1954 Evinrude Big Twin gear case drain screw washer

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June 24, 2023 at 5:20 pm #277333
Jersey Jim
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Trying to find some drain screw washers for the 1954 Big Twin. Original part number was 27X284. There are lots available such as OEM 311598 but no way to be sure these are a good fit. Is there a replacement part number?
June 24, 2023 at 7:06 pm #277334
frankr
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27-284 is superseded by 307552.
June 24, 2023 at 7:29 pm #277335
frankr
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311598 is the “new and improved” (plastic) version, replaces the old crumbly ones.

307551 is a drain screw with a 311598 washer.

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Jersey Jim
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