Parts such as the Crankcase-cylinder: Holder, Clutch Wire, Pin, Dowel, Pin, Dowel, Cylinder are included in the Mx100 1979 Usa Crankcase-cylinder parts fiche.
The Yamaha CRANKCASE-CYLINDER has twenty-nine products enlisted in the schematic.
Of all the components used in this assembly the Case, Crank (l.h) is the most expensive.