The 1999 Polaris Xplorer 400 is a mid-size utility all-terrain vehicle (ATV) designed for recreational trail riding and light-duty work. Known for its torquey 2-stroke, 2-cylinder liquid-cooled engine and capable independent front suspension, this model offered a robust package for its era. It competed in the utility ATV market, providing features like a decent towing capacity and sturdy racks, making it suitable for activities such as hunting and general farm use. The Xplorer line was developed by Polaris to offer a more performance-oriented option within their ATV lineup, distinguishing itself with its engine power and suspension design during a period when 2-stroke engines were prevalent in ATVs. This comprehensive Factory Service Manual (FSM) provides detailed repair and maintenance information for the 1999 Polaris Xplorer 400 ATV. It covers a wide array of systems, including the engine, transmission (PVT), drivetrain, suspension, brakes, electrical system, fuel system, cooling system, exhaust system, and body/frame. The manual includes step-by-step repair procedures, diagnostic guides, adjustment procedures, and preventive maintenance schedules. Its purpose is to assist owners, mechanics, and technicians in effectively maintaining and repairing the vehicle, ensuring optimal performance and longevity. The digital format allows for easy searching and access to crucial technical data, torque specifications, and clear diagrams.