Some items from this specific schematic: Screw-pan-cros,5x10, Washer-plain,6mm, Washer-spring,6mm, Cotter.
This Seat ('76 -'77 Kz400 - D3/d4) diagram displays the required parts for the Kz400d4 1977 Canada Seat ('76 -'77 Kz400 - D3/d4).
On this parts fiche the Washer-plain,6mm is the most specified component.