🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 1993 👋 Introduction Market Position Motorcycle Segment: Lightweight sportbike, entry-level performance motorcycle Target Audience: New riders, track day enthusiasts, DIY mechanics seeking detailed repair guidance Competitive Analysis Competitors 1993: Yamaha TZR 125, Honda NSR 125, Cagiva Mito 125 Key Features Rs125 Appeal: Sharp styling, potent two-stroke engine, lightweight chassis, track-oriented handling 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: Downloadable PDF Page Count Page Count: Estimated 300-400 pages (typical for comprehensive service manuals) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, top-end rebuild, bottom-end assembly, cooling system, lubrication system, fuel system (carburetor, fuel lines), ignition system, exhaust system. Transmission: Gearbox inspection, clutch service, gear selection mechanism, gearbox oil change. Chassis: Frame inspection and repair, front suspension (forks, steering head bearings), rear suspension (shock absorber, swingarm, linkages), wheel bearings, spoke tensioning. Brakes: Front and rear brake system service, caliper overhaul, master cylinder service, brake fluid replacement, pad and disc inspection. Electrical: Wiring diagrams, battery maintenance, charging system (alternator/stator, regulator/rectifier), lighting system, ignition switch, starter motor, instrumentation. Bodywork: Fairing removal and installation, seat, fuel tank, handlebars, controls, body panel fasteners. Procedures Included Maintenance: Scheduled maintenance tasks, oil and filter changes, spark plug replacement, air filter cleaning/replacement, chain adjustment and lubrication, brake system bleeding, coolant flush. Troubleshooting: Diagnostic procedures for common starting, running, and performance issues; electrical fault finding using wiring diagrams. Repair: Detailed step-by-step repair instructions for all major mechanical and electrical components. Technical Depth: Comprehensive coverage from basic routine maintenance to complete engine rebuilds and advanced diagnostics. 📊 Manual Specifications File Format File Format: PDF Searchability: Searchable text content Print Quality: High-resolution images and diagrams, printable pages ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, two-stroke, single-cylinder Displacement: 124.8 cc (7.62 cu in) Bore X Stroke: 54.0 mm x 54.5 mm (2.13 in x 2.15 in) Compression Ratio: 8.8:1 (typical) Power Delivery: Rotary disc valve intake Performance Horsepower: Approximately 30-34 hp (1993 European spec) Torque: Approximately 23-25 Nm Fuel System Carburetor: Dell'Orto VHSA 34 (or similar 34mm) - specific jetting details in manual Fuel Type: Unleaded gasoline, 95-98 RON Fuel Mixture: Automatic oil injection system Oil Type: 2-stroke engine oil (API TC, JASO FD rated) Cooling System Cooling Type: Liquid-cooled Coolant Type: Ethylene glycol based coolant mixture (50/50 with distilled water) 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet, multi-plate Features Gear Ratios: Specific ratios available within the manual for each gear. Final Drive: Chain drive Transmission Oil Type: SAE 75W/90 or SAE 80 gear oil (API GL-4) Transmission Oil Capacity: Approximately 0.8 Liters 📐 Dimensions Exterior Length: Approximately 1950 mm (76.8 in) Width: Approximately 700 mm (27.6 in) Height: Approximately 1060 mm (41.7 in) Wheelbase: Approximately 1345 mm (53.0 in) Weights Dry Weight: Approximately 131 kg (289 lbs) Fuel Tank Capacity: Approximately 10.0 Liters (2.6 US gal) Seat Height: Approximately 800 mm (31.5 in) 🛡️ Safety Features Ratings NHTSA Rating: N/A (Motorcycle classification) Active Features Braking System: Front: Single disc brake (e.g., Brembo 320mm), Rear: Single disc brake (e.g., Brembo 240mm) Tires Front: 110/70-17 Tires Rear: 130/70-17 or 140/70-17 Suspension Front: Upside-down telescopic forks (e.g., Marzocchi or Paioli), adjustable preload in some variants. Suspension Rear: Monoshock with progressive linkage system, adjustable preload and rebound damping. Passive Features Lighting: Halogen headlight, LED or incandescent taillight and turn signals. 💡 Technology Features Infotainment Instrumentation: Analog speedometer, tachometer, coolant temperature gauge, odometer, trip meter, warning lights (oil, neutral, high beam, indicators). Driver Assistance ABS: Not typically equipped on the 1993 model. Connectivity Charging System: 12V AC charging system via stator and electronic regulator/rectifier. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually, depending on usage. Spark Plug Replacement: Every 5,000-10,000 km or as per manual recommendations. Air Filter Cleaning: Every 3,000-6,000 km, depending on riding conditions. Chain Maintenance: Lubricate and adjust every 500-1000 km, or after washing/wet riding. Brake Fluid Flush: Every 2 years or as specified in the manual. Coolant Replacement: Every 2-3 years. Fluid Specifications Engine Oil Type: Fully synthetic 2-stroke motorcycle oil (API TC, JASO FD or higher) Transmission Oil Spec: SAE 75W/90 or SAE 80 GL-4 Brake Fluid Spec: DOT 4 Coolant Spec: 50/50 mix of Ethylene Glycol and Distilled Water Known Issues Common Problems: Carburetor jetting sensitivity to altitude/temperature, power valve (A.E.S.) mechanism maintenance, occasional electrical connector issues, aging rubber components (hoses, seals). Typical Repairs: Piston ring replacement, clutch plate wear, fork seal replacement, carburetor cleaning and re-jetting. 📚 Vehicle History Brand Heritage Aprilia Legacy: Italian manufacturer with a strong racing pedigree, particularly in smaller displacement categories and two-stroke engines. Model Evolution Rs125 Lineage: The RS 125 evolved from earlier models like the AF1 series, inheriting its sporting DNA and advanced chassis technology for its era. Production Production Years: The RS 125 was produced for...