The Suzuki Eiger 400 LT-A400F is a versatile All-Terrain Vehicle (ATV) produced from 2002 to 2007, offering both 2x4 and 4x4 drivetrain options. Known for its robust engineering and reliability, the Eiger 400 was designed to provide a balanced blend of power and maneuverability for recreational riding and light-duty work. Its 376cc liquid-cooled, single-cylinder engine, coupled with an automatic CVT transmission, ensures smooth operation across various terrains. With a comfortable riding position, ample cargo capacity on its front and rear racks, and a reputation for dependable performance, the Eiger 400 stands as a capable and enduring machine in the mid-size utility ATV segment. This comprehensive service repair workshop manual provides detailed information for the Suzuki Eiger 400 LT-A400F covering the production years 2002 through 2007. It serves as an essential resource for DIY mechanics, home repair enthusiasts, and professional technicians, offering factory-level service data for all vehicle systems. The manual includes step-by-step instructions for routine maintenance, complex repairs, and diagnostics, covering the engine, transmission, drivetrain, suspension, brakes, electrical systems, and bodywork. With hundreds of detailed photos and diagrams, this English-language manual is designed to empower owners and technicians to maintain, troubleshoot, and repair their Eiger 400 efficiently, ensuring its longevity and optimal performance.