The nineteen Yt60n Tri-zinger 1985 Usa Air Cleaner component parts are all listed in this schematic.
On this parts fiche the Screw Pan Head is the most specified component.
A sample from the products for the Air Cleaner include: Plate, Reed Valve, Element, Air Cleaner, Joint, Air Cleaner 1, Gasket, Valve Seat (nas).