Some items from this specific schematic: Screw-pan Cros 4x12, Coil-exciting, Coil-ignition, Screw-cntsnk Hd,6x14.
On this parts fiche the Washer-spring,4mm is the most specified component.
The Kd125-a4 1978 Usa Canada Ignition consists of twenty-six pieces with the Flywheel being the most expensive.