Re: 1951 Johnson QD12 lower unit won’t drop

[Don]

Well, I would clamp the upper part of the driveshaft in vise (doesn’t matter if you hurt this surface) with the powerhead hanging down (have something a inch or so from the top of the powerhead so it doesn’t crash to the floor). Then, I would use a flat (maybe a convex/concave tip don’t know which one is which) ended tip on the air hammer to rap on the upper driveshaft close to the powerhead. It might help to have an assistant with some sort of rig to pry down on the powerhead while rapping on the driveshaft with the air hammer.