Some items from this specific schematic: Seat,cam Resetspg, Washer (22mm), Spdl,kick Start., Ratchet,kick Stat.
This schematic depicts all components used in the Xr250r 1982 (c) E-14 Kick Starter Spindle partslist.
On this parts fiche the Washer,thrust,18 is the most specified component.