The Aprilia Pegaso 650, produced from 1997 to 2005, is a versatile dual-sport and adventure motorcycle designed for riders seeking capability across varied terrains. It features a robust Rotax 654cc single-cylinder engine, known for its reliable torque, and a design that balances comfortable ergonomics for touring with sufficient suspension travel for light off-road excursions. This Italian-engineered machine was positioned to compete with other popular dual-sport models, offering a practical and enjoyable riding experience for both commuting and adventure touring. This workshop service repair manual provides comprehensive guidance for the Aprilia Pegaso 650 (all variants) from 1997-2005. It covers essential maintenance procedures, detailed troubleshooting steps, electrical schematics, and in-depth technical specifications. The manual is an indispensable resource for owners and technicians, offering step-by-step repair procedures for all major systems, including the engine, fuel system, transmission, brakes, and suspension, ensuring the motorcycle remains in optimal condition.