Reply To: Stripped Tank Threads

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September 10, 2025 at 2:14 pm #299759
Aidan Smith
Participant

    US Member

    Richard,

    This motor is not listed on the SIG, but it is a 1941 Johnson MD-20, similar to an HD-25. The internal threads of the tank are completely smooth, and I would consider re threading it, but finding a new filler cap may be difficult.

    1952 Blue Streak "B-Stock Runabout" - 1952 Mercury KG7Q
    1955 Feather Craft Vagabond - 1956 Mercury Mark 55E