This manual provides comprehensive service and repair information for the 2007 Yamaha Bruin 350 4WD and Grizzly 350 4WD ATVs, including Hunter variants. These robust all-terrain vehicles are engineered for reliable performance across various terrains, offering a blend of utility and durability that has become a hallmark of Yamaha's ATV legacy. The platform is designed for demanding off-road use, featuring a capable 4WD system, comfortable ergonomics, and a powerful liquid-cooled engine, making them suitable for work, recreation, and exploration. This service repair maintenance overhaul manual is your definitive guide to keeping these ATVs in optimal condition. It covers all essential aspects, from routine maintenance schedules and fluid specifications to in-depth engine and transmission overhauls, brake system servicing, and electrical diagnostics. The manual includes detailed step-by-step procedures, exploded diagrams, and all necessary technical specifications, ensuring that owners and technicians have the knowledge to perform accurate repairs, maintain peak performance, and ensure the longevity of their Yamaha Bruin or Grizzly 350 4WD.