Im at your Second half already I removed this whole thing to check the clutchdog and gears for wear when the yoke dropped behind I guess forward gear. or the furthest back area. And I am @ a loss as to how to get this thing out..I have thought ( in earlier post) that if I was able to remove the drain plug and bore it out to the size of the yoke and then the rethread at the new size but im not sure how much pressure there is and the thickness of the al there.You have two options.
First pull the LU from the engine, remove the water impeller housing then remove the top cover of the gear case.
Then maybe you can catch the yoke and put it in place using marine grease.
BUT be very careful when you remove the top cover, you maybe break it if it is tight at the LU.
Second option and in my opinion the best is to disassemble the LU by remove the bearing carrier, reverse gear and the whole prop shaft with the clutch dog.
Find the yoke and put it at the shift pin with marine grease, then you have to wiggle the prop shaft in through the forward gear and try to get the shift fork to catch the yoke and the reset the pin screw for the shift shaft/fork.
It can be a PIA but it is doable.
I have done it several times.
Be patient.
???----Just take the lower apart and re-assemble.-----Use grease to hold the yoke in place.----Be less work risk than drilling out a drain plug hole !!
Ive heard the gasket is impossible to find for these, but I guess I also thought that alot of stuff could fall out Im not sure where goes. I might as well take it apart and see what happens..Ill grab a seloc somewhere..