its pretty easy. drain the oil, pull the kick start lever, pull off the oil pump cover, pull off the clutch cover, take the gear off the backside of the pump, take out the pump, clean everything back up, put the block off cover on, put the pump cover back on, put the clutch cover back on, reinstall kicker.
then just take the lines out, the tank out, and cap off the port on the carb for the oil injection