🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Variant: Standard Production Years Covered: 1999-2003 Codes Chassis Codes: AP06, AP06A, AP06B 👋 Introduction Market Position Segment: Lightweight sport motorcycle segment. Target Audience: Enthusiast riders, track day participants, and owners seeking in-depth maintenance knowledge. Competitive Analysis Competitors: Yamaha YZF-R125 (later models), Honda CBR125R, Suzuki GSX-R125 (later models), Cagiva Mito 125. Key Features Vehicle Design: Sharp, aggressive styling mimicking larger sportbikes, agile handling, and a potent two-stroke engine. Manual Value Proposition: Empowers owners to perform complex maintenance and repairs, saving on dealership costs and ensuring optimal performance. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service and repair for the Aprilia RS125 (1999-2003). Specific Coverage: Engine, transmission, chassis, electrical system, bodywork, suspension, brakes, cooling, fuel system, emissions control. Page Count Estimated Page Count: 400+ Manual Type Type: Workshop Manual / Service Repair Manual Language Language: English Format Format: Digital (likely PDF, based on common digital manual distribution) 📖 Manual Coverage Systems Covered Engine System: Detailed information on the Rotax 125cc two-stroke engine, including disassembly, assembly, troubleshooting, and component specifications. Fuel System: Carburetor adjustment and overhaul (likely Dell'Orto PHBH/PHVA), fuel lines, fuel pump (if applicable), oil injection system. Cooling System: Radiator, coolant, hoses, water pump, thermostat operation and maintenance. Transmission System: Gearbox operation, clutch service, chain and sprockets maintenance, gear oil specifications and change intervals. Electrical System: Wiring diagrams, battery service, ignition system troubleshooting, lighting, starter motor, indicators, and instrument cluster. Suspension System: Front fork service (e.g., Marzocchi), rear shock absorber inspection and adjustment, spring and damper specifications. Braking System: Front and rear brake caliper overhaul, master cylinder service, brake fluid specifications and bleeding procedures, pad replacement. Chassis And Frame: Frame inspection, steering head bearing service, swingarm maintenance, wheel bearing replacement. Bodywork And Trim: Fairing removal and installation, seat, fuel tank, and component fastener torque specifications. Procedures Included Engine Overhaul: Complete engine disassembly, inspection, cleaning, reassembly, and tuning procedures. Scheduled Maintenance: Routine maintenance tasks such as oil changes, spark plug replacement, air filter cleaning, chain lubrication, and brake checks. Troubleshooting Guides: Systematic diagnostic procedures for common issues encountered with the RS125. Carburetor Tuning: Detailed instructions for adjusting and rebuilding the carburetor for optimal performance. Electrical Diagnostics: Step-by-step guides for diagnosing electrical faults using wiring diagrams and test equipment. Technical Depth Depth: Full workshop level, suitable for professional technicians and experienced DIY mechanics. Diagnostic Capabilities: Includes troubleshooting charts, fault code interpretation (if applicable), and component testing procedures. Repair Procedures: Detailed instructions for component removal, repair, and installation, often with torque specifications. 📊 Manual Specifications File Format Format Details: Likely PDF, offering searchability and accessibility across devices. Print Quality Quality: Assumed high quality, as the product description states manuals have been tested and read through. Binding Type Binding: Not applicable for digital format; if printed, typically comb or spiral bound for lay-flat use. Paper Type Paper: Not applicable for digital format. ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: 12.5:1 (approx.) Valve Train: Rotax 'RAVE' Exhaust System (electronically controlled exhaust port timing) Performance Horsepower Output: Approx. 30-33 HP (depending on market regulations and tuning) Torque Output: Approx. 20-22 Nm Fuel System Carburetor Model: Dell'Orto PHBH 28 or PHVA 28 (common variants) Fuel Type: Unleaded gasoline (minimum 95 RON) Oil Delivery: Automatic oil injection system 🔧 Transmission Standard Type: 6-speed constant mesh gearbox Clutch Type: Wet multi-plate clutch Features Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 720 mm Height: Approx. 1100 mm Weights Dry Weight: Approx. 130 kg Fuel Tank Capacity: Approx. 11.5 Liters 🛡️ Safety Features Ratings Safety Certification: CE certified (common for European market motorcycles of this era) Active Features Brakes: Front: Single disc brake with 4-piston caliper; Rear: Single disc brake with 2-piston caliper. Tires: Sport-oriented tires, typically 110/70-17 front and 150/60-17 rear. Passive Features Lighting: Halogen headlamp, LED taillight. 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, speedometer, odometer, trip meter, and warning lights. May include a basic LCD for fuel level or clock. Driver Assistance ABS: ABS was not typically standard or commonly available on this model during these years. Connectivity Connectivity Features: None (no Bluetooth, smartphone integration, etc.) 🔧 Maintenance Service Intervals Oil Change: Engine oil: Every 3,000-5,000 km or annually. Gearbox oil: Every 6,000-10,000 km or annually. Spark Plug Replacement: Every 6,000-8,000 km Air Filter Cleaning: Every 3,000-4,000 km, or as needed based on operating conditions. Chain Maintenance: Lubricate and adjust chain tension every 500-1000 km. Fluid Specifications Engine Oil: Two-stroke premix oil (e.g., Motul 710 2T, Castrol Power 1 TTS) or specified Aprilia 2T oil for injection system. Gearbox Oil: SAE 80W/90 API GL-4 or GL-5 gear oil (approx. 0.8 Liters) Coolant: 50/50 mix of ethylene glycol-based antifreeze and distilled water. Brake Fluid: DOT 4 Known Issues...