The LT-A400 Eiger is a robust and reliable All-Terrain Vehicle (ATV) designed for both recreational riding and utility tasks. Produced between 2007 and 2009, this first-generation model features a dependable 376cc, air-cooled, single-cylinder engine paired with an automatic torque converter transmission and selectable 2WD/4WD drive modes. Its engineering emphasizes durable construction, comfortable suspension, and practical features like ample rack capacity for hauling gear, making it a capable choice for various terrains and applications. The Eiger is recognized for its solid performance and value within the mid-size utility ATV market. This comprehensive workshop service manual provides essential information for the maintenance and repair of the LT-A400 Eiger ATV for the 2007, 2008, and 2009 model years. It covers all major systems, including the engine, transmission, chassis, and electrical components, with detailed step-by-step procedures, troubleshooting guides, and technical specifications. The manual is designed to assist owners, technicians, and mechanics in performing routine maintenance, diagnostics, and repairs, ensuring the longevity and optimal performance of the vehicle. It includes critical data such as fluid specifications, capacities, and recommended service intervals.