1955 Johnson 25 Automatic Ignition Cut-Out help

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  • November 25, 2024 at 9:46 am #292281
    Chad Graves
    Participant

      US Member

      1955 Johnson 25 Automatic Ignition Cut-Out help

      Hello, restoring a 1955 RD-17, it has a cut-out switch, it needs a ground wire from it to the magneto to cut the bottom cylinder spark.

      Can someone please tell me where it connects on the magneto? I assumed it was the negative post of the bottom cylinder points? There is not a hole in magneto plate to get wire up,

      Please Help,

      V/R

       

       

      Chad Graves
      1953 Johnson JW – 10
      1954 Johnson QD – 15
      1955 Johnson RD – 17
      1956 Evinrude 5512
      1957 Johnson CD – 14
      1957 Johnson QD – 18
      1958 Johnson FD – 12

      November 25, 2024 at 11:24 am #292284
      crosbyman
      Participant

        Canada Member - 2 Years

        it goes on the point    to kill ignition. the text in your page is explicit.   it works like  typical kill button except here it is  vacum activated to ground just 50% of the magneto.  the point set for the  lower cyl is the rear coil’S  point… just follow the  coil wire that goes to the correct points

        Joining AOMCI has priviledges 🙂

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        Chad Graves
        November 25, 2024 at 4:13 pm #292287
        Chad Graves
        Participant

          US Member
          crosbyman wrote:

          it goes on the point    to kill ignition. the text in your page is explicit.   it works like  typical kill button except here it is  vacum activated to ground just 50% of the magneto.  the point set for the  lower cyl is the rear coil’S  point… just follow the  coil wire that goes to the correct points

          Thanks a million

          Chad Graves
          1953 Johnson JW – 10
          1954 Johnson QD – 15
          1955 Johnson RD – 17
          1956 Evinrude 5512
          1957 Johnson CD – 14
          1957 Johnson QD – 18
          1958 Johnson FD – 12

          November 26, 2024 at 6:19 pm #292296
          fleetwin
          Participant

            US Member - 2 Years

            I’ll bet Frank has a good wiring diagram, hopefully he will chime in

            1 user thanked author for this post.
            Chad Graves
            November 26, 2024 at 7:31 pm #292299
            crosbyman
            Participant

              Canada Member - 2 Years

              there isn’t much to wire … a single wire  to the back coil point has explained.

              I am surprised no “hole” can be found  as per OP’s comment there is not a hole in magneto plate to get wire up,

              if true maybe the mag plate got substituted …..I woud just drill one in a convinient place.  A hole large enough to install a small grommet to protect the wire from the plate

              Joining AOMCI has priviledges 🙂

              1 user thanked author for this post.
              Chad Graves
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