Some items from this specific schematic: Guide,kickstarter Spr, Washer,18.5x23x1.2, Gear-spur,kickstarter, Circlip.
On this parts fiche the Washer,17.3x22x0.5 is the most specified component.
The Kickstarter Mechanism assembly is constructed from several parts from which the Lever-assy-kick is the most expensive.