Home Forum Ask A Member mercury switches

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  • #1134
    scoot
    Participant

      Looking to buy a couple of mercury switches for mid 50s 30hp Evinrude.
      Any sources?
      Thanks.

      Scoot

      #13524
      mr-asa
      Participant

        Can you even buy them anymore? I would think the sale of them would be regulated somewhat.

        #13526
        wedgie
        Participant

          Keep your eyes on Ebay. I found one NOS for a 59 Bigtwin .Cost around 8 bucks. Or….

          Check with Dan Gano or Ed Elliot as they both have lots of NOS parts. I will find their contact info and post it later.

          #13531
          crosbyman
          Participant

            Canada Member - 2 Years

            the old round faced furnace thermostats have mercury switches inside . if you are stuck you could probably canibalize one and rig it up Inside your engine at the proper angle

            Heat shrink wrap it for protection or apply a coat of silicone or… époxy ..to protect the glass tube.

            https://www.youtube.com/watch?v=RGohPXdJEgo

            Joining AOMCI has priviledges 🙂

            #13539
            frankr
            Participant

              US Member

              http://www.marineengine.com doesn’t have any for the 30hp, but they do have a couple for the 1957 35hp. I think it just has a longer wire.

              #13598
              billy-j
              Participant

                US Member - 2 Years

                If you need one for a 1956 30HP. get one for a 30 HP. They are specific to the year engine. I think it is the angle of the mounting tab on the switch that is different from year to year. If you still have yours and the wire is broke off just clean up where the wire is attached and solder the wire back on. Bill,

                #13607
                outboardnut
                Participant

                  US Member

                  I ‘m up in Fremont wi fishing_live in burb in chicago
                  I think I may have one from a 35 hp Johnson RDS-21–1959
                  If there is way you can use it let me know
                  Maybe there is some way to figure the correct angle?

                  #13654
                  r-c
                  Participant

                    Lifetime Member

                    Just don’t start your engine with a lot of throttle in forward or reverse! The only reason the mercury switch is there as a safety devise, so you can’t start the engine at full throttle in forward or reverse. System check… am in in neutral, am at start position, if ok pull rope or turn key. The lawyers started that far back!

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