seven components are listed in the schematic for this Yf60s 1986 Moto-4 Usa Cylinder Head - Cylinder .
A sample from the products for the Cylinder Head - Cylinder include: Head, Cylinder 1, Bolt, Stud (25k), Plug, Spark (ngk Bp6hs) Ur (usa), Nut, Flange(34m).
In this schematic the "Bolt, Stud (25k)" is used most often.