Parts such as the Ignition: Harness,magneto, Nut,6mm, Clamp,wiring Harness, Coil-exciting are included in the Kd100-m4 1979 Canada Ignition parts fiche.
On this parts fiche the Washer-spring,4mm is the most specified component.
The Washer-spring,6mm is the lowest priced item on this Ignition schematic.