Re: 1953 Evinrude bigtwin problem

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June 22, 2017 at 10:46 am #60118
david-bartlett
Participant

    Joe,

    I am by no means an expert on these, but you are correct that all those pieces should rotate together. Somehow it seems that the spring is not turning at the same speed as the cam, allowing the hardened seat to wear into the bottom of the cam. Possibly the bottom seat of the spring is hanging up on the casting above the top seal??

    You probably already figured this out anyway.