The 2012 Sportsman 400 HO is a capable All-Terrain Vehicle (ATV) designed for both recreational trail riding and light utility tasks. Known for its High Output (HO) 400cc class engine, this model offers a balanced blend of power and efficiency. Key features include an automatic Variable Transmission (PVT) with Engine Braking (EBS) for enhanced control, and an On-Demand All-Wheel Drive (AWD) system that can seamlessly switch between 2WD and AWD. Its long-travel independent front and rear suspension contributes to a comfortable ride over varied terrain, making it a versatile choice for outdoor enthusiasts. This Service Repair Manual provides comprehensive guidance for maintaining and repairing the 2012 Sportsman 400 HO. It covers essential areas such as detailed engine service, drivetrain maintenance, suspension and steering system upkeep, and brake system procedures. Additionally, the manual includes information on the electrical system, body and chassis work, preventative maintenance schedules, and troubleshooting common issues. With its in-depth coverage, this manual serves as an invaluable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their vehicle.