The component with the lowest price in the GENERATOR/C.D.I. UNIT/ LEFT CRANKCASE COVER schematic is the Screw Washer 6x28.
Some items from this specific schematic: Susp.cdi Unit, Bolt,flange,6x32, Cover Assy.,l.cas, Ac Gen,flywheel.
This Ac Gen,flywheel is the most expensive of the items that make up this Generator/c.d.i. Unit/ Left Crankcase Cover assembly.