This manual covers the YFM250X Bear Tracker and YFM250BT Bruin All-Terrain Vehicles (ATVs) produced between the 1999 and 2005 model years. These models are recognized for their reliable performance and versatility, suitable for both recreational trail riding and utility tasks. There is a strong legacy in ATV manufacturing, and these particular models offer a balanced combination of power, comfort, and durability, reflecting a commitment to quality engineering. This comprehensive workshop repair and service manual provides detailed information for all aspects of maintaining and repairing your YFM250X Bear Tracker or YFM250BT Bruin. It includes extensive coverage of engine systems, drivetrain, chassis, and electrical components, along with step-by-step procedures for disassembly, inspection, and assembly. Furthermore, the manual offers essential maintenance schedules, fluid specifications, troubleshooting guides, and diagnostic procedures, empowering owners, mechanics, and technicians to keep these ATVs in optimal working condition.