This comprehensive Factory Service Repair Manual provides a wealth of information for servicing and repairing Aprilia Engine 3AS and 4AS models. It includes detailed instructions and diagrams covering every aspect of maintenance, from routine checks and adjustments to complex engine rebuilds. The manual is an indispensable resource for both professional mechanics and dedicated DIY enthusiasts, ensuring you have all the information needed to keep your Aprilia Engine running smoothly and reliably.

The Aprilia 3AS and 4AS engines are powerful and sophisticated powerplants that have powered a range of Aprilia motorcycles, known for their performance and handling. They are single-cylinder, four-stroke engines with a displacement of 125cc, designed for both road and off-road use. The 3AS and 4AS engines boast a water-cooled design, ensuring optimal operating temperatures even under demanding conditions. These engines are known for their impressive power-to-weight ratio, providing a thrilling riding experience, particularly for younger riders and commuters. They are equipped with a six-speed transmission, offering smooth gear changes and excellent acceleration. The 3AS and 4AS engines are also known for their reliability and durability, making them a popular choice for enthusiasts looking for a reliable and fun machine.

The Aprilia 3AS and 4AS engines are found in a range of Aprilia motorcycles, including the Aprilia RS125, Aprilia RX125, and Aprilia SX125. These models have become iconic in the motorcycle world, particularly in the 125cc segment. They are often praised for their handling and performance, making them a popular choice for both beginners and experienced riders. The Aprilia 3AS and 4AS engine's performance and reliability have made it a popular choice for both road and off-road use. The 3AS and 4AS engines are an integral part of the Aprilia motorcycle lineup, contributing to its reputation for building high-performance, exhilarating motorcycles. The Aprilia 3AS and 4AS engines are a testament to Aprilia's dedication to innovation and performance, providing a remarkable riding experience for enthusiasts around the world.