The Yamaha YZ250, a 2010 model year motocross motorcycle, represents a pinnacle of open-class performance. Renowned for its potent 249cc liquid-cooled 2-stroke engine featuring Yamaha's Power Valve System (YPVS), and an agile aluminum bilateral beam frame, this machine is engineered for competitive racing and demanding off-road enthusiasts. Its advanced KYB Speed Sensitive System front forks and KYB rear shock absorber provide exceptional damping and adjustability, contributing to its reputation for precise handling and rider feedback. The YZ250 embodies Yamaha's long-standing heritage in motorsports, offering a track-ready experience built on decades of innovation and refinement.
This comprehensive manual serves as an essential guide for owners and technicians alike, covering all aspects of the Yamaha YZ250. It details routine maintenance procedures, including air filter cleaning, spark plug replacement, and chain adjustment, alongside critical fluid specifications for engine oil, coolant, and brake fluid. In-depth troubleshooting sections address common issues, while step-by-step repair instructions facilitate everything from minor component replacements to major engine and transmission rebuilds. Technical specifications, torque values, and detailed system coverage for the engine, chassis, fuel, ignition, cooling, exhaust, brakes, and electrical systems are provided to ensure optimal performance and longevity of the motorcycle.
