Re: need some assistance with prop seals
Prop shaft seals are not leaking---Don't fix something that aint broke! Save the seals for if the originals start to leak.
However, if you insist: I think you may have misread the manual. Your lower is the Merc designed one very similar to Merc 40. Two capscrews hold the bearing carrier in the gearcase. Now, I am not quite sure but---
You remove the capscrews. There should be two threaded holes somwhere on the carrier. You place a puller like a steering wheel puller onto the shaft end and screw in threaded rods into the carrier. Tighten nuts onto the threaded rods to pull out the carrier. The shaft is just a bearing point and stays inside the case.
Alternately, (now here again I am not sure) you tap the ears that the capscrews were in to turn the bearing carrier a bit. Now using a hard wood block, tap on the ears to drive out the carrier. I have not yet disassembled my 75 lower, but these are the ways I would try.