The most reasonably priced component used on the Xrv750 Africa Twin 1998 (w) Germany / 50p Starting Motor is the Bolt,flange,6x32.
On this parts fiche the Bolt,setting is the most specified component.
Some items from this specific schematic: Cover Terminal, Terminal Set, Bolt,flange,6x32, O-ring,24.4x3.1.
