The Yamaha SZR660 SZR 600, produced around the year 2000, is a lightweight sportbike known for its agile handling and sporty performance, making it an excellent choice for beginner to intermediate riders, commuters, and those seeking an accessible sportbike experience. Built upon a strong heritage in motorcycle manufacturing, this model offered a compelling blend of responsive engineering and reliable operation, positioning itself as a strong contender against competitors like the Kawasaki ER-5, Suzuki GS500, and Honda CB500. Its design emphasized a focused riding experience, characterized by a 599cc four-stroke, liquid-cooled engine, a 6-speed transmission, and a capable chassis featuring telescopic front forks and a monoshock rear suspension for optimal stability and control. This comprehensive service manual is designed to be an indispensable resource for maintaining and repairing the Yamaha SZR660 SZR 600. It covers all essential aspects, including detailed procedures for engine mechanicals, fuel and ignition systems, transmission, chassis, suspension, brakes, and the electrical system. The manual provides step-by-step instructions for scheduled maintenance, diagnostics, troubleshooting common issues, and complete component overhauls, suitable for both professional technicians and experienced DIY mechanics. With clear explanations, technical specifications, and diagnostic flowcharts, this English-language manual empowers owners to perform necessary upkeep, ensuring the longevity and optimal performance of their motorcycle.