OK15 Johnson

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  • September 9, 2018 at 8:52 pm #11136
    eltoquad
    Participant

      US Member

      Where can I find info on an OK15 Johnson, such as H.P. rating and at what rpm?

      September 9, 2018 at 9:27 pm #82509
      bob-d
      Participant

        US Member

        I believe it’s a 1947 8.1 HP Canadian Johnson.
        Bob D

        September 10, 2018 at 11:22 am #82542
        eltoquad
        Participant

          US Member

          Bob,
          Thanks for all the info. The one thing it didn’t list was the rpm that motor h.p. is rated at. Does anyone have that info?

          September 10, 2018 at 6:44 pm #82581
          jmylaw
          Participant

            The original "General Instruction Book" says that N.O.A. Certified Brake H.P. is 8.1 at 2800 R.P.M.
            I have an OK 20, (same motor with removable heads) that runs like a champ. Easy to start and lots of torque.
            Jim

            September 10, 2018 at 11:38 pm #82597
            garry-in-michigan
            Participant

              Lifetime Member

              I would guestimate an operating range of between 3,500 to 4,000 RPM – – – 🙂

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