The component with the lowest price in the PEDAL - KICK STARTER ARM schematic is the Pin,cotter 1.6x15.
Parts such as the Pedal - Kick Starter Arm: Washer,14x20, Washer, 13x20, Nut,hex 6mm, Rub,gear Change are included in the Mtx50rff Belgium Pedal - Kick Starter Arm parts fiche.