Reply To: Lower Unit removal Merc 450 1962

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February 8, 2020 at 2:12 pm #194287
jeff-register
Participant

    The bolt that holds the pinion gear on the DS has a very thin head for clearance. Take a 6 point box end wrench & file it flat on the contact side for full contact on the bolt. Many have been stripped using a 12 point & not flattening the bevel. Be sure to use loctite on the threads during assembly. Watch carefully for shims & don’t bend or lose them. They hide on the gears.
    Good luck,