This manual covers the 450 ATV, produced for the 2010, 2011, and 2012 model years. Designed as a mid-size utility ATV, the 450 is engineered for a blend of recreational riding, agricultural tasks, and light industrial applications. It is known for offering robust capability and reliable performance within its segment, often positioning itself competitively against other brands. The 450 features a liquid-cooled, 4-stroke, single-cylinder engine with an approximate displacement of 443cc, paired with an automatic Continuously Variable Transmission (CVT) for versatile power delivery and selectable 2WD/4WD modes. This comprehensive Workshop Service Repair Manual provides detailed factory-level technical information for the 2010-2012 450 ATV. It encompasses all aspects of maintenance, diagnostics, and repair, including in-depth procedures for the engine, fuel system, cooling system, ignition, transmission, drivetrain, suspension, steering, brakes, and electrical systems. The manual includes preventative maintenance schedules, troubleshooting guides, component testing specifications, torque values, and detailed diagrams. It is intended to assist owners, mechanics, and technicians in maintaining the vehicle's optimal performance, ensuring its longevity, and performing accurate repairs.