[ccm]

Ok, I'm puzzled with this, maybe someone can shed some light for me. I have the Enco 9x20 Lathe, and I'm looking to swap out the 3 jaw chuck for the 4 jaw that it comes with, yes granted I've read all the reviews out there that it's not the best unit, or sometimes can be a real bear to dial it in at first, but I'm trying to turn down some dies for a tubing bender, and I'm using 5.5 inch round solid stock, so I need to use the larger chuck. Here's my dilemma....how the hell does this come off ???? I've looked at it for hours, and can't for the life of me figure this out, plus I'm fairly new at this, and don't want to damage it doing it the wrong way.
Can someone point me in a direction on this please ?....

thanks in advance!!

-Arthur