Parts such as the Top Cowling: Nut, Spring (6a0), Washer, Plain (646), Hook 2, Hook 1 are included in the 40g/eg/etg 1988 Top Cowling parts fiche.
The most expensive part in this assembly is the Top Cowling Assy.
fifteen components are shown in this 40g/eg/etg 1988 Top Cowling exploded diagram.