This schematic depicts all components used in the Gs650gl 1983 (d) Usa (e03) Cylinder Head Cover partslist.
A sample from the products for the Cylinder Head Cover include: Seal,oil(5x12x8), Sleeve,tachometer Drive Gear, Gasket,cylinder Head Cover (mca), Seal,tachometer Driven.
On this parts fiche the Bolt (6x40) is the most specified component.