This manual covers the Aprilia Leonardo, available in 250cc and 300cc sub-models, produced in 2003. The Leonardo is a liquid-cooled, four-stroke scooter featuring a single-cylinder engine with SOHC and 4 valves, delivering approximately 21 HP for the 250cc and 23 HP for the 300cc variant. Its engineering is characterized by a reliable automatic CVT transmission, hydraulic disc brakes on both front and rear, and a telescopic front fork with an adjustable rear shock absorber, making it suitable for urban commuting and general transportation.

This comprehensive English service manual provides detailed information for the repair, maintenance, and rebuilding of the engine, chassis, electrical systems, and body of the Aprilia Leonardo. It includes extensive troubleshooting guides and essential technical specifications, such as engine oil type and capacity, coolant and brake fluid requirements, and recommended service intervals for oil changes, air filter cleaning, spark plug replacement, and drive belt inspection. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining and repairing their vehicle.