In this schematic the "Bushing (697)" is used most often.
The component with the lowest price in the BOTTOM COWLING schematic is the Bolt(ga1).
Parts such as the Bottom Cowling: Washer, Plain (646), Bushing (697), Screw (6e5), Bolt, With Washer(6b0) are included in the 70trv 1997 Bottom Cowling parts fiche.