The Yamaha FZ1 Fazer, specifically the RN21 model from its second generation, represents a sophisticated fusion of high-performance sportbike capabilities with sport-touring practicality. Derived from the renowned R1 superbike engine, this 998cc inline-four motorcycle delivers approximately 150 horsepower, housed within a lightweight and rigid aluminum Deltabox frame. Its engineering is characterized by advanced features such as radial-mount front brake calipers and a responsive fuel injection system. Designed for riders seeking exhilarating performance on winding roads and comfortable long-distance journeys, the FZ1 Fazer offers a compelling blend of power, handling, and versatility, positioning it as a strong contender against rivals like the Suzuki Hayabusa and Kawasaki Z1000. This comprehensive Service Repair Workshop Manual, written in English and presented in a searchable format, covers the Yamaha FZ1 Fazer models from 2006 to 2010. It is an indispensable resource for owners and technicians, detailing everything from routine maintenance procedures, such as oil changes and valve adjustments, to in-depth repairs and diagnostics of all major systems. The manual provides thorough instructions for engine assembly and disassembly, transmission and clutch operation, chassis components, braking systems, and the complete electrical system, including wiring diagrams and ECU diagnostics. With over 400 pages of detailed information, it ensures the proper upkeep, troubleshooting, and repair of the vehicle, maintaining its optimal performance and reliability.