🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Designation: RS 125 Generation Generation Designation: First Generation (Rotax 122) Codes Engine Code Family: Rotax 122 E Chassis Code Family: RS125 👋 Introduction Market Position Segment: Lightweight Sportbike / Supersport Target Audience: Enthusiasts seeking performance in a manageable package, track day riders, commuters. Competitive Analysis Competitors: Yamaha YZF-R125 (later models), Honda CBR125R, Cagiva Mito 125. Key Features Performance Focus: Known for its potent 125cc two-stroke engine and sharp handling, offering a potent package for its class. Design: Aggressive 'superbike' styling, inspired by larger Aprilia RSV models. Manual Benefit: Empowers owners to perform maintenance and repairs, reducing reliance on costly dealership services and extending the motorcycle's lifespan. 📋 Manual Details Coverage Areas Product Name: APRILIA RS125 Service Repair Manual 1993-2002 Page Count Estimated Pages: 400+ Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, lubrication, cooling system, fuel system (carburetor/injection), ignition system, exhaust system, engine management. Transmission: Clutch assembly, gearbox (gear ratios, shifting mechanisms), final drive, lubrication. Chassis: Frame inspection and repair, suspension (front forks, rear shock absorber, linkages), steering system. Brakes: Front and rear brake systems (calipers, master cylinders, lines, discs), bleeding procedures, pad replacement. Electrical: Wiring diagrams, battery, charging system (stator, regulator/rectifier), lighting, instrumentation, starter motor, ignition coil, sensors. Fuel System: Carburetor types (Dell'Orto PHBH/PHVA), fuel tank, fuel lines, oil injection system (if applicable). Bodywork: Fairing removal and installation, seat, fuel tank, body panel fasteners. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, spark plug service, chain adjustment, brake fluid flush, coolant flush. Repair: Engine component replacement (pistons, rings, crankshaft, bearings), gearbox rebuild, carburetor overhaul, suspension rebuild, brake caliper servicing. Troubleshooting: Diagnostic procedures for common starting issues, running problems, electrical faults, braking issues. Specifications: Torque values for all fasteners, engine clearances, fluid capacities, tire pressures, electrical component specifications. Technical Depth Depth: Comprehensive, covering from basic rider maintenance to full engine and chassis rebuilds. Suitable for home mechanics and professional workshops. 📊 Manual Specifications File Format File Type: PDF Print Quality Quality: High-resolution scans suitable for printing, with clear text and legible diagrams. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Bore X Stroke: 54 mm x 54.5 mm Displacement: 124.8 cc (125cc class) Compression Ratio: 12.4:1 (typical, may vary by specific model year/variant) Valvetrain: Reed valve intake, exhaust power valve (Rotax ATAC system) Performance Horsepower: Approx. 30-33 HP (15kW regulated for learner license, unrestricted for open class) Torque: Approx. 20-22 Nm (15-16 lb-ft) Fuel System Carburetor Type: Dell'Orto PHBH 28 or PHVA 28 (depending on year/market) Fuel Type: Unleaded gasoline (minimum 95 RON) Oil Mixing: Automatic oil injection system (pre-mix in fuel also possible if system bypassed/removed) Cooling System Type: Liquid-cooled Coolant Type: Ethylene glycol-based antifreeze with corrosion inhibitors 🔧 Transmission Standard Type: 6-speed constant mesh Clutch: Wet multi-plate Final Drive: Chain drive Features Gear Ratios: Detailed in manual (specific ratios vary) Transmission Fluid Type: API GL-4 SAE 75W/90 or SAE 80W/90 gear oil Transmission Fluid Capacity: Approx. 750 ml (refer to manual for exact capacity) 📐 Dimensions Exterior Length: Approx. 1940 mm Width: Approx. 730 mm Height: Approx. 1060 mm Wheelbase: Approx. 1340 mm Weights Dry Weight: Approx. 120 kg Wet Weight: Approx. 135 kg (fully fueled and ready to ride) Fuel Capacity: Approx. 13 liters 🛡️ Safety Features Ratings Safety Standards: Manufactured to meet European motorcycle safety standards relevant to the period. Active Features Braking System: Front: Single Disc with 4-piston caliper (Brembo/Grimeca), Rear: Single Disc with 2-piston caliper. Suspension Damping: Adjustable front forks (preload, rebound/compression on some models) and rear monoshock (preload adjustable). Passive Features Frame Construction: Aluminum twin-spar perimeter frame for rigidity and stability. 💡 Technology Features Infotainment Features: Basic analog instrumentation (speedometer, tachometer, fuel gauge, coolant temperature gauge). No modern infotainment systems. Driver Assistance Features: N/A (focus on rider control and mechanical feedback). Connectivity Features: N/A. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually (refer to manual for precise intervals based on usage). Spark Plug Replacement: Every 6,000-10,000 km, depending on plug type. Air Filter Cleaning: Every 3,000-6,000 km, more frequently in dusty conditions. Chain Lubrication: Every 500-800 km and after washing/rain. Fluid Specifications Brake Fluid: DOT 4 Coolant Spec: 50/50 mix of distilled water and quality ethylene glycol coolant Two Stroke Oil Type: High-quality synthetic or semi-synthetic 2-stroke oil for racing applications (JASO FD/FB rated). Known Issues Wear And Tear: Piston and cylinder wear due to aggressive two-stroke operation, power valve carbon buildup, clutch wear. Electrical Gremlins: Age-related issues with wiring harnesses, regulator/rectifier failure, stator winding degradation. Carburetor Issues: Dell'Orto carburetor jetting sensitivity, float bowl issues, or vacuum leaks if not maintained. Suspension Leaks: Fork seal leaks and rear...