Parts such as the Change Drum/shift Fork: Drum-assy-change, Roller,4x12, Fork-shift, Plate-position are included in the Klf220-a1 1988 Australia Change Drum/shift Fork parts fiche.
The Bolt, Flanged, 6x35 is the cheapest item from this partsfiche.
Check out any of the seventeen Change Drum/shift Fork components enlisted.