This comprehensive Aprilia RS4 125 2011 Workshop Repair Service Manual is your ultimate resource for maintaining and repairing your motorcycle. It offers in-depth information, complete with detailed illustrations and diagrams, to guide you through every aspect of servicing your Aprilia RS4 125. The manual covers a wide range of topics, including: * **General Information:** Provides fundamental knowledge about your Aprilia RS4 125, including safety precautions and essential information for understanding its design and operation. * **Fuel System:** Covers diagnosing and repairing issues related to fuel delivery, injection, and management, ensuring optimal engine performance. * **Cooling System:** Explains the operation of the cooling system, how to identify and resolve problems with coolant flow, and proper maintenance procedures. * **Engine Top End:** Detailed instructions are provided for servicing and repairing the cylinder head, valves, camshafts, and other components. * **Clutch:** This section addresses troubleshooting and repair procedures for the clutch system, including adjustments, replacement, and maintenance. * **Engine Lubrication System:** Thorough guidance on the lubrication system, ensuring proper oil flow and filtration for engine longevity. * **Engine Removal/Installation:** Step-by-step instructions on how to remove and reinstall the engine safely and efficiently. * **Crankshaft/Transmission:** Covers the intricacies of the crankshaft and transmission, including disassembly, inspection, repair, and assembly. * **Wheels/Tires:** Information on tire maintenance, repair, and replacement, ensuring safe and optimal handling. * **Final Drive:** Detailed instructions for servicing and repairing the final drive system, including chain maintenance, sprocket adjustments, and replacement. * **Brakes:** This section focuses on brake system maintenance and repair, covering adjustments, bleeding, and replacement procedures. * **Suspension:** Includes information on inspecting, adjusting, and repairing the suspension components for optimal riding comfort and handling. * **Steering:** Detailed instructions for maintaining and repairing the steering system, ensuring safe and precise steering control. * **Frame:** Covers the frame, its components, and how to identify and address any structural issues. * **Electrical System:** Provides thorough information on diagnosing and repairing problems with the electrical system, including wiring diagrams and troubleshooting procedures. * **Appendix:** Contains additional information, specifications, and resources for further reference. This manual is a valuable investment for any Aprilia RS4 125 owner who wants to perform their own maintenance and repairs, saving you time and money in the long run. Its detailed information and clear instructions will empower you to keep your motorcycle in top condition.

The Aprilia RS4 125, launched in 2011, is a sportbike that embodies the spirit of Italian racing heritage. This motorcycle, while designed for the younger and less experienced riders, is no mere beginner's bike. It packs a punch with its 125cc, single-cylinder, four-stroke engine, offering a thrilling and engaging riding experience. Its lightweight frame and agile handling make it a joy to navigate winding roads and tight city streets. The RS4 125 is a visually striking machine, boasting sharp, aggressive lines that echo the design of its larger siblings, the RSV4 and the Tuono V4. Its full-fairing design, replete with a sporty double headlight setup, not only enhances aesthetics but also provides aerodynamic efficiency. Beyond its sporty exterior, the RS4 125 boasts a range of features that cater to both performance and practicality. It comes equipped with a digital instrument cluster that provides clear and concise information to the rider. The suspension system, featuring an upside-down front fork and a monoshock rear, offers a balance of comfort and handling capabilities. Despite its entry-level positioning, the RS4 125 incorporates high-quality components, ensuring a reliable and durable ride. Its affordability and relative ease of maintenance make it an attractive choice for young riders seeking to enter the world of motorcycles and experience the thrill of two-wheeled freedom. The Aprilia RS4 125 serves as a gateway to the world of Aprilia's high-performance motorcycles, instilling a passion for riding and a desire to progress to the brand's more powerful offerings.