Should just be the 4 studs. The splines could be stuck in the crank. Wedges, time, and patience should do it. Don't pound on it, because you are likely
do you have thru transom exhuast? Or thru outdrive?
Torque it to 125 ftlbs..as long as your torgue wrench is the length shown. I believe 19" is typical.
This is a tricky one ! !
OK I am about to install Mercruiser drive u joint retainer nut.*
The torque specification is 2200