In this schematic the "Screw-pan Head,6x40" is used most often.
Parts such as the Crankcase: Oil Seal Sb12205, Plug-oil Drain, Crankcase,rh, Pin,8x16 are included in the Ke100-b16 1997 Usa Canada Crankcase parts fiche.
The most expensive part in this assembly is the Crankcase,lh.