Introducing the 2004 Ninja ZX-6R, a highly capable supersport motorcycle designed for exhilarating performance. This model, often designated by its chassis code ZX636-C1, represents a significant entry in the middleweight sportbike segment, distinguished by its 636cc inline-four engine that offers enhanced mid-range torque. Building on a rich motorsports heritage, the ZX-6R is engineered for a track-focused experience, featuring advanced technology for its time, including electronic fuel injection and an adjustable suspension system. Its aerodynamic design and potent powertrain make it a formidable machine for both spirited road riding and track day enthusiasts. This comprehensive service manual provides detailed guidance for the maintenance and repair of your 2004 Ninja ZX-6R. It covers a wide array of systems, including in-depth engine disassembly and reassembly, transmission and clutch servicing, brake system maintenance, and electrical system diagnostics with clear wiring diagrams. The manual includes essential routine maintenance procedures, troubleshooting guides, and specific repair instructions for all major components. With its detailed specifications, torque figures, and component replacement procedures, this resource is an indispensable tool for owners and technicians seeking to ensure the optimal performance, reliability, and longevity of this performance-oriented sportbike.