The 400 is a high-performance off-road motorcycle, produced from 1998 to 2003. This model is recognized for its powerful 4-stroke, liquid-cooled, single-cylinder engine, robust chassis, and capable off-road suspension, reflecting Scandinavian engineering quality. It was designed for demanding enduro and motocross riding, competing with other prominent brands in the off-road segment. Notable features include a relatively lightweight construction and a focus on mechanical performance, making it a popular choice for riders seeking a potent and reliable machine for challenging terrain.

This comprehensive factory service manual provides detailed guidance for the full service and repair of the 400. It covers essential maintenance procedures, troubleshooting common issues, in-depth diagnostic techniques, and complete overhauling instructions for all major systems, including the engine, transmission, chassis, brakes, and electrical components. The manual is an indispensable resource for owners, mechanics, and technicians, offering the technical specifications and step-by-step procedures necessary to maintain the vehicle's performance and ensure its longevity.