The 400 TRV, produced in 2006, is a versatile All-Terrain Vehicle (ATV) designed for both recreational riding and utility tasks, as indicated by its TRV (Towing and Recreation Vehicle) designation. This model features a 365 cc liquid-cooled, 4-stroke engine paired with a Continuously Variable Transmission (CVT) offering 2WD/4WD capability. Known for its 2-up seating and a towing capacity of 1050 lbs, it provides a practical solution for riders needing to transport passengers or haul equipment. The vehicle's engineering prioritizes reliability and capability, making it a competitive option in its class, which included models from major manufacturers like Polaris, Yamaha, Can-Am, and Suzuki. This comprehensive Factory Service Manual provides detailed information for the repair and maintenance of the 2006 400 TRV. It covers all mechanical and electrical systems, including the engine, transmission, chassis, suspension, brakes, and electrical components, offering factory-level diagnostic procedures and technical specifications. The manual includes step-by-step instructions for scheduled maintenance, component disassembly and reassembly, and troubleshooting common issues. Its scope is designed to empower owners and technicians to effectively maintain, diagnose, and repair the vehicle, ensuring optimal performance and longevity.