On this parts fiche the Pin,gearshift is the most specified component.
The twenty-one Cf50s Japanese Home Market (cf50-380) Gear Shift Drum - Gear Shift Arm component parts are all listed in this schematic.
A sample from the products for the Gear Shift Drum - Gear Shift Arm include: Fork,r.gearshift, Fork,l.gear Shift, Arm Comp.,gear Sh, Spring,shift Arm.