Reply To: 1957 Evinrude Big Twin 35 hp exhaust leg drain

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May 26, 2020 at 8:41 pm #204097
Mumbles
Participant

    Something probably fell in there and is lodged in tight now. There isn’t much room to start with and I use a drill bit with an extension welded on it to clean these areas out. When it’s filled to the top with crud, it’s like drilling thru concrete. The 9.9/15’s are the worst ones as the drain is in the front and when it plugs up, salt water corrosion splits the case and a big chunk falls off the side.