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  1. #1

    Default "I have a 1977 25 HP long shaf

    "I have a 1977 25 HP long shaft Evinrude needing lower unit repair. I can not remove the unit as the long stud at the rear will not break free. I have tried heat, cold, WD 40, and 2 lock nuts to turn the stud. The gear case and extension move slightly at the front. The stud seems locked in all 3 components. Any suggestions. I'm afraid I will break one of the castings. Bill"

  2. #2
    Join Date
    Apr 2006
    Location
    , Langkawi, Malaysia
    Posts
    5,750

    Default "Two ways of doing it, both &#

    "Two ways of doing it, both 'naugty' and depending on what kind of tools You have.
    1: The easiest way, cut with a metal saw 1/2" above the gear case flange through the extension and the bolt. That leaves about 1/2" of he stud left in the gearcase to use a vice-grip or similat to remove the remaining bolt without ruining the threads. The extension you put in a vice and press out the stud. (Might need a couple of tonns and some heat)
    2: Same procedure, but you cut at the flange. You then need a steady machine drill to drill out the stud, in worst case install a helicoil for the new one.
    Good Luck!"

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