Yamaha YQ50L 2003 5WJ5 ENGLAND 1B5WJ-300SK on-line schematics - your first port of call when repairing or restoring.
This parts-list page (CRANKCASE) contains the most products with thirty-three listed parts.
YQ50L 2003 5WJ5 ENGLAND 1B5WJ-300SK section with forty Other schematic pages.