The 2004 Yamaha YZ250 is a high-performance, liquid-cooled, two-stroke motocross motorcycle renowned for its powerful engine and agile handling. As part of Yamaha's esteemed YZ series, this model embodies the brand's heritage of producing competitive off-road machines. Featuring an advanced suspension system, a lightweight aluminum frame, and a 249cc engine, the YZ250 is engineered for demanding competition and enthusiast riding. Its robust construction and focus on rider control make it a staple in the motocross segment.

This service manual provides comprehensive repair and maintenance procedures for the 2004 Yamaha YZ250. It covers essential areas including engine service, transmission and clutch maintenance, chassis and suspension work, braking system overhauls, and electrical system diagnostics. The manual also details scheduled maintenance, troubleshooting common issues, and step-by-step disassembly and reassembly instructions. With technical specifications and insights into the model's design, this guide is an indispensable resource for owners and technicians seeking to maintain and repair this iconic two-stroke motorcycle.