Some items from this specific schematic: Gear-primary Spur,20t, Washer,40.5x60x1.6, Spacer,32.2x51.5x1.2, Roller.
This CRANKSHAFT assembly utilises six Roller(s) - the highest specified component.
The most reasonably priced component used on the Ksf250-a12 Mojave250 1998 Usa California Crankshaft is the Key-woodruff.