This comprehensive Aprilia V990 Engine Service Repair Workshop Manual is designed to empower both amateur and professional mechanics with the knowledge and instructions needed to effectively service and repair this motorcycle engine. The manual features detailed, easy-to-understand instructions for a wide range of procedures, ensuring you can confidently perform each task correctly. Covering everything from engine removal and disassembly to individual component maintenance and reassembly, this manual provides a complete guide to keeping your Aprilia V990 engine running smoothly. The manual covers essential topics such as: * **Engine Removal & Disassembly:** Learn the proper procedures for removing and disassembling the engine, giving you access to all its components. * **Electric Starter & Ignition Unit:** Diagnose and repair issues with the starting system and the ignition unit, ensuring a reliable start every time. * **Cylinder Head & Cylinder Removal:** Gain expertise in removing and servicing the cylinder head and cylinder, crucial for maintaining optimal engine performance. * **Piston Removal & Installation:** Understand the process of removing and reinstalling the piston, a critical component that requires careful handling. * **Oil Pump & Water Pump:** Learn how to inspect, service, and repair the oil and water pumps, ensuring vital lubrication and cooling for your engine. * **Clutch & Crankshaft:** Gain insight into the operation, maintenance, and repair of the clutch and crankshaft, two vital components for smooth power transmission. * **Engine Reassembly & Installation:** Follow the detailed instructions for reassembling and installing the engine, ensuring a safe and effective process. By utilizing this manual, you can confidently perform routine and preventative maintenance tasks, saving you time and money in the long run by preventing premature engine failure.

The Aprilia V990, a model synonymous with Italian sport-touring excellence, represents the pinnacle of Aprilia's engineering prowess. This motorcycle, introduced in 2007, boasts a distinctive, aggressive design that marries classic sportbike styling with ergonomic considerations for long-distance rides. The heart of the V990 lies in its powerful 990cc, 90-degree V-twin engine, renowned for its smooth power delivery and exhilarating acceleration. This liquid-cooled, fuel-injected powerplant produces a respectable 115 horsepower and 75 lb-ft of torque, providing ample thrust for spirited riding and effortless highway cruising. The sophisticated design incorporates a trellis frame, allowing for a lightweight and responsive handling experience. Equipped with a six-speed transmission and a chain final drive, the V990 offers precise gear changes and smooth power transfer. Aprilia's commitment to rider comfort is evident in the V990's ergonomic design. The plush, adjustable seat, well-positioned handlebars, and forward footpegs create a balance between sporty handling and long-distance comfort. The comprehensive instrument panel, including a digital speedometer, tachometer, fuel gauge, and trip computer, keeps the rider informed. The V990 is further distinguished by its high-quality suspension, featuring fully adjustable front forks and a rear monoshock equipped with a remote reservoir. The powerful Brembo brakes offer exceptional stopping power, ensuring confidence-inspiring performance in all riding conditions. The Aprilia V990, with its distinctive styling, potent engine, and refined handling, continues to attract motorcycle enthusiasts seeking a thrilling and versatile machine that seamlessly blends sportbike performance with touring capabilities. Its limited production run and iconic status have secured its place as a coveted and collectible motorcycle within the Aprilia lineup.