The 2011 Bruin 350 4WD and Grizzly 350 4WD, including their Hunter variants, are robust All-Terrain Vehicles (ATVs) engineered for a blend of recreation, hunting, and utility tasks. These models are powered by a reliable 348cc liquid-cooled, 4-stroke engine featuring a 33mm Mikuni carburetor and TCI ignition, delivering approximately 20-22 HP and 20-22 lb-ft of torque. They are equipped with an Ultramatic® CVT automatic transmission and On-Command® selectable 2WD/4WD drive system, providing smooth power delivery and essential traction for varied terrain. With a sturdy steel frame, ample ground clearance, and substantial front and rear rack capacities, these ATVs are designed for durability and practical application, upholding a long-standing reputation for quality in the ATV market. This comprehensive service, repair, and maintenance manual provides detailed, step-by-step instructions for the 2011 Bruin 350 4WD and Grizzly 350 4WD ATVs, presented in English. It covers all essential aspects of vehicle upkeep and repair, including in-depth engine overhaul, fuel system maintenance, drivetrain and transmission servicing, brake system procedures, suspension and steering adjustments, and electrical system diagnostics. The manual also includes scheduled maintenance guidelines, troubleshooting trees for common issues, and inspection procedures with specific measurement data. Its computer-generated, high-quality format ensures clear, zoomable text and images, making it an invaluable resource for owners and technicians seeking to maintain and repair these ATVs to dealer-level standards.