This workshop service repair manual provides comprehensive technical information for the Aprilia Engine MY 660. This modern, performance-oriented parallel-twin engine, likely found in Aprilia's mid-range sportbike and naked bike offerings such as the RS 660 and Tuono 660, is celebrated for its balance of power, efficiency, and character. Engineered with a rich racing heritage, the MY 660 platform features advanced technologies including electronic fuel injection, ride-by-wire throttle control, and sophisticated electronic rider aids like multi-level traction control. Its design as a potential stressed member in chassis configurations highlights its robust engineering.

This English-language manual is designed to be an indispensable resource for owners, mechanics, and technicians. It covers all aspects of the engine, from routine maintenance procedures such as oil changes and filter replacements to in-depth engine repair, including top-end and bottom-end rebuilds. Detailed sections on the engine's mechanical and electrical systems, fuel system, cooling, lubrication, and exhaust systems are provided. Furthermore, the manual includes systematic troubleshooting guides, component disassembly and reassembly instructions, critical technical specifications, torque values, and detailed electrical wiring diagrams, ensuring accurate and efficient maintenance and repair.