🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Variant: Sport Production Generation Generation Code: Rotax 122 Codes Engine Family: Rotax 122 👋 Introduction Market Position Target Audience: Do-it-yourselfer (DIY) and experienced mechanics Value Proposition: Inexpensive way to keep the motorcycle working properly, save on repair costs Competitive Analysis Manual Superiority: Considered the number one source for repair and service information for the specified model years. Key Features Completeness: 100% complete and intact, no missing/corrupt pages or sections. Accessibility: Searchable and bookmarked PDF for easy navigation and information retrieval. 📋 Manual Details Coverage Areas Covered Years: 1999, 2000, 2001, 2002, 2003 Page Count Estimated Page Count: High (exact number not specified, but described as 'complete') Manual Type Type: Official Service Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete tear down and rebuild, fuel system, lubrication, cooling, combustion, crankcase, piston, cylinder, crankshaft, balancer, cylinder head, valves, alternator, starter clutch Transmission Clutch: Gearbox, clutch, transmission system Chassis Suspension: Front wheel, steering system, rear wheel system, suspension Brakes: Braking system Electrical: Electrical system, battery, charging system, ignition system, electric starter, lights, meters, switches, wiring diagrams Bodywork Exhaust: Fenders, exhaust pipe, body panels, exhaust system, body & fixtures Wheels Tires: Wheels & Tyres Cooling System: Cooling system Fuel Injection: Fuel injection system Procedures Included Maintenance: Periodic checks & Adjustments, general maintenance Repair: Complete tear down and rebuild, detailed repair procedures for all systems Diagnostics: Troubleshooting, diagnostic procedures Torque Specs: Comprehensive torque specifications for all fasteners and critical components. Wiring Diagrams: Detailed wiring schematics for the entire electrical system. Technical Depth Depth: Comprehensive, covering complete disassembly to detailed component repair and system diagnostics Component Rebuild: Detailed instructions for complete rebuilds of engine, gearbox, suspension, and braking systems. 📊 Manual Specifications File Format Readability: Searchable, Bookmarked Software Requirements: Adobe PDF Reader, WinZip Zoom Capability: Yes, allows zooming in/out for detailed viewing. Print Quality Printability: Fully Printable Visuals: Hundreds of photos, detailed illustrations, exploded diagrams, drawings Binding Type Delivery Format: Instant Download (Digital) Paper Type Durability: Not applicable (Digital Format) Compatibility Operating Systems: Compatible with all versions of Windows & Mac. ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Engine Displacement: 124.8 cc (approximate) Engine Code: Rotax 122 (common for this era) Performance Horsepower: Approx. 30-34 HP (varies by market and specific tune) Torque: Specific torque figures available within the manual Fuel System Fuel Delivery: Carburetor (e.g., Dell'Orto PHBH 28/30, Mikuni VM28) or Fuel Injection (depending on market variant and year, though the manual lists 'Fuel injection system') Cooling System Cooling Method: Liquid-cooled 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Features Clutch Type: Wet, multi-plate 📐 Dimensions Exterior Body Style: Full faired sportbike Weights Dry Weight: Approx. 147 kg (324 lbs) - exact figure varies slightly by year 🛡️ Safety Features Active Features Braking System: Front: Disc brake, Rear: Disc brake (specific caliper and rotor sizes detailed in manual) Passive Features Frame Construction: Aluminum alloy twin-spar frame 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, speedometer, coolant temperature gauge, indicator lights (details in Electrical System section). Driver Assistance ABS: Not typically equipped on this model, but manual may cover braking system diagnostics. Connectivity Charging System: Covers alternator and battery charging system components and troubleshooting. 🔧 Maintenance Service Intervals Oil Change: Specific intervals for 2-stroke oil and gearbox oil detailed in manual. Spark Plug Service: Intervals for inspection and replacement provided. Air Filter Cleaning: Procedures and frequency for air filter maintenance included. Fluid Specifications Engine Oil: Specifications for 2-stroke premix or oil injection system oil provided. Gearbox Oil: Recommended type and quantity for the transmission gearbox specified. Coolant: Type and mixture ratio for the liquid cooling system detailed. Known Issues Top End Wear: Common for high-performance 2-strokes; manual provides procedures for piston, ring, and cylinder inspection/replacement. Reed Valve Performance: Manual covers inspection and potential replacement of reed valves for optimal performance. Carburetor Tuning: Detailed guidance on carburetor settings and troubleshooting is a key feature. 📚 Vehicle History Brand Heritage Manufacturer Reputation: Aprilia is renowned for its racing pedigree and performance-oriented sportbikes. Model Evolution Rs125 Legacy: The RS125 is a highly regarded entry-level sportbike, often used in track days and racing series for its sharp handling and potent two-stroke engine. Production Manufacturing Location: Italy 🏆 Awards & Recognition Recognitions Model Popularity: The RS125 is widely recognized as a benchmark in the 125cc sportbike category for its performance and handling.