Re: 1952 Johnson Seahorse qd 13

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January 14, 2017 at 4:45 am #51008
David Stanton
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    That donut gasket is part number 73 in Gary’s exploded view of the carb. It fits over the end of part #28 and interfaces with the bottom of the carb bowl and when the bowl is screwed on it compresses this donut some. When I bought my QD-13, somebody had taken the carb apart and put it back together without that part – same symptoms you are having. I’ve seen this problem on several OMC carbs on a different HP motors from the mid to late 1950s, and into the 1960s.
    Dave