The YP400S Majesty, a distinguished motorcycle from the 2004 model year, represents expertise in the maxi-scooter segment. Engineered for comfort, performance, and practicality, it is powered by a 395cc 4-stroke, liquid-cooled engine featuring fuel injection and a Digital CDI ignition system. This model is designed for urban commuting and light touring, combining a powerful 27.5 HP engine with a smooth automatic CVT transmission and belt drive. Notable features include its keyless ignition, remote seat and fuel cap opening, and a linked-brake system for enhanced rider control. The legacy of innovation and reliability underpins the Majesty's design, making it a well-regarded option in its class. This comprehensive service repair manual is your essential guide for the YP400S Majesty, covering all aspects of repair and maintenance with factory-level detail. It provides in-depth information on engine systems, including fuel, lubrication, and cooling, as well as transmission, drivetrain, chassis, suspension, and electrical systems. Detailed procedures for periodic maintenance, fluid changes, component overhauls, and troubleshooting are included, along with crucial technical specifications and torque values. This manual is designed for owners, DIY mechanics, and independent repair shops, offering clear, step-by-step instructions and diagrams to effectively maintain and repair the vehicle, thereby saving time and money.