The 2011 Arctic Cat 400 TRV is a versatile all-terrain vehicle designed for recreational riders and light utility work. Featuring a liquid-cooled, 4-stroke, single-cylinder engine with approximately 375cc displacement and SOHC valve train, this ATV offers reliable performance for various off-road conditions. Its key features include two-up seating, electronic 2WD/4WD capability with a front differential lock, and independent rear suspension, making it suitable for tandem riding and challenging terrain. The TRV designation highlights its capacity for comfortable passenger carrying, enhancing its utility for exploration and trail riding. This comprehensive service repair manual in English provides in-depth guidance for the maintenance, service, troubleshooting, and repair of the 2011 Arctic Cat 400 TRV. It covers all major systems, including the engine, fuel, cooling, ignition, transmission, drivetrain, suspension, braking, and electrical systems, detailing procedures from routine maintenance like oil changes and filter replacements to complex engine overhauls and electrical diagnostics. The manual is intended for mechanics and skilled DIY owners, offering systematic troubleshooting guides, critical specifications, and required special tools to ensure the vehicle remains in optimal operating condition and longevity.