This comprehensive service repair manual provides a wealth of information for the Aprilia RS4 50 motorcycle, covering all models from 2011 to 2014. It is designed to be a valuable resource for both professional mechanics and DIY enthusiasts, allowing them to perform a wide range of repairs and maintenance tasks with confidence. The manual includes detailed step-by-step instructions and high-quality exploded diagrams, making it easy to understand and follow even complex procedures. It covers everything from basic maintenance and adjustments to in-depth engine overhauls and electrical system troubleshooting. Key areas covered in the manual include: * **General Information:** Contains vital specifications, model identification, and important safety precautions. * **Maintenance:** Guides on regular maintenance procedures, including oil changes, filter replacements, and routine checks. * **Engine:** This section delves into engine removal and installation, fuel system components, lubrication and cooling systems, combustion system, cylinder head and valve operation, alternator and starter clutch, crankshaft, transmission, and balancer components. * **Transmission System:** Covers gearbox and clutch operation, detailed repair procedures, and adjustment guidelines. * **Front Wheel and Steering System:** Provides guidance on front wheel assembly, steering system components, bearings, and adjustments. * **Rear Wheel System:** Explains the rear wheel assembly, braking system components, and maintenance procedures. * **Chassis:** Offers extensive information on frame, body panels, exhaust system, suspension components, and their repair procedures. * **Cooling System:** Explains the cooling system operation, troubleshooting, and repair methods. * **Fuel Injection System:** Provides detailed information on fuel injection components, troubleshooting, and repair procedures. * **Braking System:** Covers brake system components, adjustments, bleeding procedures, and troubleshooting. * **Suspension:** Explains suspension components, adjustments, and repair methods. * **Electrical System:** Includes wiring diagrams, troubleshooting guides, and repair procedures for the battery, charging system, ignition system, electric starter, lights, meters, switches, and other electrical components. * **Technical Information & Specifications:** Provides comprehensive technical specifications for the Aprilia RS4 50, including engine dimensions, tolerances, and other essential data. * **Troubleshooting:** Offers valuable guidance in identifying and resolving common issues with the motorcycle. This manual is a must-have for anyone who wants to save money on repairs, gain a deeper understanding of their Aprilia RS4 50, and perform repairs and maintenance with confidence.

The Aprilia RS4 50 is a sporty and stylish 50cc motorcycle designed for young riders seeking an exhilarating introduction to the world of motorcycling. Launched in 2011, the RS4 50 was marketed as a successor to the popular RS50, with a modern design and enhanced performance. This lightweight machine boasts a sleek, aerodynamic fairing inspired by Aprilia's larger racing machines, giving it a distinct racing character. Its single-cylinder, 2-stroke engine is known for its punchy acceleration, providing a thrilling ride, especially in the lower rev range. The RS4 50 is equipped with a telescopic front fork and a monoshock rear suspension, offering a responsive and comfortable ride for maneuverability on urban streets and twisty roads. Beyond its performance, the RS4 50 is also appreciated for its practicality. The lightweight construction makes it easy to handle, while the standard features like a digital instrument panel and a disc brake system ensure a reliable and safe riding experience. The RS4 50's design and features make it an ideal choice for riders seeking a fun and affordable way to experience the freedom of riding a motorcycle. The bike is particularly well-suited for learners and younger riders who are looking for a stylish and exciting entry point into the world of two-wheeled transportation. Its sporty aesthetic and performance capabilities make the RS4 50 a popular choice for young riders eager to make a statement on the road.