🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Year Start: 2006 Model Year End: Present (with updates) Codes Chassis Codes: RP (various suffixes depending on year/market) 👋 Introduction Market Position Segment: Lightweight Sportbike / Performance Motorcycle Target Audience: Enthusiast riders, aspiring racers, budget-conscious performance riders, DIY mechanics. Competitive Analysis Key Competitors: Yamaha YZF-R125, Honda CBR125R, KTM RC125, Suzuki GSX-R125. Unique Selling Points: Renowned Aprilia racing heritage, aggressive styling, typically a potent 2-stroke engine (pre-2008 models and some later variations), capable chassis and suspension for its class. Key Features Manual Features: Easy to navigate, clear diagrams, step-by-step instructions, troubleshooting tips, comprehensive coverage. Vehicle Features Highlighted: High-performance engine for its displacement, sharp handling, track-day capability, customizable options. 📋 Manual Details Coverage Areas Countries: Global (all markets where RS125 is sold) Page Count Estimated Page Count: High (typically 500+ pages for comprehensive manuals) Manual Type Manual Type: Workshop Repair Manual / Service Manual Language Language: English Format Format: Digital Download (PDF/eBook) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, top-end (cylinder, piston, head), bottom-end (crankshaft, connecting rod, bearings), timing, lubrication system. Fuel System: Carburetor (Dell'Orto PHBH/PHBL typically) tuning, cleaning, overhaul, fuel pump, fuel lines, fuel tank maintenance. Cooling System: Radiator, hoses, water pump, thermostat, coolant specifications and bleeding procedures. Ignition System: CDI unit, ignition coils, spark plugs, timing checks, stator and rotor testing. Exhaust System: Expansion chamber, silencer, gasket replacement, performance tuning considerations. Transmission: 6-speed gearbox, clutch (wet multi-plate), gear selection mechanism, gearbox oil specifications and change intervals. Frame And Suspension: Frame inspection, front fork (upside-down type, often Marzocchi or Paioli) overhaul, fork oil specifications and levels, rear shock absorber adjustment and overhaul. Brakes: Front and rear disc brakes, brake caliper service, hydraulic system bleeding, brake fluid specifications, pad replacement, rotor inspection. Electrical System: Wiring diagrams, battery maintenance, lighting system (headlights, taillights, indicators), starter motor, charging system (alternator/stator). Bodywork And Fairings: Fairing removal and installation, seat, fuel tank, fenders, graphics. Procedures Included Preventative Maintenance: Oil changes, filter replacements, chain adjustment, brake checks, tire pressure checks, coolant checks, spark plug replacement. Troubleshooting: Diagnostic charts for common starting issues, running problems, electrical faults, and performance degradation. Engine Rebuild: Detailed step-by-step instructions for complete engine disassembly, inspection, part replacement (piston rings, gaskets, bearings), and reassembly. Suspension Overhaul: Fork seal replacement, fork oil change, shock absorber service. Clutch Replacement: Service and replacement of clutch plates and springs. Brake System Service: Fluid flushing, caliper rebuild, pad and rotor replacement. Electrical Component Testing: Testing of starter, alternator, CDI unit, and other electrical components using multimeters. Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine rebuilds and advanced diagnostics) Diagnostic Capabilities: Detailed troubleshooting guides, wiring diagrams, and component testing procedures. Torque Specifications: All critical bolt and nut torque values provided for engine, chassis, and suspension components. Clearances And Tolerances: Specifications for piston-to-cylinder wall, bearing clearances, valve clearances (if applicable to specific models/years), etc. 📊 Manual Specifications File Format File Format: PDF (Searchable Text, Printable Pages) Print Quality Print Quality: High Resolution (suitable for printing individual pages or the entire manual) Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder (typically Rotax 122 or similar variants for 2006 onwards, though some later models may have 4-stroke variants depending on market). Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 122) Displacement: 124.8 cc Compression Ratio: Approximately 11.5:1 to 12.5:1 (varies slightly by model year) Valve Mechanism: Reed valve intake, exhaust power valve (Rotax 'V' or 'APTS' system). Performance Horsepower: Approx. 15 kW (20.4 PS) @ 9,000 rpm (Europe restricted for A1 license); unrestricted versions can be significantly higher, up to 30-33 hp. Torque: Approx. 12.2 Nm (9 lb-ft) @ 8,000 rpm (restricted); higher for unrestricted. Fuel System Carburetor Model: Dell'Orto PHBH 28 or PHBL 26 (depending on market and emissions regulations) Fuel Type: Unleaded gasoline, minimum 95 RON (Octane Rating) Oil Mixture: Premixed (manual) or Autolube (oil injection system) depending on model year/market. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet multi-plate Features Gear Ratios: Specific gear ratios are detailed within the manual, crucial for performance tuning. Gearbox Oil: Typically SAE 75W-90 or SAE 10W-40 API GL-4 motorcycle gear oil. 📐 Dimensions Exterior Length: Approx. 1,950 mm (varies slightly) Width: Approx. 720 mm (at handlebars) Height: Approx. 1,135 mm (at seat) Weights Dry Weight: Approx. 115-120 kg (varies) Wet Weight: Approx. 130-135 kg (with fluids) 🛡️ Safety Features Ratings Safety Certification: Meets relevant European (CE) and international safety standards for motorcycles. Active Features Braking System: Hydraulic disc brakes front and rear, often with braided steel lines on performance variants. Passive Features Chassis Design: Sturdy perimeter frame (often aluminum alloy) for stability and rigidity. 💡 Technology Features Infotainment Infotainment System: Basic analog instrumentation (speedometer, tachometer, fuel...