i don't have the book in front of me. old magnet will be able to tell you for sure but i think it is because of room. you have to get the housing to come right back to clear the input shaft to the clutch. i know it is a tight fit. also when you pull the trans it has to come out a ways to get the back shaft to clear. also there is an oil tube that has to clear too.
if you have a winch or pto on the back of the cat, you have to pull the seat and steering booster so you can reach down and guide the trans shaft back in to the coupler.
thansk
old magnet, good to see you are awake, LOL
thansk
This cat does have a BEE GEE pump on the PTO -- so more fun. There isn't much room [length of the coupling] between the clutch and trans to work with so pulling that pump makes sense.
Sure great you share your knowledge.
I'll update.