This manual covers the models manufactured between 1979 and 1985. These motorcycles, part of a renowned series, are celebrated for their robust inline-four engines and engineering quality. The 500 provided an accessible performance experience, while the 550 and ZX550 variants offered increased displacement and sportier capabilities, reflecting a significant era in Japanese motorcycle development. With their air-cooled engines, 5-speed transmissions, and reliable chassis, these models have been favored by riders seeking a blend of performance and dependability. This comprehensive Service Repair Manual is designed to assist owners, mechanics, and technicians in maintaining and repairing the 500, 550, and ZX550. It provides detailed information on general procedures, periodic maintenance, engine systems, fuel and cooling systems, electrical components, and chassis elements including suspension and brakes. The manual includes step-by-step repair procedures, diagnostic guidance, critical torque specifications, and essential wiring diagrams, enabling efficient troubleshooting and upkeep. This resource empowers users to perform routine servicing, component repairs, and more complex maintenance tasks, ensuring the longevity and optimal performance of their motorcycles.