The complete album of images is here https://imgur.com/gallery/mOgTMZ8 I have removed all of the screws and the nut shown in the picture but I can’t manage to pop off the rest of the handle to get to the cartridge. I am trying to remove the handle so I can update it to a 1700 series handle. I found a similar post here but the detail of how to remove the handle we’re not provided.
Have you tried one of these?
These are used for removing pulleys from shafts. You are likely going to need to sharpen the points to fit. With a 3 jaw puller it's often useful to wrap a stretchy cord around the jaws to keep them from slipping off a narrow edge. The end is either a 1/2" or 9/16 end. use a socket on it.
That's a tricky one, that back bracket is supposed to be screwed to a board, then the front part just unscrews. but without the board there pipes are likely to break if you try too hard to unscrew it.
