On this parts fiche the Washer-spring,8mm is the most specified component.
Parts such as the Front Fork: Holder-front Axle, Gasket (nas), Oil Seal,fork, Gasket,fork Drain Plu (nas) are included in the Ke250-b1 1977 / Mph Kph Front Fork parts fiche.
Check out any of the thirty-three Front Fork components enlisted.