Outside door hanle Lock

I need to repair the inner locking cylinder in my outside door handle lock. Henry Portz sells a nice replacement piece. Getting the key locking cylinder out was easy as was removing the bezel that locks the handle in the door skin. Now looking into the empty handle I can't figure out how to continue opening this up. Hope someone reading this has done what I want to do. Ruining the locking door handle is not going to happen. I just wont have a lock that works... Thanks everyone...