The thirty-two It425 1980 (a) Usa Clutch component parts are all listed in this schematic.
In this schematic the "Plate, Friction (nas)" is used most often.
Parts such as the Clutch: Rod,push 1, Push Lever Assy, Washer, Lock (1m1), Washer (363) are included in the It425 1980 (a) Usa Clutch parts fiche.