The Yamaha YFB 250 Timberwolf, a 1999 model All-Terrain Vehicle (ATV), is a testament to Yamaha's renowned powersports engineering. Designed for both utility and trail riding, this ATV embodies reliability and robust performance, characteristic of the Timberwolf lineage. Its heritage is built on providing dependable service in various conditions, making it a capable companion for recreational adventures and demanding tasks alike. This comprehensive service repair manual offers factory-level information for the Yamaha YFB 250 Timberwolf. It covers all essential workshop procedures, including detailed maintenance schedules, engine overhaul, chassis and drivetrain servicing, and electrical system diagnostics, complete with electrical diagrams. The manual also provides critical technical specifications, troubleshooting guidance, and step-by-step instructions for routine maintenance and complex repairs, ensuring owners and technicians have the resources needed for optimal vehicle upkeep.