You basically have 2 options, either pull one of the giant triangluar plates off the back, as per the photo, or you can take to the top of the frame with an angle grinder/oxy and cut a groove to remove it. Most of the ones I have seen have been butchered the second way. Unfortunately Anniversary is the worst model they made to work on. If it were mine, I would just do the shaft bearings and leave the pulley bearings alone, they always seem to last a lot longer. Unless the drive is due for corks, then you won't have much choice.
