Quoted from WesleyCowan:Turned out to be very easy and just involves detaching two screws off of the motor and pushing out the old shaft but making sure the indentation on the new one goes in the right direction. Wasn't hard or time consuming at all.
Thanks for following up, I haven't broken mine yet but the witch isn't going up and down and I'm going to have to tweak it. But going to try and order a new one.