This manual covers the EC FSE 400 / 450 motorcycle models produced between 2003 and 2005. As an off-road motorcycle, the EC FSE series is recognized for its performance and durability in enduro competition and trail riding. These models typically feature a liquid-cooled, single-cylinder, 4-stroke engine with displacements around 400cc or 450cc, a 6-speed sequential gearbox, and hydraulic disc brakes for reliable stopping power. The engineering quality of motorcycles is evident in their robust construction, designed to withstand the rigors of off-road use. This comprehensive Service Repair Workshop Manual provides an absolute wealth of information for maintaining and repairing your EC FSE motorcycle. It covers the entire vehicle from front to back, detailing complete disassembly, inspection, repair, and reassembly procedures for all major systems, including the engine mechanical and electrical components, fuel system, transmission, chassis, suspension, and braking systems. The manual also includes routine maintenance schedules, troubleshooting guides for common issues, and essential technical specifications such as torque values and fluid capacities. Its professional-level detail makes it suitable for both owners performing their own maintenance and professional mechanics.