Some items from this specific schematic: Gasket(12.1x16.2x3.7) (nas), Bolt(8x16), O Ring(d:3.1,id:32.7), Bolt.
The Crankcase Cover assembly is constructed from several parts from which the Cover,clutch is the most expensive.
The lowest price component in this Crankcase Cover parts-list fiche is the Gasket(8.2x14x1) (nas).