This manual covers the JS250 ATV WD250U, produced between 2002 and 2009. As an All-Terrain Vehicle, this model is designed for versatile off-road use, likely powered by a 250cc liquid-cooled 4-stroke engine, delivering an estimated 15-20 horsepower. The JS250 ATV series represents an offering in the mid-size ATV market, known for its robust construction and reliability. This comprehensive workshop manual provides detailed information to ensure the optimal performance and longevity of your vehicle. This complete service repair workshop manual in English offers A-Z coverage for all models and repairs of the JS250 ATV WD250U. It meticulously details engine systems, drivetrain, chassis, electrical systems, and braking systems, including engine removal and installation, fuel and lubrication systems, transmission, suspension, and wiring diagrams. Furthermore, the manual provides essential maintenance procedures, general maintenance schedules, and troubleshooting guidance, making it an indispensable resource for owners and technicians alike. Its extensive content, complete with detailed exploded diagrams, empowers users to perform diagnostics, maintenance, and repairs with confidence, saving time and expense.