I had a stubborn time with my 104... I had to get a torch and heat the clutch until all the grease was catching on fire and the main PTO housing was nice and red before it expanded enough to come off of the bearing after removing all 6 set screws... the bearing is locked in by a collar in there (at least it is on a 104) I also took a 2x4 and hit the PTO on the sides using a sledge hammer while rotating it. I have never been a fan of prying anything.
Oh and if u choose the torch... you may want a fire extinguisher handy... There is a lot of grease that accumulates on the engine... Good tip!! Lol