In this schematic the "Spring" is used most often.
Parts such as the Starting Motor: Nut, Holder,brush, Motor Assy,starting, Nut are included in the An650 Burgman 2006 (k6) Usa (e03) Starting Motor parts fiche.
The lowest price component in this Starting Motor parts-list fiche is the O Ring(d:3,id:24.5).
