Here you go.
Start by removing the bearing dust caps - should twist and slide off. Then remove the split nut and loosen the pulley set screw.
Then you can loosely fit the drawbar (no collet) and tap the end of it to loosen the bearing shaft. You could hit the shaft directly, but this will help protect it.
Once removed, you will see the outer bearing cone has a pip which located in the slot in the shaft - important point for reassembly.
Here are all the parts when disassembled.
I remember reading that some lathes have a plain ring nut and a split nut. Mine doesn’t and I don’t think it should, but of course the shaft will only come out if there’s no threaded retainers in the way.
Let me know if you have any other questions... oh, and don’t forget to refit your drive belt when you put it all back together like I just did.