1964 Johnson 5.5hp CD-21A carb question

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  • October 16, 2016 at 2:34 am #5506
    jerryswiss
    Participant

      In place of the high speed nut and needle on this motor it has a solid brass threaded plug about 3 inches long threaded into the carb bowel. It is long enough to stick out a hole in the lower cowling where there is marking to adjust a needle. I can post a picture tomorrow. What is it and why no needle? Is this an original part? It looks like one.

      October 16, 2016 at 2:50 am #45921
      frankr
      Participant

        It is a pin that the slow speed needle knob snaps onto. A link goes from the knob to a lever on the slow speed needle itself. In prior years, there was an adjustable high speed needle and a long packing nut, which was replaced by the long plug you are looking at.

        October 16, 2016 at 2:54 am #45922
        jerryswiss
        Participant

          That linkage must be missing. So no high speed needle?

          October 16, 2016 at 2:56 am #45923
          frankr
          Participant

            I can see that rig in my mind, but maybe I got it backwards. Anyhow, it has a fixed high speed jet, right? Look for it deep in the hole where a high speed needle normally would be.

            October 16, 2016 at 3:03 am #45924
            Anonymous

              http://www.marineengine.com/parts/johns … etor+Group

              October 16, 2016 at 3:07 am #45925
              jerryswiss
              Participant

                I see ok thanks for the diagram, yea I think I have seen one of those before. I will check tomorrow to make sure the high speed jet is there.

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