Home Forum Ask A Member Flywheel magnet remagnetizing

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  • #285403
    Richard Stuber
    Participant

      US Member

      I have a 57 Johnson 35HP RD19 that I can’t coax a spark out of after having replaced the coils, points, condensers, and plug wires.  How to I determine if the flywheel magnet is sufficiently strong?  Can it be remagnetized if weak?  Flwheel shows signs of former heating and hammer blows.

      #285404
      frankr
      Participant

        US Member

        Magnets made after WWII just don’t go bad. Period. Look for something else.

        #285410
        crosbyman
        Participant

          Canada Member - 2 Years

          just  approaching a screwdriver  close to magnet will  snap it place…. like FR indicated… magnet s are ok

          Joining AOMCI has priviledges 🙂

          #285411
          pm-t2
          Participant

            Canada Member

            Make sure the points are connected to the correct coil. Its easy to mix them up, especially if you changed everything on t he mag plate.

            Best,
            PM T2

            #285418
            elgin2
            Participant

              US Member

              Make sure the eccentric screw is working. Some new points have a hole too large for it to work properly.

              #285421
              reivertom
              Participant

                US Member

                Check the ground as well.

                #285424
                crosbyman
                Participant

                  Canada Member - 2 Years

                  burnish the points  and  clean with  acetone or alchool  on a strip of paper

                  Joining AOMCI has priviledges 🙂

                  #285425
                  Richard Stuber
                  Participant

                    US Member

                    Thanks for all replies especially assurance that magnet is okay and ho to verify that.   I’ll check wiring again carefully and report back.

                    #285426
                    crosbyman
                    Participant

                      Canada Member - 2 Years

                      did you perform a resistance test between the plug boots and frame ground to confirm all is ok     each coil should read  between 4-8 kohms approx. depending on manufaturer

                      did you adjust timing per this video

                      http://www.youtube.com/watch?v=ga1Cjymj6ms&feature=youtu.be

                      condensers  are tricky  and may…. be bad  even new ones .  you can do  a “basic” test for  shorts  or open but the real  leak test is  done   with high voltage  (250vdc +)  if you  have  testing eqpt.

                      the western region AOMCI has excellent articles by m.Mohat

                      see articles 1-4 on condensers … how to test  and   fixes

                       

                      Joining AOMCI has priviledges 🙂

                      #285445
                      Richard Stuber
                      Participant

                        US Member

                        Disassembled everything today and started from scratch following Seloc Volume II from pp 5-5 through trouble shooting and final assembly pp 5-25.  No fire yet.  Have watched the video per crosbyman and will give that a whirl tomorrow.  Condenser capacitance measures nominal but I am not equipped to test for high volt breakdown.  Can try a change out for good measure as necesssary.

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