1974 Evinrude 70 hp

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  • December 14, 2018 at 8:15 pm #160155
    Rick Robbins
    Participant

      Looking to find out the MINIMUM connections needed on a 1974 Evinrude 70 hp to get it to run in a test tank. The motor was given to me without controls or info. Thought someone might have had a similar experience with attempting a start up like this.
      Rick

      December 14, 2018 at 9:11 pm #160156
      frankr
      Participant

        US Member

        Actually, you can hand choke it and rope start it with no connections at all. However it will blow the rectifier unless you disconnect it (yellow wires) from the terminal strip. Also, you can not turn it off to stop it except by grounding the black/yellow stripe wire leading to the power pack. Careful, that wire can shock you.

        • This reply was modified 5 years, 4 months ago by frankr.
        December 14, 2018 at 10:14 pm #160160
        Rick Robbins
        Participant

          Thanks frankr, that’s just what I was looking for. I’ve had this motor for a while, was told it was fine, but never had the time to try and fire it up. Maybe in the spring when all my other boat stuff gets done.

          December 15, 2018 at 7:25 am #160173
          Rick Robbins
          Participant

            It would seem that if I somehow hooked up a battery to the motor first, I would eliminate the possible damage to the rectifier? Or am I just better off going with your original suggestion?
            Rick

            December 15, 2018 at 8:31 am #160176
            frankr
            Participant

              US Member

              You asked for minimum connections, which is what I gave. But yes, if you connect the + and – cables to a battery it will eliminate the danger to the rectifier. And of course you can go step further and electric start it with a jumper wire to the solenoid.

              December 15, 2018 at 8:54 am #160177
              Rick Robbins
              Participant

                Yes, you’re correct I asked for minimum and you provided that. Just thought I would try a step further to see how I could make it easier for myself, since I don’t have controls, I can add this newest info to get around any issues without causing damage. Yes, your original answer was just what I was looking for.
                Thanks for both answers, I feel much more confident in attacking this now and not damaging anything.
                Rick

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