The Polaris Xplorer 400, produced around the year 2000, is a versatile All-Terrain Vehicle (ATV) designed for recreational use, utility tasks, and trail riding. This model features a robust 2-stroke, liquid-cooled, 2-cylinder engine displacing 398cc, delivering approximately 28 horsepower and 27 ft-lbs of torque. Its engineering highlights include a 4x4 drivetrain, MacPherson strut front suspension, independent rear suspension, and a Variable Transmission with high, low, neutral, and reverse modes. With a 7.5-inch ground clearance and a towing capacity of 1500 lbs, the Xplorer 400 is built for demanding conditions, offering a blend of capability and rider protection through features like integrated hand guards and full floorboards. This comprehensive factory service repair manual in English provides complete service and repair information for the Xplorer 400 (chassis code A00CN42AA). It covers all essential systems, including detailed procedures for engine overhaul, transmission service, drivetrain maintenance, suspension and brake system repairs, steering, electrical diagnostics, fuel system adjustments, and cooling system servicing. The manual also includes scheduled maintenance guidelines, troubleshooting charts for common issues, and precise technical specifications such as torque values and fluid capacities. Its purpose is to empower owners and technicians with the knowledge required for effective maintenance and repair, ensuring the longevity and optimal performance of the vehicle.