Parts such as the E-4: Lifter Assy,tensi, Gasket,tensioner (nas), Guide,cam Chain, Screw,pan,ex6 are included in the Chf50 Scoopy 2002 (2) Japan Af55-110.120 E-4 parts fiche.
On this parts fiche the Bolt,knock 5mm is the most specified component.
The Bolt,knock 5mm is the lowest priced item on this E-4 schematic.