The FZ600, a distinguished model from the first generation produced between 1986 and 1988, represents a significant entry in the sportbike and standard motorcycle segment. Known for its high-revving inline-four cylinder engine with DOHC and 16 valves, the FZ600 offers approximately 70-75 horsepower and 37-40 lb-ft of torque. Its design emphasizes sporty handling, enhanced by dual disc front brakes, and it typically features a liquid-cooled engine and a 6-speed constant mesh transmission. This model is recognized for its smooth power delivery and was a popular choice for riders seeking a capable and reliable middleweight machine. This comprehensive workshop service manual provides in-depth technical information and repair guidance for the FZ600, covering model years 1986, 1987, and 1988. It details essential maintenance procedures, including oil changes, chain lubrication, and valve clearance checks, alongside thorough troubleshooting and diagnostic strategies for common issues. The manual covers all major systems, from the engine and fuel system to the transmission, electrical components, brakes, and suspension. With factory-level diagnostic and repair information, it serves as an indispensable resource for professional technicians and experienced DIY mechanics aiming to maintain and restore the performance and reliability of their FZ600.