This comprehensive Aprilia ROTAX engine type 655 1997 Factory Service Repair Manual is your ultimate resource for maintaining and repairing your motorcycle engine. Packed with detailed instructions, diagrams, and specifications, this manual provides everything you need to confidently tackle any repair. The manual begins with a thorough explanation of the engine's identification, followed by essential safety precautions you must adhere to during any work. It then dives into the intricate process of disassembling and assembling the engine, ensuring you understand the proper procedures for each step. You'll also find a comprehensive maintenance checklist, allowing you to keep your engine running smoothly with regular inspections and upkeep. This service manual covers all aspects of engine care, including detailed information on checking and maintaining components like the engine body, fuel system, cooling system, exhaust system, and electrical system. Detailed troubleshooting sections are included to help you diagnose and rectify any issues that may arise, along with specific servicing specifications and tightening torques for various components. With clear illustrations and step-by-step instructions, this manual makes even complex repairs accessible to both novice and experienced mechanics. You'll find enlarged insets for detailed examination of parts and numbered figure references to easily match illustrations with instructions. The detailed table of contents provides quick access to the information you need, saving you time and effort. This Aprilia ROTAX engine type 655 1997 Factory Service Repair Manual equips you with the knowledge and guidance to perform professional-level repairs and maintenance on your motorcycle. You'll gain a deeper understanding of your engine's workings and confidently address any issues that may arise, saving you time and money in the long run.

The Aprilia Rotax 655 engine, a powerhouse of the late 1990s motorcycle scene, is a testament to the engineering prowess of Rotax, a renowned Austrian engine manufacturer. This liquid-cooled, 655cc, two-stroke, single-cylinder engine represents the pinnacle of two-stroke technology for its time. Famous for its impressive power output and exhilarating performance, the Rotax 655 became an iconic choice for Aprilia's high-performance motorcycles, particularly the Aprilia RS 125, RS 250, and the legendary Aprilia RSV Mille. The engine's design incorporates a sophisticated reed valve induction system, coupled with a powerful crankshaft, ensuring efficient fuel and air delivery, resulting in a smooth and responsive power delivery. The Rotax 655 engine is also known for its durability, capable of handling high-revving operation and sustained performance. Despite the inherent performance and technological advancement, the Rotax 655 engine also faced criticism regarding its environmental impact and complexity. The high emissions associated with two-stroke engines led to increasing regulations and ultimately contributed to the phasing out of this engine technology. The complexity of the engine's design, including its intricate lubrication and cooling systems, demanded meticulous maintenance and service, often requiring specialist expertise. This complexity, coupled with the engine's high-performance nature, contributed to higher running costs compared to contemporary four-stroke engines. Despite these challenges, the Aprilia Rotax 655 engine remains an iconic symbol of two-stroke performance, etched into the memories of motorcycle enthusiasts who experienced its raw power and thrilling character. The Aprilia Rotax 655 engine, while no longer in production, continues to be appreciated for its historical significance and remains a sought-after engine for restoring and racing classic Aprilia models.