Reason for short brass tube attached inside filler cap on 1924 BNL 2hp Johnson

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  • September 20, 2024 at 5:45 am #290932
    Monte NZ
    Participant

      International Member

      Could someone please enlighten me re the above.

      I thought it could be for measuring the oil, but I can  there is a small drilled hole through the side of the tube, so that doesn’t make sense.

      If it is for measuring the oil, how do you work out the ratio?

      Thanks in advance
      Monte NZ

      September 20, 2024 at 10:08 am #290940
      The Boat House
      Participant

        I believe the tube is intended to keep gas from splashing out of the vent in the cap. I suspect the pin hole is to let air into the tank when – if the fuel level in the tank is above, and blocking off, the end of the tube.  Tubs
         

         

         

         

        September 20, 2024 at 10:54 pm #290964
        Monte NZ
        Participant

          International Member

          Thanks very much for your reply Tubs…….your explanation makes sense.  I’ve noticed that my Elto ruddertwins have a similar setup.

          Thanks again

          Monte NZ

          PS nearly ready for its first run in possibly 80 years.

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