🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 1994 Codes Internal Product Code: APR-RS125-1994-RM 👋 Introduction Market Position Segment: Entry-level sport motorcycle, popular in the 125cc class for its performance and styling. Competitive Analysis Competitors 1994: Yamaha TZR125, Honda NSR125, Suzuki RG125. Key Features Design Philosophy: Lightweight, aggressive styling inspired by Aprilia's racing heritage, performance-oriented two-stroke engine. Target Audience: Young riders, those seeking a sporty 125cc experience, aspiring racers. 📋 Manual Details Coverage Areas Covered Model Variants: Aprilia RS 125 (all 1994 configurations) Page Count Estimated Page Count: 300-400 pages (estimated for comprehensive coverage) Manual Type Type: Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Two-stroke single cylinder, Rotax 122 engine overhaul, top-end rebuild, bottom-end assembly, cooling system, lubrication, exhaust system. Fuel System: Carburetor service (Dell'Orto PHBH series), fuel delivery, fuel tank and lines, fuel pump operation. Ignition System: CDI ignition system, stator, ignition coil, spark plug specifications, timing. Transmission: Six-speed gearbox, clutch assembly, gear shifting mechanism, transmission fluid specifications and change procedures. Chassis And Frame: Frame inspection, suspension component service (front forks, rear shock absorber), steering head bearings. Brakes: Front and rear brake system service, hydraulic lines, brake fluid specifications, caliper overhaul, pad replacement, rotor specifications. Electrical System: Wiring diagrams, battery service, charging system, lighting system, starter motor, fuses, relays, instrument cluster. Bodywork And Trim: Fairing removal and installation, seat, fuel tank, body panel components. Procedures Included Maintenance: Routine maintenance checks, oil change intervals, filter replacements, spark plug checks, chain adjustment, brake bleeding. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues; step-by-step troubleshooting guides. Repair: Detailed step-by-step repair instructions for all major components, including engine rebuild, transmission overhaul, suspension service, and electrical component repair. Assembly Disassembly: Comprehensive procedures for dismantling and reassembling all major vehicle systems. Technical Depth Depth: In-depth diagnostic data, component specifications, torque values, clearance measurements, and detailed rebuild procedures suitable for professional technicians and experienced DIY mechanics. 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchability: Text-searchable PDF for quick information retrieval. Print Quality Resolution: High-resolution images and diagrams for clarity. Binding Type Binding: Digital Download (No physical binding) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Engine Code: Rotax 122 (typically) Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: Approx. 7.8:1 (varies slightly by market/tune) Power Output: Approx. 27-30 hp @ 9,000 rpm (market dependent, often restricted for A1 license) Torque: Approx. 21 Nm @ 8,000 rpm Performance Top Speed: Approx. 140-150 km/h (depending on rider, conditions, and restrictions) Fuel System Carburetor: Dell'Orto PHBH 28 (or similar, e.g., PHBH 30 on some variants) Fuel Type: Unleaded gasoline, minimum 95 RON Fuel Mixture: Pre-mix or automatic oil injection (depending on specific model configuration) Fuel Capacity: Approx. 12-14 liters 🔧 Transmission Standard Gearbox Type: Constant mesh, 6-speed Clutch Type: Wet multi-plate Features Gear Ratios: Specific ratios available in manual; designed for sporty performance. Final Drive: Chain drive Transmission Fluid: Specific gearbox oil (e.g., SAE 75W-90 or equivalent, as per manual recommendation) 📐 Dimensions Exterior Length: Approx. 1980 mm Width: Approx. 700 mm (at handlebars) Height: Approx. 1070 mm (at seat) Wheelbase: Approx. 1360 mm Weights Dry Weight: Approx. 130-135 kg Wet Weight: Approx. 145-150 kg (with fluids) 🛡️ Safety Features Ratings Safety Standards: Designed to meet European safety standards of the era; specific crash test ratings not typically published for this class of motorcycle. Active Features Braking System: Hydraulically operated disc brakes front and rear. Suspension: Telescopic front forks (often with adjustable preload), Monoshock rear suspension (Pro-Arm single-sided swingarm on some later variants). Passive Features Lighting: Full lighting system: headlight, taillight, brake lights, turn signals. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, tachometer, odometer, engine temperature warning light, neutral indicator. Driver Assistance Features: N/A (None typical for this model/era) Connectivity Features: N/A (None typical for this model/era) 🔧 Maintenance Service Intervals Oil Change Transmission: Every 5,000 - 7,500 km or annually, refer to manual for exact interval and fluid type. Spark Plug Check: Every 3,000 km; replacement interval varies based on plug type. Air Filter Cleaning: Every 5,000 km or as needed based on conditions. Chain Lubrication Adjustment: Every 500-1,000 km, or after riding in wet conditions. Fluid Specifications Brake Fluid: DOT 4 Coolant: Ethylene glycol based coolant with anti-corrosion additives (50% mixture with distilled water). 2 Stroke Oil: High-quality JASO FD or API TC certified 2-stroke oil. Known Issues Power Valve Sticking: Common on older two-strokes; requires regular cleaning to ensure proper engine operation. Carburetor Tuning: Sensitivity to altitude and temperature changes; requires periodic adjustment. Clutch Wear: Can wear prematurely with aggressive riding; replacement procedures detailed in manual. Electrical Connections: Corrosion or loose connections can lead to intermittent electrical faults; requires inspection. 📚 Vehicle History Brand Heritage...