Home Forum Ask A Member 1963 Johnson QDL-24 10HP

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  • #40285
    steeleman
    Participant

      Lindy, thank you, did not know that the cam could be adjusted. That should get me looking good.

      Fleetwin, I do not think it is. Everything matches the parts book exactly. The correct carb kit fit this carb for this vintage.

      #40290
      fleetwin
      Participant

        US Member

        Sorry buddy, have to disagree with you….Perhaps that is some sort of replacement carburetor "fits all" carb, but I really doubt it. Someone could have transferred choke components from the old carb onto this one.
        Those carb kits fit many different carbs from many different years, so it does not surprise me that the carb kit pieces fit OK.
        Now, this does not mean the carb you have can not be made to work OK, just set the cam pick up adjustment by altering the throttle arm position on the throttle shaft….

        #40292
        steeleman
        Participant

          I guess we have to agree to disagree, lol. I know carb kits fit different years, but this carb is the same as the diagram, I will post a pic of the full carb tomorrow to give you guys a full visual. What threaded part do you feel isn’t original? I’m confused as to what you see?

          It runs great as it sits, so I really have nothing I’m worried about other than the preciously mentioned timing concerns.

          #40294
          chris-p
          Participant

            Steelman,

            That carb is definitely NOT original to that motor. Not that it wont work, but is from a different model.

            The threaded hole fleetwin is referring to is in top right corner, to the left of the spring. The throttle shaft on your motor is most definitely supposed to have a square side as mentioned. I have rebuilt a gazillion (is that a real number!?) of these 50s/60s OMC carbs, and have never seen a carb like that on them. Im going to dig through my parts inventory to see if I can determine what its from. I think OMC, but cannot think off hand what model. Im curious now.

            #40295
            steeleman
            Participant

              In the parts diagram it shows that hole? It you are talking the one sticking straight up. Granted, I don’t know it is is threaded or not due to it being a drawing.

              I will get pictures of the whole carb. It may not be 100%. But it is an omc carb at least, that I can promise. Has a not round intake side where the choke is and all.

              #40296
              steeleman
              Participant

                And Chris, if it is not I am certainly curious too. I would eat me shorts if it isn’t OMC, but I would buy a different model. Please let me know if you find what it is.

                I’m still thinking it’s right, but then again I’m a stubborn guy. I hope you can prove me otherwise just so I know what it is I’m dealing with here

                #40299
                steeleman
                Participant

                  http://m.ebay.com/itm/1963-JOHNSON-EVIN … nav=SEARCH

                  This carb claimed to be from the same motor appears to have a round shaft too:/ still searching, gaining knowledge

                  #40302
                  Mumbles
                  Participant

                    Now you got me going on this….. Pretty sure I have a ’63 Sportwin carb somewhere so now I have to find it to see what it looks like.

                    #40304
                    fleetwin
                    Participant

                      US Member

                      OK, stand corrected, looked at that ebay carb and saw the threaded boss…

                      #40315
                      fleetwin
                      Participant

                        US Member

                        Thought about this some more on the drive to work….1963 was the last year for the 10hp, so OMC may have been on a cost cutting mission here….
                        The threaded boss might have been a sign of designs to come in later years for the 18-25hps, which I’m sure shares a common carb body casting with these 10hps…
                        In any event, even the wizards at OMC couldn’t expect that throttle arm to stay in place on the throttle shaft with just that set screw….Look at the throttle shaft again, I’m thinking you will find a dimple on the shaft where the throttle arm set screw is supposed to park itself into….

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