🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Applicable Years: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Codes Chassis Codes: Rotax 122 (primary) 👋 Introduction Market Position Segment: Lightweight sportbike, entry-level performance motorcycle. Competitive Analysis Competitors: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125 (though some later models may overlap). Key Features Racing Heritage: Directly influenced by Aprilia's racing experience, offering performance typically found in larger displacement bikes. Design: Aggressive, full-fairing sportbike styling, mimicking larger Aprilias like the RSV Mille. Engine Technology: Advanced two-stroke technology for its class, delivering strong power output. 📋 Manual Details Coverage Areas Primary Coverage: Factory Service Repair Manual Page Count Estimated Page Count: 300-400 (estimated, as specific PDF page count not provided) Manual Type Manual Type: Comprehensive Service and Repair Manual Language Language: English Format Format: Digital (PDF Download) 📖 Manual Coverage Systems Covered Engine: Engine overhaul, top-end rebuild, bottom-end assembly, cylinder head, piston, connecting rod, crankshaft, valve timing (where applicable), decarbonization, cooling system. Fuel System: Carburetor tuning and rebuilding (Dell'Orto PHBH, PHVA series), fuel pump, fuel lines, fuel tank maintenance. Ignition System: CDI unit, spark plug specifications, ignition timing, stator and rotor testing. Transmission: Clutch operation and adjustment, gearbox disassembly and reassembly, gear selection mechanism, lubrication. Brakes: Front and rear brake caliper service, master cylinder overhaul, brake fluid replacement and bleeding, pad and disc inspection and replacement. Suspension: Front fork (Marzocchi, Paioli) service, seal replacement, oil level and type specifications, rear shock absorber adjustment and replacement. Electrical System: Wiring diagrams, lighting circuits, battery maintenance and charging, starter motor, alternator, fuses, relays, instrumentation. Frame And Bodywork: Chassis inspection, fairing removal and installation, seat maintenance, stand maintenance, wheel and tire service. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, chain adjustment, brake checks, coolant checks. Troubleshooting: Diagnostic charts for common issues, symptoms and remedies for engine, electrical, and chassis problems. Repair: Step-by-step instructions for component removal, repair, and reinstallation across all major systems. Diagnostics: Electrical system testing, compression testing, diagnostic fault finding. Technical Depth Depth: Comprehensive, covering basic maintenance to full engine and transmission rebuilds. Suitable for DIY mechanics and professional technicians. 📊 Manual Specifications File Format File Format: PDF Print Quality Searchability: Likely text-searchable (common for factory PDFs) Image Quality: High-resolution diagrams and photographs (typical for factory manuals) Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder, reed valve induction. Engine Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: Approx. 12.0:1 Power Output: Approx. 30-34 hp @ 11,750 rpm (varies by market and specific model year) Torque: Approx. 18-20 Nm @ 10,500 rpm (varies) Performance Top Speed: Approx. 160-170 km/h (electronically limited in some markets) Fuel System Carburetor: Dell'Orto PHBH 28 (early models), Dell'Orto PHVA 30 (later models), or similar. Fuel Type: Unleaded gasoline (min 95 octane recommended) Oil Delivery: Separate oil injection system (mixture of gasoline and 2-stroke oil). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet multi-plate Features Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 720 mm Height: Approx. 1060 mm Wheelbase: Approx. 1340 mm Weights Dry Weight: Approx. 130 kg Fuel Capacity: Approx. 13 Liters 🛡️ Safety Features Ratings Safety Ratings: Not typically subject to automotive-style crash safety ratings; focus is on rider safety and handling. Active Features Braking System: Dual-piston front caliper with 320mm disc, single-piston rear caliper with 220mm disc. (Later models may feature different configurations or ABS). Passive Features Lighting: Halogen headlamp, LED taillight. 💡 Technology Features Infotainment Infotainment System: N/A (This is a performance motorcycle, no advanced infotainment system). Driver Assistance Driver Assistance: N/A (Focus on rider control and handling). Connectivity Connectivity: N/A Instrumentation Instrument Cluster: Analog tachometer, speedometer, odometer, trip meter, temperature gauge, warning lights. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-4,000 km or annually (engine oil; gearbox oil interval may differ). Spark Plug Replacement: Every 5,000-8,000 km (depending on plug type and usage). Air Filter Cleaning: Every 2,000-3,000 km, or as needed based on operating conditions. Brake Fluid Flush: Every 2 years or 15,000-20,000 km. Fluid Specifications Engine Oil Type: 2-stroke synthetic oil specifically designed for high-performance motorcycles (e.g., Motul 7100 2T, Castrol Power 1 Racing 2T). Gearbox Oil Type: API GL-4 or GL-5, SAE 75W/90 or 80W/90 synthetic gear oil. Coolant Type: Ethylene glycol-based coolant with corrosion inhibitors, mixed 50/50 with distilled water. Known Issues Carburetor Wear: Dell'Orto carburetors can wear over time, leading to tuning difficulties and poor running. Rebuild kits are essential. Exhaust Valve Sticking: The automatic exhaust power valve can get carboned up and stick, affecting engine performance, especially at lower RPMs. Regular cleaning is required. Clutch Slipping: Can occur with high mileage or aggressive use. Clutch plates may need replacement. Front Fork Seals:...