This comprehensive workshop repair service manual for the Aprilia RS4 125, model year 2014, offers a wealth of technical information for servicing, maintenance, and troubleshooting. It is designed to be used by both professional technicians and knowledgeable motorcycle owners, providing detailed instructions and diagrams for a wide range of repair procedures. The manual covers all models, engines, trims, and transmissions for the 2014 Aprilia RS4 125. The manual features hundreds of pages of detailed information and diagrams, directly from the manufacturer. It includes step-by-step instructions, critical specifications, illustrations, and photos for every repair procedure. This manual covers a broad range of topics, including: * **General Information:** Provides an overview of the Aprilia RS4 125 and its systems. * **Fuel System:** Covers repair and maintenance of the fuel injection system, fuel lines, and related components. * **Cooling System:** Detailed information for servicing and troubleshooting the cooling system, including the radiator, hoses, and thermostat. * **Engine Top End:** Explains how to disassemble, repair, and reassemble the cylinder head, valves, and other components of the engine's top end. * **Clutch:** Covers repair and adjustment of the clutch system, including the clutch plates, basket, and cable. * **Engine Lubrication System:** Provides instructions for servicing and troubleshooting the oil system, including the oil pump, filter, and sump. * **Engine Removal/Installation:** Detailed guidance for removing and reinstalling the engine, including proper procedures and safety precautions. * **Crankshaft/Transmission:** Provides information for repairing and adjusting the crankshaft, transmission, and related components. * **Wheels/Tires:** Provides guidance on tire replacement, wheel balancing, and other wheel-related maintenance tasks. * **Final Drive:** Covers repair and adjustment of the chain drive system, including the chain, sprockets, and tensioner. * **Brakes:** Provides detailed information for servicing and troubleshooting the brake system, including the calipers, pads, rotors, and master cylinder. * **Suspension:** Covers repair and adjustment of the front and rear suspension systems, including the forks, shock absorbers, and linkages. * **Steering:** Provides instructions for adjusting and repairing the steering system, including the handlebars, steering head, and bearings. * **Frame:** Covers repair and maintenance of the motorcycle's frame, including the subframe, swingarm, and other components. * **Electrical System:** Provides detailed information for diagnosing and repairing the electrical system, including the wiring diagrams, components, and troubleshooting procedures. * **Appendix:** Contains supplementary information, such as wiring diagrams, specifications, and troubleshooting guides. This manual offers a comprehensive and detailed resource for all your Aprilia RS4 125 repair, maintenance, and troubleshooting needs.

The Aprilia RS4 125 is a sporty, lightweight motorcycle designed for young riders seeking an exhilarating entry point into the world of two-wheeled thrills. Introduced in 2014, this model embodies the essence of Aprilia's renowned racing heritage, offering a dynamic and engaging riding experience. Powered by a liquid-cooled, single-cylinder 125cc four-stroke engine, the RS4 125 delivers spirited performance with its peak power output of 15 horsepower. Featuring a lightweight tubular steel frame and a single-sided swingarm, the RS4 125 prioritizes agility and maneuverability. Its sleek, aerodynamic fairing not only enhances aesthetics but also contributes to improved wind protection and stability at higher speeds. The RS4 125 boasts a comprehensive set of features, including a telescopic front fork, a monoshock rear suspension, and a powerful disc brake system for confident stopping power. The Aprilia RS4 125 is not just a stylish and fun motorcycle; it's meticulously engineered to provide a safe and enjoyable riding experience. The bike's adjustable handlebars and footpegs cater to various rider heights and preferences, while the seat is designed for comfort during both short commutes and extended rides. Its lightweight design and responsive engine make it easy to handle and manage, especially for novice riders. Furthermore, the RS4 125 is a practical choice for daily commuting, with its fuel-efficient engine and manageable size. However, its sporty nature truly shines when you take it to the open road or the racetrack. The RS4 125 promises a thrilling dose of adrenaline and the freedom of the open road, making it an attractive option for riders wanting to explore their passion for motorcycles.