🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Variant: All Models Codes Production Years Covered: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 👋 Introduction Market Position Segment: Lightweight sportbike, beginner/intermediate performance motorcycle Competitive Analysis Key Competitors: Yamaha YZF-R125 (later models), Honda CBR125R (later models), Cagiva Mito 125, Suzuki RG125. Key Features Heritage: Renowned for its sharp styling, track-inspired performance, and engaging riding dynamics, often mimicking its larger Aprilia brethren. Manual Value: Essential resource for owners and technicians to maintain, diagnose, and repair the Aprilia RS125, ensuring longevity and optimal performance. 📋 Manual Details Coverage Areas Coverage Scope: All mechanical and electrical repairs, A-Z Page Count Estimated Page Count: Extensive (Actual page count not specified, but described as 'tons of detailed pictures & diagrams') Manual Type Type: Service Repair Workshop Manual Language Language: English (Assumed based on typical market and product description language) Format Format: Digital (Printable Pages) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, including top-end (cylinder, piston, rings), bottom-end (crankshaft, bearings), cooling system (radiator, water pump), lubrication system (oil pump, oil passages), fuel delivery (carburetor, fuel lines, petcock), ignition system (CDI, spark plug, coil), exhaust system. Transmission: Gearbox disassembly and reassembly, clutch operation, gear shift mechanism, lubrication and maintenance. Electrical System: Wiring diagrams, lighting systems (headlight, taillight, indicators), charging system (stator, rectifier/regulator), starting system (starter motor, battery), ignition system components, instrument cluster, switches, fuses. Chassis And Suspension: Front forks (disassembly, seal replacement, oil levels), rear shock absorber, swingarm, bearings, steering head assembly, wheel bearings, brake system (discs, calipers, master cylinders, lines), clutch and throttle cables. Bodywork: Fairing removal and installation, seat, fuel tank, fenders, minor body panel repairs. Procedures Included Maintenance: Routine servicing, oil changes, filter replacements, spark plug checks, chain adjustment and lubrication, brake pad replacement, coolant checks and replacement. Troubleshooting: Diagnostic procedures for common running issues, electrical faults, starting problems, and performance issues. Repair: Detailed step-by-step instructions for component removal, replacement, and overhaul, covering all major mechanical and electrical systems. Technical Specifications: Torque specifications, engine timings, fluid capacities, clearances, and settings for all major components. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine rebuilds and complex electrical diagnostics. 📊 Manual Specifications File Format Format: Digital (Likely PDF) Print Quality Printability: All pages printable Binding Type Binding: Not Applicable (Digital Format) Paper Type Paper Type: Not Applicable (Digital Format) Visuals Illustrations: Tons of detailed pictures and diagrams Searchability Text Searchability: Likely text-searchable if a high-quality PDF ⚙️ Engine Specifications Primary Engine Type: Two-stroke, single-cylinder, liquid-cooled Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm (Typical for Rotax 122 engine) Compression Ratio: Approx. 8.4:1 (Varies slightly by year/variant) Power Output: Typically around 30-33 hp at 10,500 rpm (Restricted versions for learner riders may have lower outputs) Torque: Approx. 18-20 Nm (13-15 lb-ft) at 9,500 rpm Valvetrain: Reed valve intake, exhaust power valve (Rotax 'Powerjet' or similar system) Fuel System Carburetor: Dell'Orto PHBH 28 or similar (28mm bore), often with electric power jet Fuel Type: Unleaded gasoline, minimum 95 RON (Recommended 98 RON for optimal performance) Lubrication System: Pre-mix or separate oil injection system (Oil Pump driven by crank) Cooling System Type: Liquid-cooled Engine Codes Engine Family: Rotax 122 (common for this era Aprilia) 🔧 Transmission Standard Type: 6-speed constant mesh Gear Ratios: Specific ratios vary by year, but generally close-ratio for sporty performance (Manual will detail exact ratios). Clutch: Wet, multi-plate, cable-actuated Features Final Drive: Chain drive Fluid Specifications Gearbox Oil: API GL-4, SAE 75W/90 or 10W/40 motorcycle-specific gearbox oil (Refer to manual for exact Aprilia specification). 📐 Dimensions Exterior Length: Approx. 1,970 mm (Varies slightly by year) Width: Approx. 720 mm (Varies slightly by year) Height: Approx. 1,110 mm (Varies slightly by year) Wheelbase: Approx. 1,375 mm (Varies slightly by year) Weights Dry Weight: Approx. 130-135 kg Wet Weight: Approx. 145-150 kg (with all fluids) Fuel Capacity: Approx. 13 liters (including reserve) 🛡️ Safety Features Ratings Classification: N/A (Motorcycles typically not rated by agencies like NHTSA/Euro NCAP in the same way as cars) Active Features Braking System: Dual disc front brake with dual-piston calipers, single disc rear brake with dual-piston caliper. (Later models may feature ABS, but typically not on early 2000s 125cc models). Tires: Sport-oriented radial tires. Passive Features Frame: Aluminum twin-spar frame Lighting: Halogen headlight, LED taillight (likely on later models). 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, speedometer, odometer, trip meter, coolant temperature warning light, oil level warning light (for oil injection system). Driver Assistance ABS: Anti-lock Braking System (ABS) was not standard or widely available on the RS125 models in this specific year range. Manual would cover non-ABS systems. Connectivity Electronic Features: Primarily mechanical systems with basic electrical ignition and lighting. No advanced electronic rider aids or connectivity features. 🔧 Maintenance Service Intervals Oil Change: Every 3,000-5,000 km or annually (refer...