I am going to guess that the main cable is very stiff (hardened or spring steel) and will require annealing in order to make that bend. That requires heat until light red then allow it to cool naturally. Then you can readily bend it to that shape. My concern would be that this annealing process may soften the adjacent straight section of cable, rendering it subject to bending under stress of pushing the lever. You may be able to restore the stiffness of the cable by heating to red hot and quenching it in oil.
Ed Pruss At home 60 years ago we had a set of German made (with round tapered jaws ) that would make those right up.I still use that same pair today. Don't anneal but maybe I should,have to experiment a little on that.
EdPruss Those pliers are like a short pair of needle nose (no cutter) with round tapered jaws. Up next to the hinge jaws are square perfect for a 90 degree bend,Krauter brand on the pivot point. Great for electrical eyelets on copper,music wire,or just any wire.