The 400 SX, produced from 2000 to 2007, is a high-performance motocross and off-road motorcycle renowned for its robust engineering and strong off-road racing pedigree. As part of the successful SX line, this model is celebrated for its potent four-stroke engine and superior handling, making it a formidable competitor in its class. Its design emphasizes raw performance and rider control, embodying a commitment to delivering exceptional off-road capabilities and a competitive edge.

This comprehensive factory service repair manual provides detailed information for the maintenance and repair of the 400 SX. It covers essential areas including engine disassembly and assembly, chassis components, electrical systems, fuel systems, and braking systems. The manual includes step-by-step procedures for routine maintenance, component overhauls, troubleshooting common issues, and making necessary adjustments, ensuring owners and technicians have the expert-level guidance needed to keep this performance machine in optimal condition.