heat if needed.  Once the screw is out, you’re in business.

                       

                      Bob

                      1937 Champion D2C Deluxe Lite Twin
                      1954 Johnson CD-11
                      1955 Johnson QD-16
                      1957 Evinrude Fastwin 18
                      1957 Evinrude 3022
                      1958 Johnson QD-19
                      1958 Johnson FD-12
                      1959 Johnson QD-20
                      1982 Evinrude 25hp

                      “Every 20 minute job is only a broken bolt away from a 3-day project.”
                      "Every time you remove a broken or seized bolt an angel gets his wings."

                      August 20, 2026 at 8:33 am #326778
                      JACQUES
                      Participant

                        Johnson Carburetor Group Parts for 1957 35hp RD-19 Outboard Motor    part#12

                        Joining AOMCI has priviledges 🙂

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