The most reasonably priced component used on the Kdx175-a2 Kdx175 1981 Usa Canada Side Covers/chain Cover ('81-'82 is the Washer-spring,6mm.
In this schematic the "Screw,6x14" is used most often.
Some items from this specific schematic: Screw,6x14, Washer-spring,6mm, Washer,6.5x20x1.6, Cover-side,lh,l.green.
