This service repair manual covers the models produced between 2004 and 2009. As a prominent maxi-scooter designed for comfortable long-distance commuting and touring, the Majesty blends motorcycle-like performance with scooter convenience. Its engineering emphasizes reliability and practicality, offering a spacious riding position, ample storage, and a capable 395 cc four-stroke, liquid-cooled engine with electronic fuel injection. The Majesty is recognized for its comfortable ride and dependable performance, making it a popular choice for both daily commuting and extended journeys, competing with models like the Honda Silver Wing and Suzuki Burgman 400. This comprehensive manual serves as an essential resource for owners, mechanics, and technicians to maintain and repair the YP400. It provides detailed coverage of all major systems, including the engine, transmission, fuel system, cooling system, electrical system, chassis, suspension, and brakes. Within its hundreds of pages, you will find step-by-step procedures for routine maintenance, engine rebuilding, transmission repair, electrical diagnostics, and troubleshooting. The manual also includes technical specifications, wiring diagrams, and information on bodywork, ensuring that users have the knowledge needed to keep their Majesty operating at peak performance and longevity.