With three applications this O-ring is the most specified part.
The component with the lowest price in the STARTING MOTOR schematic is the Bolt,flange,6x25.
Parts such as the Starting Motor: Bolt Set, O-ring,24.4x3.1, Brush,holder Set, Spring,carbon Bus are included in the Cbr600f Hurricane 1990 (l) Spain / Kph Starting Motor parts fiche.