This comprehensive Aprilia ROTAX engine type 655 EFI 2001 Factory Service Repair Manual provides you with all the necessary information to confidently service and repair your motorcycle. The manual is meticulously crafted, offering step-by-step instructions and detailed illustrations to guide you through every procedure. This manual is ideal for both seasoned mechanics and do-it-yourself enthusiasts, providing a detailed understanding of your motorcycle's inner workings. Dive into the depths of your Aprilia ROTAX 655 EFI engine with this manual. It covers a vast range of topics, including engine identification, general precautions, disassembly and assembly, maintenance checklists, check and maintenance procedures, essential tools, engine body, fuel system, troubleshooting, servicing specifications, tightening torques, disassembly and servicing instructions for the cooling system, exhaust system, fuel filter, electrical system, alternator, regulator, and wiring diagrams. The manual goes beyond basic maintenance, delving into advanced troubleshooting procedures with detailed wiring diagrams to help you diagnose and correct even the most complex electrical issues. Every repair procedure is meticulously documented with high-quality illustrations, drawings, and photos, ensuring clarity and ease of understanding. This manual is the ultimate resource for anyone seeking to maintain, repair, or restore their Aprilia ROTAX 655 EFI engine. It provides the same level of detail and expertise used by professional technicians and mechanics, empowering you with the knowledge and tools to keep your motorcycle running smoothly.

The Aprilia ROTAX 655 EFI engine, found within various Aprilia motorcycle models from the early 2000s, marked a significant step forward in both performance and technology for the Italian manufacturer. This liquid-cooled, four-stroke, 655cc single-cylinder engine was a testament to Aprilia's dedication to innovation. Employing electronic fuel injection (EFI), it harnessed the power of modern technology to achieve optimal combustion and precise fuel delivery, leading to increased efficiency and a smoother, more responsive throttle. The engine's design, featuring a single overhead camshaft (SOHC) with four valves, contributed to its ability to deliver strong power throughout the rev range, while maintaining a balanced and refined operation. This engine served as the beating heart of iconic Aprilia models like the Pegaso 650, a versatile adventure bike known for its off-road prowess and comfortable riding experience. The ROTAX 655 EFI engine was not just about raw power; it aimed to provide a well-rounded riding experience. The engine's design, with its balancer shaft, minimized vibrations, ensuring a smooth and comfortable ride even during extended journeys. Coupled with the EFI system, the engine delivered excellent fuel economy, making it an efficient companion for daily commutes and long-distance adventures. While the ROTAX 655 EFI engine was eventually replaced by newer, more powerful iterations, it holds a special place in Aprilia history. This engine played a vital role in solidifying the brand's reputation for producing reliable, powerful, and aesthetically pleasing motorcycles, leaving a lasting impression on the world of two-wheeled transportation.