🏷️ Basic Information Identification Make: Aprilia Model: RS4 125 4T Years Covered: 2011, 2012, 2013 Codes Engine Code Designation: 4-stroke, single-cylinder (specific code not provided, typically indicated in VIN or engine block) Vin Code Representation: VIN decoding specific to Aprilia 125 models of the era 👋 Introduction Market Position Segment: Lightweight sport motorcycle segment, often considered a premium learner bike. Competitive Analysis Key Competitors: Yamaha YZF-R125, Honda CBR125R, Kawasaki Ninja 125 (depending on market availability). Key Features Design Philosophy: Sporty, aggressive styling inspired by Aprilia's larger RSV4 superbike. Target Audience: New riders, those seeking an economical and stylish commuter, or track day enthusiasts. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: PDF Page Count Total Pages: 372 Manual Type Download Type: Instant Download Compatibility: Windows, Mac, Linux OS Requirements Software Requirement: Adobe Reader 📖 Manual Coverage Systems Covered Engine Management: Detailed diagnosis, testing, adjustment, removal, and installation procedures for engine components. Fuel System: Covers fuel injection system, pump, injectors, fuel filter, and related components. Ignition System: Information on ignition coils, spark plugs, and electronic ignition control. Cooling System: Procedures for radiator, coolant, fan, hoses, and thermostat maintenance and repair. Exhaust System: Details on catalytic converter, muffler, and exhaust pipe removal and installation. Transmission Clutch: Covers clutch operation, adjustment, and component disassembly/assembly. Gearbox Transmission: Detailed procedures for gearbox removal, disassembly, inspection, assembly, and installation. Frame Chassis: Maintenance and repair procedures for the motorcycle frame, subframe, and associated structures. Suspension Front: Detailed fork disassembly, seal replacement, oil level adjustment, and component inspection. Suspension Rear: Procedures for shock absorber, linkage, and swingarm maintenance and repair. Brakes Front: Information on brake calipers, master cylinder, brake lines, pads, and discs. Brakes Rear: Details on rear brake caliper, master cylinder, brake lines, pads, and disc. Wheel Tire: Procedures for wheel bearing replacement, tire mounting/balancing, and wheel specifications. Steering: Covers steering head bearings, handlebar, and steering system adjustments. Electrical System: Wiring diagrams, component testing, battery, charging system, lighting, and starter motor. Instrumentation: Details on speedometer, tachometer, indicator lights, and dashboard components. Bodywork Fairings: Removal, installation, and repair procedures for fairings, seat, and body panels. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, brake checks, tire pressure. Troubleshooting: Systematic diagnostic procedures for common and uncommon issues. Component Disassembly: Step-by-step guides for dismantling all major vehicle components. Component Assembly: Detailed instructions for reassembling components after repair or replacement. Adjustments: Precise instructions for all necessary adjustments, including valve clearance and idle speed. Repair Interventions: Comprehensive repair methodologies for a wide range of component failures. Cleaning Lubrication: Guidelines for proper cleaning and lubrication of various parts. Technical Depth Depth Of Coverage: Comprehensive, from basic maintenance to complete engine rebuilds and advanced electrical diagnostics. Pictorial Support: Detailed illustrations, exploded diagrams, drawings, and photos for all procedures. Service Data: Includes special notes, important points, service data, precautions, and specifications. Special Tools: Reference to specific special service tool numbers and their usage illustrations. Wear Limits: Specifies wear limits for critical components to ensure proper function and longevity. Torque Specifications: Detailed torque values for all threaded connections during assembly and installation. Diagnostic Information: Includes diagnosis and testing procedures for various systems. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Printability: Fully printable pages Viewing Capabilities: Viewable on any computer, zoomable, and printable. Binding Type Digital Binding: N/A (Digital PDF format) Paper Type Digital Paper Emulation: Emulates high-quality paper documentation Completeness Completeness Guarantee: 100% complete and intact, no missing/corrupt pages/sections ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, 4-stroke Displacement: 125cc (Approximate, specific bore/stroke details in manual) Cooling System: Liquid-cooled Performance Horsepower: Typically restricted to 15 HP (11 kW) to comply with A1 license regulations in many markets. Specific dyno figures may vary. Torque: Torque figures will be detailed in the manual, generally optimized for low to mid-range power delivery. Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline 🔧 Transmission Standard Gearbox Type: 6-speed manual transmission Optional Automatic Transmission: N/A (Not available) Features Clutch Type: Wet multi-plate clutch 📐 Dimensions Exterior Length: Refer to manual for precise dimensions. Weights Dry Weight: Approximately 130-135 kg (exact figures in manual). Fuel Tank Capacity: Approximately 14-15 liters (exact figures in manual). 🛡️ Safety Features Ratings Crash Test Results: N/A (Motorcycle safety ratings differ from automotive; focus is on design and component integrity). Active Features Braking System: Front and rear disc brakes, often with ABS as an optional feature on some models/markets. Passive Features Frame Construction: Durable frame designed for stability and rider control. 💡 Technology Features Infotainment Dashboard Display: Digital LCD instrument cluster displaying speed, RPM, fuel level, odometer, trip meters, and various indicator lights. Driver Assistance ABS: Anti-lock Braking System may be an optional feature depending on the specific model variant and market. Mentioned in manual if applicable. Connectivity Bluetooth Connectivity:...