This manual covers the YFM350X Bruin Wolverine 350 and YFM400FA Kodiak models produced between 2003 and 2009. Renowned for its powersports engineering, these ATVs have been crafted to offer a balance of performance and utility, suitable for a variety of terrains and tasks. The Wolverine and Kodiak series represent a robust line of vehicles designed for both recreational riding and demanding work, emphasizing reliability and user-friendly operation, characteristic of a commitment to quality. This comprehensive Factory Service Repair Workshop Manual in English provides detailed instructions for all repairs, servicing, and troubleshooting procedures for the specified models. It covers essential systems including the engine, transmission, drivetrain, suspension, brakes, electrical, and fuel systems, with in-depth guidance on maintenance tasks, diagnostic procedures, and component replacement. Featuring hundreds of pages with detailed photos and diagrams, this manual serves as an invaluable resource for owners, DIY enthusiasts, and professional technicians seeking to maintain and repair their vehicles.