Re: 78 Evinrude changing water pump. Cant get output shaftout of crank. Help?
If you have the shift rod disconnected, the 4 bolts plus the nut on the gearcase mounting stud removed and it still doesn't drop, make sure that stupid mounting stud is not frozen in there holding things up. If that is not the case, then you'll have to resort to brute force and try to wedge it apart. Be patient, as guys have worked for weeks trying to get these things unstuck.
There are many recent threads already on this subject.