🏷️ Basic Information Identification Make: Aprilia Model: RS4 125 Year: 2011 Vehicle Type: Sportbike Generation Generation Designation: First Generation RS4 125 👋 Introduction Market Position Market Segment: Entry-level sportbike segment, popular for new riders and track day enthusiasts due to its performance and handling. Competitive Analysis Key Competitors 2011: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125. Key Features Bike Key Features: Aggressive styling derived from larger Aprilia sportbikes, advanced chassis geometry, powerful for its displacement. Manual Utility Value Proposition: This comprehensive manual empowers owners and technicians with the precise knowledge required for accurate diagnostics, efficient maintenance, and reliable repairs, saving time and money while ensuring optimal performance and longevity of the Aprilia RS4 125. 📋 Manual Details Coverage Areas Covered Systems Overview: Comprehensive coverage of all major mechanical, electrical, and bodywork systems, including detailed diagnostic and repair procedures. Page Count Page Count: 293 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Service: Complete engine disassembly, assembly, inspection, and repair procedures, including cylinder head, pistons, crankshaft, and lubrication system. Cooling System: Radiator, water pump, thermostat, coolant flow, and bleed procedures. Fuel System: Fuel tank, fuel pump, injectors, throttle body, and related sensors. Exhaust System: Exhaust manifold, catalytic converter, mufflers, and lambda sensors. Transmission And Drivetrain: Clutch operation, gearbox internal inspection and repair, final drive (chain and sprockets). Brakes: Hydraulic brake system, brake calipers, master cylinders, brake discs, brake pads, bleeding procedures, ABS components (if applicable). Suspension Front: Telescopic front fork disassembly, assembly, oil change, and seal replacement. Suspension Rear: Monoshock rear suspension system, linkage, adjustment, and shock absorber service. Wheels And Tires: Wheel bearing inspection and replacement, tire mounting and balancing, valve stem replacement. Electrical System: Battery, charging system (alternator/stator, regulator/rectifier), ignition system, starter motor, lighting system, instrumentation, ECU, wiring harnesses. Bodywork And Fairings: Removal and installation of all body panels, seat, fuel tank cover, and minor trim pieces. Chassis And Frame: Frame inspection, steering head bearing service, swingarm removal and inspection. Procedures Included Maintenance Procedures: Routine inspections, oil changes, filter replacements, spark plug replacement, chain adjustment, brake pad inspection and replacement. Diagnostic Procedures: Systematic troubleshooting guides for common and uncommon issues, fault code interpretation (if applicable), circuit testing. Repair Procedures: Detailed step-by-step instructions for component removal, repair, and reinstallation for all covered systems. Troubleshooting: Dedicated sections for diagnosing and resolving performance issues, electrical faults, and mechanical problems. Wiring Diagrams: Comprehensive electrical wiring diagrams for all vehicle systems, aiding in electrical troubleshooting and repair. Technical Depth Depth Of Coverage: In-depth, factory-level detail suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and gearbox rebuilds. 📊 Manual Specifications File Format File Format Details: Digital PDF format, easily navigable with clickable links for sections and diagrams. Print Quality Print Quality Notes: High-resolution scans of original factory documentation, ensuring clear text and legible diagrams for printing. Binding Type Binding Type: Not Applicable (Digital Format) Paper Type Paper Type: Not Applicable (Digital Format) Compatibility Software Requirements: Requires Adobe Acrobat Reader or compatible PDF viewer. Operating System Compatibility: Compatible with all versions of Windows and macOS. ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, four-stroke, liquid-cooled, DOHC Displacement: 124.2 cc Bore X Stroke: 58 mm x 47 mm Compression Ratio: 12.5:1 Performance Horsepower Peak: 15 hp (11 kW) @ 10,750 rpm (approximate, dependent on regulations) Torque Peak: 10.5 Nm @ 8,500 rpm (approximate) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Dell'Orto throttle body Ignition Ignition System: Electronic ignition with variable timing Lubrication Lubrication System: Forced lubrication with wet sump 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet, multi-plate Features Gear Ratios: Specific ratios detailed within the manual for each gear. Drivetrain Final Drive: Chain drive 📐 Dimensions Exterior Length: 2030 mm (approx.) Width: 770 mm (approx.) Height: 1135 mm (approx.) Weights Dry Weight: 141 kg (approx.) Wet Weight: 155 kg (approx.) Fuel Tank Capacity: 13 Liters Wheelbase Wheelbase: 1375 mm (approx.) 🛡️ Safety Features Ratings Safety Ratings: As a 125cc motorcycle, specific crash ratings are not typically issued in the same manner as automobiles. Focus is on rider active safety features and responsible riding practices. Active Features Braking System Type: Front: Radial-mount 4-piston caliper with 300mm disc; Rear: 2-piston caliper with 220mm disc. Suspension Features: 37mm USD (Upside-Down) front forks, monoshock rear suspension for precise handling and stability. Passive Features Frame Type: Aluminum perimeter frame providing excellent rigidity and rider feedback. 💡 Technology Features Infotainment Instrument Cluster: Digital LCD display providing speed, RPM, fuel level, odometer, trip meters, clock, and warning lights. Includes lap timer functionality. Driver Assistance ABS Availability: ABS was an optional feature on some models, and the manual would cover its specific components and troubleshooting. Connectivity Connectivity Features: No advanced connectivity features typical of modern motorcycles (e.g., Bluetooth, smartphone integration)...