Parts such as the Balancer: Chain,balancer, Washer,10mm, Shaft,rr.balancer, Plate,side are included in the Cm400t 1981 (b) Usa Balancer parts fiche.
On this parts fiche the Rubber,damper is the most specified component.
The twenty-six Cm400t 1981 (b) Usa Balancer component parts are all listed in this schematic.