Parts such as the Generator: Nut (22u), Plug Cap Assy, Bolt, Flange(6u1), Washer, Plate (5n6) are included in the Tz125 2000 4jt7 Holland 104jt-100e1 Generator parts fiche.
The component with the lowest price in the GENERATOR schematic is the Bolt, Flange(6u1).
Of all the components used in this assembly the C.d.i. Magneto Set is the most expensive.