🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Model Variant: RS125 Years Covered: 1999-2004 Codes Product Code: APRILIA_RS_125_SERVICE_MANUAL_DOWNLOAD 👋 Introduction Market Position Segment: Lightweight Supersport / Performance Motorcycle Competitive Analysis Key Competitors Era: Yamaha YZF-R125 (later models), Honda CBR125R, Suzuki GSX-R125 (later models), Cagiva Mito 125 Key Features Design Inspiration: Technology derived from Aprilia's 125cc GP machines Aerodynamics: Re-styled after extensive wind-tunnel research for family resemblance to RSV1000 Factory Lighting: Twin halogen headlights Value Proposition Benefit To Owner: Save money on maintenance and repairs, ensure long-term performance 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Page Count Estimated Page Count: Not Specified (Comprehensive Coverage Implied) Manual Type Type: Workshop Manual / Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, overhaul, component testing, performance tuning Fuel System: Carburetor adjustment, fuel pump, fuel lines, tank maintenance Cooling System: Radiator, coolant, fan, water pump, bleeding procedures Lubrication: Oil pump, oil filter, lubrication points, oil specifications Chassis: Frame, suspension (front and rear), steering, wheels, tires, brakes Electrical System: Wiring diagrams, ignition system, lighting, battery, charging system, starter motor General Information: Vehicle identification, safety precautions, general maintenance guidelines Routine Maintenance: Scheduled checks, cleaning, adjustments Procedures Included Diagnostics: Troubleshooting guides, fault finding procedures Repair: Step-by-step repair instructions for all major components Disassembly And Assembly: Detailed exploded views and assembly sequences Adjustments: Carburetor, clutch, throttle, brake levers Technical Depth Depth: Comprehensive (from routine maintenance to complete engine rebuilds) 📊 Manual Specifications File Format Compatibility: All Versions of Windows & Mac Print Quality Printability: Printable without any restriction Binding Type Binding: Digital Download (PDF) Paper Type Paper Type: N/A (Digital) Software Requirements Reader: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled (Rotax 122 E4 variant common for these years) Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: Approximately 12.0:1 Performance Horsepower: Approx. 30-35 HP (variant dependent, restricted versions exist) Torque: Approx. 22-24 Nm Fuel System Carburetor: Dell'Orto PHBH 28 or similar (often with adjustable jetting) Fuel Type: Unleaded gasoline (min 95 RON recommended) Mixture Type: Oil injection for two-stroke lubrication (separate oil tank) 🔧 Transmission Standard Type: 6-speed constant mesh Clutch: Wet multi-plate Features Gear Ratios: Specific ratios provided in manual 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 720 mm Height: Approx. 1120 mm Weights Dry Weight: Approx. 140 kg Wet Weight: Approx. 155 kg (with fluids) 🛡️ Safety Features Ratings Certification: European homologation standards (CE) Active Features Braking System: Hydraulic disc brakes front and rear (often Brembo components) Front Brake Spec: Single 320mm disc, 4-piston caliper Rear Brake Spec: Single 220mm disc, 2-piston caliper Passive Features Frame Type: Aluminum twin-spar frame 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, digital speedometer, odometer, trip meter, coolant temperature warning light Driver Assistance Ride Modes: N/A (performance-oriented, no electronic ride modes) Connectivity Features: N/A (Focus on mechanical and electrical systems) 🔧 Maintenance Service Intervals Oil Change: Refer to manual for specific mileage/time intervals (typically 3,000-5,000 km for engine oil) Spark Plug Check: Refer to manual (e.g., 5,000-7,500 km) Chain Lubrication: Frequent (every 500-1000 km or after riding in wet conditions) Fluid Specifications Engine Oil Type: High-quality 2-stroke synthetic oil (meeting API TC or JASO FD standards, specific Aprilia recommendation in manual) Coolant Type: Ethylene glycol-based antifreeze with corrosion inhibitors (50/50 mix with distilled water) Brake Fluid Type: DOT 4 Transmission Oil Type: Specific gearbox oil (API GL-4 or GL-5, viscosity often 75W-90 or 80W-90), manual to specify Known Issues Common Problems Era: Carburetor tuning sensitivity, potential for exhaust power valve issues if not maintained, electrical connector corrosion Common Issues Maintenance Tips: Regular cleaning of the expansion chamber and exhaust power valve, proper jetting for atmospheric conditions, checking and cleaning the air filter regularly 📚 Vehicle History Brand Heritage Manufacturer: Aprilia S.p.A., Italy Model Evolution Significance: Iconic lightweight supersport, known for racing pedigree and performance for its class Production Production Period: Originally launched in the 1990s, with continuous updates through early 2000s 🏆 Awards & Recognition Recognitions Industry Acclaim: Praised for its handling, performance, and racing-inspired design in its class.