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  1. TN-25

    Interchangeability between 7.5 & 6 lower units

    I?m curious as to just how interchangable the lower unit (case and all internals) are between the 1956 ? 58 Johnson / Evinrude 7 ?, 1956 ? 64 Johnson / Evinrude 5 ?, and the later 1965 ? 1979 Johnson / Evinrude 6. They look identical. It is a fact that the 5? & 7? shared the same lower unit...
  2. TN-25

    Bronze-bushed powerhead bearings

    Hello all. I am considering the purchase of a 1958 Johnson AD-12 7.5 horse motor. I am told it runs well. After learning about the dangers of getting a motor with excessive crank to main bearing clearance I am curious on how to check for such issues without tearing into it. Do I look for a motor...
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