The Aprilia ROTAX engine type 655 1992 Workshop Repair Service Manual provides comprehensive service, maintenance, and troubleshooting information for your vehicle. This manual covers all models, engines, trim, and transmission types. It offers a complete and intact guide with no missing or corrupt parts or pages. This manual is identical to the one used by professional service and repair shops. The manual contains hundreds of pages of diagrams and detailed information for specific vehicle or equipment repair. It includes the most accurate and complete wiring diagrams and bulletins available. This manual offers pictures and easy-to-follow directions, outlining the necessary tools and repair procedures. The Aprilia ROTAX engine type 655 1992 Workshop Repair Service Manual covers essential topics, including: * **Engine Identification**: Learn to accurately identify the specific engine type. * **General Precautions**: Ensure safe and efficient operation by adhering to crucial safety guidelines. * **Maintenance Check List**: Easily track essential maintenance tasks and schedules. * **Check and Maintenance**: Detailed instructions for routine checks and maintenance procedures to keep your engine running smoothly. * **Special Tools**: Comprehensive list of specialized tools required for specific repair tasks. * **Engine Body**: In-depth explanation of the engine's physical components and their functions. * **Fuel System**: Detailed information on the fuel system, including components, troubleshooting, and maintenance procedures. * **Troubleshooting**: Guide to identifying and resolving common engine issues. * **Servicing Specifications**: Accurate specifications and tolerances for proper repair and maintenance. * **Tightening Torques**: Critical torque values for specific fasteners to prevent damage. * **Disassembling and Servicing**: Step-by-step instructions for safely disassembling, servicing, and reassembling engine components. * **Cooling System**: Comprehensive coverage of the cooling system, including components, troubleshooting, and maintenance. * **Fuel Filter**: Detailed information on inspecting, replacing, and maintaining the fuel filter. * **Electrical System**: Understand the workings of the electrical system, including detailed wiring diagrams. * **Alternator**: Detailed information on inspecting, troubleshooting, and servicing the alternator. * **Regulator**: Comprehensive coverage of the regulator's function, troubleshooting, and repair. This manual provides detailed substeps for expanding repair procedure information, along with notes, cautions, and warnings to highlight critical information. Numbered instructions guide you through every repair procedure step-by-step with bold figure numbers linking illustrations with instructions. Detailed illustrations, drawings, and photos accompany each procedure, with enlarged insets for detailed part identification. A numbered table of contents facilitates quick access to the information you need.

The Aprilia Rotax 655 engine, a cornerstone of Aprilia's motorcycle lineup in the early 1990s, embodies a potent blend of performance and engineering sophistication. This liquid-cooled, two-stroke, single-cylinder powerplant, displacing 654cc, was renowned for its potent power delivery and thrilling acceleration, particularly in the world of off-road racing. The engine's design, featuring a reed valve induction system and a rotary valve exhaust, ensured a seamless flow of power, making it a formidable competitor in the demanding arena of motocross and enduro. The Rotax 655's robust construction, featuring a cast-iron cylinder liner and a forged crankshaft, ensured durability and longevity even under extreme conditions. Furthermore, the engine's compact and lightweight design, a testament to Rotax's engineering prowess, contributed to the agile handling and responsiveness of the motorcycles it powered. The Aprilia Rotax 655, however, was not without its quirks. Its two-stroke nature meant it required a meticulous maintenance regimen, including regular oil changes and a keen eye on fuel-oil mixture ratios. The engine's high-revving characteristics demanded a skilled rider who could fully exploit its power band and manage its inherent vibration. Despite these demands, the Rotax 655 engine earned a loyal following among enthusiasts seeking raw power and a pure, visceral riding experience. Its legacy continues to resonate within the motorcycle community, serving as a reminder of Aprilia's commitment to performance and Rotax's mastery of two-stroke engine design. The 1992 Repair Service Manual for this engine is a valuable tool for mechanics and enthusiasts alike, providing detailed instructions and schematics to aid in the maintenance, repair, and restoration of this iconic powerplant.