Parts such as the Cylinder/cylinder Head: Insulator,carb, Plug,spark (u24fs, Plug, Spark., Gskt,head,cover (nas) are included in the St70 Dax 1989 (k) France Cmf Cylinder/cylinder Head parts fiche.
On this parts fiche the Washer, Sealing is the most specified component.
The Honda CYLINDER/CYLINDER HEAD has twenty-seven products enlisted in the schematic.