How can you reverse hayward pool motor?

it has a threaded shaft and there is no way to reverse this motor. if the motor is reversed it will spin the impeler off the shaft and BREAK THE PUMP !. the only way to reverse it is to change the in and outlets.. The inlet should have a good source of water .. need more help just call 407 227 6079 have pictures of your pump ready your pool pump repair guy in longwood fl.