Home Forum Ask A Member setting the points on a Johnson A45

Viewing 10 posts - 1 through 10 (of 12 total)
  • Author
    Posts
  • #242270
    Steve Petschel
    Participant

      US Member

      Need a little help on how to set the points on a Johnson A45.
      Thanks in advance, Steve

      #242276
      Buccaneer
      Participant

        US Member

        This is the magneto on my 1929 A-45.
        I can’t remember if I had any problems, but it appears that
        you loosen the binding screw on the “U” shape portion,
        then use a little wrench to turn the movable half of the point
        set. Presume it’s .020 gap on the points, and don’t forget
        to snug that binding screw back up…… at least that’s what
        it looks like. Is the cam for the points on the crankshaft or
        the flywheel hub? If on the flywheel hub, I presume there’s
        a hole in the top of the flywheel to set the points through.
        DSCN0005

        Prepare to be boarded!

        #242292
        Tubs
        Participant


          A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

          • This reply was modified 4 years ago by Tubs.
          #242303
          Steve Petschel
          Participant

            US Member

            Thanks TBH. I never would have found those marks without you help. Buccaneer, The point assembly attached is to the mag plate by 2 screws, but the holes in the point assembly are oblong allowing the point assembly to be adjusted in it’s position on the mag plate . Is that for rough positioning and the adjustable point half for fine tuning the points?

            #242304
            Steve Petschel
            Participant

              US Member

              Buc, the point cam is on the flywheel hub.

              #242310
              stanley
              Participant

                US Member

                Yes,you may have to change the points location on the plate in order to time their opening.When the points open is more important than the exact amount that they open.

                #242312
                Buccaneer
                Participant

                  US Member

                  Thanks TBH. I never would have found those marks without you help. Buccaneer, The point assembly attached is to the mag plate by 2 screws, but the holes in the point assembly are oblong allowing the point assembly to be adjusted in it’s position on the mag plate . Is that for rough positioning and the adjustable point half for fine tuning the points?

                  Steve, “rough setting” or best geometry between the points arm and flywheel
                  cam perhaps. I think Tubs mentioned the timing marks on the flywheel
                  and plate to me, but I can’t remember if I found them on mine.

                  Prepare to be boarded!

                  #242315
                  Tubs
                  Participant


                    Unless someone makes you aware of them you’re not
                    going to know what they’re for, if you even see them.
                    I believe it was a Tom Manley reply that first made me
                    aware of them. Of course I could have read the manual
                    but I never have time for that.
                    Tubs

                    A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

                    #242319
                    Steve Petschel
                    Participant

                      US Member

                      Thanks to you guys, the motor is now alive! Would any of you know the initial carb setting and proper starting procedure?

                      #242324
                      stanley
                      Participant

                        US Member

                        Neadle valve 1 1/2 turns out from seated.Throttle lever on side of carb all the way down on C for choke.Mag plate handle centered over carb.Hold stem of float valve down until you get a little gas leaking around it.You can open the compression relief by pushing lever up,but it’s not necessary.Give it a good pull and you’re on your way.Once underway move carb lever up to F and advance mag lever to the right as you face motor.The motor must be moving through water for the cooling system to work

                        • This reply was modified 4 years ago by stanley.
                      Viewing 10 posts - 1 through 10 (of 12 total)
                      • You must be logged in to reply to this topic.