The lowest price component in this Right Handle Switch (model Z) parts-list fiche is the Nut 6mm.
This schematic depicts all components used in the Dr500 1981 (x) Usa (e03) Right Handle Switch (model Z) partslist.
With a quantity of two pieces, the Screw 5x20 is the most used part in the RIGHT HANDLE SWITCH (MODEL Z) diagram.
