🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Years Covered: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Codes Engine Code Typical: Rotax 122 (varies by sub-model and market) 👋 Introduction Market Position Segment: Lightweight Sportbike / Supersport Motorcycle Target Audience: Enthusiast riders, DIY mechanics, and service technicians seeking in-depth repair and maintenance knowledge for the Aprilia RS125. Competitive Analysis Key Competitors: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125, Kawasaki Ninja 125 (depending on market and year). Key Features Performance Focus: The RS125 is renowned for its race-derived chassis and potent two-stroke engine, offering a sharp riding experience typically outperforming its four-stroke rivals in its class. 📋 Manual Details Coverage Areas Primary Coverage: Complete Workshop Service and Repair Page Count Estimated Pages: 300-500 (estimated for a comprehensive workshop manual) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English (presumed, standard for this type of manual) Format Format: Digital Downloadable (PDF) File Format File Type: PDF (Portable Document Format) Print Quality Printability: Printable (designed for easy access to information, allowing users to print specific sections). Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) 📖 Manual Coverage Systems Covered Engine: Detailed breakdown of the Rotax 122 two-stroke engine, including top-end, bottom-end, lubrication, cooling, and exhaust systems. Transmission: Manual gearbox, clutch operation, gear selection mechanisms, and final drive assembly. Chassis: Frame construction, steering head, swingarm, suspension (front forks and rear monoshock), and wheel bearings. Brakes: Hydraulic front and rear brake systems, including caliper overhaul, master cylinders, brake lines, and fluid specifications. Electrical: Complete wiring diagrams, ignition system, lighting, charging system (stator, regulator/rectifier), starter motor, and battery maintenance. Fuel System: Carburetor (Dell'Orto PHBH 28 recommended) tuning and overhaul, fuel lines, fuel tank, and fuel tap. Cooling System: Liquid cooling system, radiator, water pump, thermostat, and coolant specifications. Bodywork And Fairings: Removal and installation procedures for fairings, seat, fuel tank, and other body panels. Procedures Included Scheduled Maintenance: Routine checks, lubrication, filter replacements, spark plug replacement, and valve clearance checks (though less applicable for 2-stroke, focus on ignition timing/spark plug). Engine Rebuild: Complete engine disassembly, inspection, component replacement (pistons, rings, crankshaft, bearings), and reassembly. Troubleshooting: Diagnostic procedures for common performance issues, starting problems, electrical faults, and mechanical failures. Suspension Overhaul: Fork seal replacement, oil changes, rear shock absorber inspection and servicing. Carburetor Tuning: Jetting, idle speed adjustment, float height, and mixture screw settings for optimal performance. Electrical Diagnostics: Using multimeters, checking continuity, voltage, and resistance in various circuits. Brake System Maintenance: Bleeding procedures, pad replacement, caliper service, and fluid flush. Technical Depth Depth Level: Comprehensive: from basic rider maintenance to complete engine and component rebuilds, including advanced diagnostics. ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled, reed-valve induction with power valve (Rotax 122). Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: Approx. 12.4:1 (varies by sub-model) Power Valve System: Rave (Rotax Automatic Vortex Exhaust) Performance Horsepower Est: Approx. 33-34 HP @ 11,000 RPM (depending on market restrictions and tuning) Torque Est: Approx. 20 Nm @ 10,000 RPM Fuel System Carburetor Model: Dell'Orto PHBH 28 RD (or similar, depending on market) Fuel Type: Unleaded gasoline (minimum 95 RON recommended) Fuel Tank Capacity Liters: Approx. 13 Liters Lubrication Lubrication System: Pre-mix or separate oil injection system (depending on sub-model). Recommended Oil Injection: High-quality 2-stroke synthetic oil (e.g., Motul 710 2T, Castrol Power RS 2T). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh manual gearbox. Features Clutch Type: Wet multi-plate clutch. Final Drive: Chain drive. 📐 Dimensions Exterior Length Mm: Approx. 1950 mm Width Mm: Approx. 730 mm Height Mm: Approx. 1100 mm Weights Dry Weight Kg: Approx. 132 kg Kerb Weight Kg: Approx. 145 kg (with fluids) Max Load Kg: Approx. 180 kg (rider + passenger + luggage) 🛡️ Safety Features Ratings Safety Ratings: Motorcycle safety standards compliance (no formal NCAP ratings for motorcycles). Active Features Braking System: High-performance hydraulic disc brakes front and rear (e.g., Brembo calipers often used). Tire Design: Sport-oriented tire profiles for excellent grip and lean angles. Passive Features Frame Construction: Sturdy aluminum alloy twin-spar frame for chassis rigidity and stability. 💡 Technology Features Infotainment Infotainment System: N/A (Focus on core motorcycle mechanics and performance, no advanced infotainment features expected for this era and class). Driver Assistance Driver Assistance Features: N/A (Focus on rider input and feedback). 🔧 Maintenance Service Intervals Oil Change Interval: Check and top-up 2-stroke oil as needed. Oil injection system filter recommended for service every ~5,000-7,500 km. Spark Plug Replacement: Recommended every ~5,000 km or as per manual inspection. Air Filter Cleaning: Recommended every ~3,000-5,000 km, depending on riding conditions. Chain Lubrication: Every ~500 km and after washing or riding in rain. Coolant Change: Recommended every 2 years or as per manual. Fluid Specifications Engine Oil: High-quality 2-stroke synthetic oil meeting API...