a big job but not real bad, remove the shielding above engine,air filter etc... then remove the engine fan, and radiator shroud,drain the coolant, and remove the seperater belt so you can turn the engine, you will have to move the engine forward towards the radiator after splitting from pto. you don`t have to pull the pto, probably will have to pull off railings in the back by ladder to give room for taking engine out the back good luck be careful