This manual covers the 300 EXC, a performance-oriented off-road motorcycle produced for the 2004, 2005, and 2006 model years. As part of the second generation utilizing the LC4 platform evolution, the 300 EXC is renowned for its potent 2-stroke, liquid-cooled engine, advanced WP suspension, and lightweight chromoly steel perimeter frame. These attributes, combined with high-quality Brembo brakes and a 6-speed transmission, position the 300 EXC as a formidable machine for hardcore enduro riding and competition, offering a significant advantage in performance and off-road capability.

This comprehensive factory service repair manual provides detailed guidance for the maintenance, diagnostics, troubleshooting, and repair of the 300 EXC. It encompasses all essential systems, including the engine, fuel, ignition, cooling, exhaust, transmission, drivetrain, suspension, brakes, wheels, electrical components, and chassis. With in-depth coverage of routine maintenance, engine and suspension overhauls, component replacement, and specific procedures like carburetor tuning and brake bleeding, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain and repair their vehicle to factory specifications.