This manual provides comprehensive information for the 2005 Yamaha YP400 MAJESTY, a maxi-scooter known for its comfort and touring capabilities. Engineered with a 395 cc four-stroke, liquid-cooled, single-cylinder engine, the YP400 MAJESTY features electronic fuel injection for efficient performance. Its design emphasizes practicality and reliability, making it suitable for both daily commuting and longer journeys. The scooter boasts advanced features for its class, including a continuously variable transmission (CVT) for smooth acceleration and dual disc front brakes for reliable stopping power. This Service Repair Workshop Manual is meticulously compiled to guide owners, DIY mechanics, and professional technicians through all aspects of maintaining and repairing the 2005 Yamaha YP400 MAJESTY. It covers in-depth procedures for engine overhaul, fuel system service, transmission maintenance, electrical system diagnostics, brake system servicing, suspension repairs, and chassis work. Detailed instructions, troubleshooting guides, torque specifications, and clear wiring diagrams are included to ensure accurate and efficient repairs, enabling users to keep their vehicle in optimal condition.