This workshop repair service manual provides comprehensive guidance for the YFM200, also known as the Moto-4 ATV, covering model years 1983 through 1986. Engineered by a company renowned for its commitment to quality and reliability, the YFM200 ATV was designed for both recreational riding and utility purposes. Its robust construction and user-friendly design made it a notable entry in the early ATV market, offering dependable performance for a variety of terrains. This manual details the vehicle's 196 cc air-cooled, 4-stroke engine, 5-speed manual transmission with automatic clutch, and shaft drive system, all contributing to its reputation for durability. The scope of this English-language manual is extensive, covering all aspects of repair, overhaul, and maintenance. It includes detailed procedures for the engine, transmission, fuel, ignition, lubrication, exhaust, electrical, bodywork, suspension, and braking systems. Furthermore, it provides step-by-step instructions for routine maintenance, tune-ups, component removal and installation, and troubleshooting common issues. This resource is invaluable for YFM200 owners, independent repair shops, and professional ATV technicians, offering dealership-level repair information to ensure the vehicle remains in optimal working condition.