On this parts fiche the Spring,starting is the most specified component.
The Roller,6x15 is the lowest priced item on this Pulse Generator/ Starting Clutch schematic.
Parts such as the Pulse Generator/ Starting Clutch: Roller,6x15, Bolt,flange,sh,6x25, Cap,start.roller, Spring,starting are included in the Vfr750f Interceptor 1989 (k) European Direct Sales / Kph Pulse Generator/ Starting Clutch parts fiche.