The 400, produced in 1999, is a performance-oriented off-road motorcycle designed for competitive riding, known for its robust, high-performance engine and agile handling. Originating from Sweden and later becoming part of another group, it established a reputation for innovative chassis design and a strong power-to-weight ratio, primarily competing with other European dirt bikes of its era. This model, a 4-stroke single-cylinder liquid-cooled machine with an approximate displacement of 370-400cc, was built for demanding off-road conditions, emphasizing rider capability and machine durability.

This Workshop Service Manual (WSM) provides comprehensive guidance for the maintenance and repair of your 1999 400. It covers all essential systems, including complete engine overhaul, gearbox and drivetrain service, chassis and suspension adjustments, hydraulic brake system diagnostics, electrical system troubleshooting, and fuel system tuning. With over 300 pages of detailed information, including procedures, technical specifications, and troubleshooting charts, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their 400.