🏷️ Basic Information Identification Make: Aprilia Model: RS125 Year: 1993-2002 Codes Chassis Code Range: Rotax 122 (primarily), Rotax 123 for earlier models 👋 Introduction Market Position Market Segment: Lightweight sportbike, popular in European markets for its performance and handling, often used in track days and novice racing. Target Audience: Enthusiast owners, DIY mechanics, track day participants, and mechanics specializing in Italian motorcycles. Competitive Analysis Key Competitors: Yamaha YZF-R125 (later models), Cagiva Mito 125, Honda RS125 (racing variant), Suzuki GSX-R125 (later models) Key Features Model Highlights: 2-stroke engine, aggressive styling, sharp handling, lightweight chassis, capable for both street and occasional track use. 📋 Manual Details Coverage Areas Applicable Models: Aprilia RS125 models manufactured between 1993 and 2002 Trim Levels Covered: All standard RS125 variants within the specified year range. Page Count Estimated Page Count: Varies by specific edition, typically 200-400 pages for comprehensive service manuals Manual Type Manual Type: Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, top-end rebuild, bottom-end assembly, cooling system, lubrication, fuel delivery, exhaust system Chassis Systems: Frame, suspension (front forks, rear shock), steering, wheels, brakes (front and rear), chain drive, swingarm Electrical System: Wiring diagrams, ignition system, lighting, charging system, starter motor, battery, instruments, switches Fuel System Details: Carburetor tuning, jetting information, float bowl adjustment, fuel pump operation (if applicable), fuel line routing and replacement. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment and lubrication, brake fluid checks, coolant checks, spark plug inspection/replacement Repair Procedures: Engine disassembly and reassembly, carburetor tuning and rebuilding, fork seal replacement, brake caliper overhaul, electrical component troubleshooting and replacement Troubleshooting: Diagnostic steps for common problems, electrical faults, engine performance issues, starting problems, running issues Engine Rebuild: Detailed step-by-step instructions for complete engine disassembly, inspection of components (crankshaft, bearings, seals, piston, cylinder), reassembly, and torque specifications. Suspension Service: Front fork oil change, seal replacement, spring inspection. Rear shock absorber inspection and adjustment procedures. Electrical Troubleshooting: Diagnosing electrical faults using wiring diagrams, testing components like stator, regulator, ignition coil, CDI unit, and switches. Technical Depth Technical Depth: Comprehensive, covering routine maintenance to major engine and chassis overhauls. Includes detailed diagrams and specifications. Diagrams And Illustrations: Includes exploded views of major components, wiring diagrams, troubleshooting flowcharts, and detailed illustrations of repair processes. Torque Specifications: Includes critical torque values for engine components, chassis fasteners, brake caliper bolts, and suspension mounting hardware. 📊 Manual Specifications File Format Compatibility: All Versions of Windows & Mac Software Requirement: Adobe PDF Reader Print Quality Print Quality Notes: As a digital PDF, quality is dependent on the source scan. Reputable sources provide high-resolution, clear text and diagrams. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, liquid-cooled, single-cylinder Engine Displacement: 124.8 cc (cubic centimeters) Bore X Stroke: 54 mm x 54.5 mm (typical) Compression Ratio: Approximately 7.5:1 to 8.0:1 (varies by specific Rotax variant) Engine Code: Rotax 122 (common for this era, though variations exist) Engine Configuration: Single cylinder, 2-stroke Performance Horsepower: Approximately 30-34 hp (horsepower) at 11,000-12,000 RPM (peak output, depending on market and specific tuning) Torque: Approximately 20-22 Nm (Newton-meters) at 10,000-11,000 RPM Cooling System Type: Liquid-cooled Fuel System Carburetor Type: Dell'Orto PHBH 28 or PHBH 30 (common) Fuel Type: Unleaded gasoline (min 95 RON recommended) Oil Mixing: Pre-mix or oil injection system (automatic oil pump) 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Features Clutch Type: Wet multi-plate Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1960 mm (77.2 inches) Width: Approx. 700 mm (27.6 inches) Height: Approx. 1050 mm (41.3 inches) Wheelbase: Approx. 1330 mm (52.4 inches) Seat Height: Approx. 810 mm (31.9 inches) Weights Dry Weight: Approx. 120-130 kg (265-287 lbs) Fuel Tank Capacity: Approx. 7.5 liters (1.98 US gallons) Gross Vehicle Weight Rating: Varies, typically around 250-280 kg (550-617 lbs) including rider and luggage 🛡️ Safety Features Active Features Braking System: Front: Single disc brake with multi-piston caliper; Rear: Disc brake with single-piston caliper Passive Features Frame Type: Aluminum alloy twin-spar frame 💡 Technology Features Infotainment Instrumentation: Analog tachometer, speedometer, odometer, engine temperature gauge, neutral indicator, turn signal indicators. Driver Assistance Assistance Features: N/A (typical for this era of 125cc sportbike) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km (1,800-3,000 miles) or annually, check manual for specifics Spark Plug Inspection: Every 3,000-6,000 km (1,800-3,700 miles) Chain Maintenance: Lubricate and adjust chain every 500-1,000 km (300-600 miles) and as needed Fluid Specifications Engine Oil Type: 2-stroke engine oil (specific API TC, JASO FD/FC rated) for oil injection system; or mix ratio for pre-mix (e.g., 50:1 with high-quality 2T oil). Coolant Type: Ethylene glycol based antifreeze (50% water, 50% coolant) Brake Fluid Type: DOT 4 Gearbox Oil Type: SAE 75W/80W or 80W API GL-4 gear oil Known Issues...