🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 1994 Codes Model Code: Often referred to by chassis codes specific to the generation, e.g., AF1 Futura derivatives, but specific 1994 codes are complex and model-specific. 👋 Introduction Market Position Positioning: The Aprilia RS 125 was a premium, high-performance lightweight sportbike in its era, known for its track-inspired styling and handling. This manual serves owners and technicians seeking to maintain and repair this specialized machine. Competitive Analysis Competitors: Competed with other 125cc two-stroke sportbikes of the era, such as the Yamaha TZR125, Suzuki RGV125, and Honda NSR125, each offering distinct performance characteristics and engineering. Key Features Vehicle Features: Aggressive sportbike styling, powerful two-stroke engine for its class, advanced chassis and suspension for the time, capable of delivering exciting performance. Key Features Manual Features: Provides the critical technical knowledge required to properly service and repair the Aprilia RS 125, empowering owners to perform their own maintenance or understand the work performed by technicians. 📋 Manual Details Coverage Areas Primary Coverage: Complete service and repair for the Aprilia RS 125 1994 model. Secondary Coverage: Troubleshooting, maintenance, diagnostics, electrical systems, engine rebuilds, chassis components, bodywork. Page Count Estimated Pages: Likely 300-500 pages, typical for comprehensive service manuals of this era. Manual Type Type: Service and Repair Manual Language Language: English (assumed, standard for most downloadable manuals). Format Format: Downloadable Digital Format (PDF) 📖 Manual Coverage Systems Covered Engine: Detailed procedures for disassembly, inspection, assembly, timing, carburation, cooling system (liquid-cooled), exhaust system. Transmission: Clutch operation, gearbox disassembly, inspection, lubrication, shift mechanism. Fuel System: Carburetor (likely Dell'Orto PHBH or similar) tuning, cleaning, and rebuilding; fuel tank, fuel lines, fuel pump (if applicable). Electrical System: Wiring diagrams, ignition system (CDI), lighting, charging system (stator, regulator/rectifier), starter motor, battery maintenance. Brakes: Front and rear brake system components, hydraulic system bleeding, pad replacement, disc inspection. Suspension: Front fork service (oil change, seal replacement), rear shock absorber adjustment and replacement. Chassis And Frame: Frame inspection, steering head bearing maintenance, swingarm maintenance. Bodywork And Fairings: Fairing removal and installation, cosmetic repairs, seat, tank, and tail section. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, brake checks, spark plug replacement, air filter cleaning/replacement. Troubleshooting: Diagnosis of common running issues, electrical faults, starting problems, performance degradation. Engine Rebuild: Piston and cylinder replacement, crankshaft inspection and replacement, gasket and seal replacement. Carburetor Tuning: Jetting recommendations, mixture adjustment, idle speed setting. Electrical Diagnostics: Testing ignition coil, stator output, regulator/rectifier function, starter solenoid. Technical Depth Depth: Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from basic adjustments to complete engine and gearbox overhauls. 📊 Manual Specifications File Format File Format: PDF Searchability: Likely text-searchable if scanned professionally, enabling quick location of information. Print Quality Quality: High-resolution scans of original factory service manual, ensuring clarity of text and diagrams. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Displacement: 125cc (specifically, 124.8 cc) Bore X Stroke: Typically 54 mm x 54.5 mm Compression Ratio: Often around 7.5:1 to 8.5:1 depending on specific tuning and variants. Valve Actuation: N/A (Two-stroke engine) Power Output: Typically in the range of 28-34 hp (21-25 kW) at 11,000-12,000 rpm (depending on market restrictions and specific tuning). Torque Output: Around 16-19 Nm at 10,000-11,000 rpm. Performance Top Speed: Approximately 150-160 km/h (93-99 mph). Fuel System Carburetor Model: Likely Dell'Orto PHBH 28/30 or similar performance-oriented carburetor. Fuel Delivery: Gravity feed from fuel tank, with an oil injection system for two-stroke lubrication. Lubrication Oil System: Pre-mix or Automatic Oil Injection system for crankcase lubrication. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh sequential gearbox Clutch Type: Wet multi-plate clutch, cable actuated. Features Gear Ratios: Specific ratios are detailed in the manual, crucial for understanding performance characteristics. Final Drive: Chain drive, typically 520 pitch. 📐 Dimensions Exterior Length: Approximately 1950 mm Width: Approximately 710 mm Height: Approximately 1050 mm Weights Dry Weight: Around 130-140 kg (depending on specific components and equipment). Fuel Capacity: Approximately 14 liters. Wheelbase: Approximately 1360 mm. 🛡️ Safety Features Ratings Crash Safety: N/A (Motorcycle, no standardized crash ratings like cars). Active Features Braking System: Front: Single disc brake with dual-piston caliper. Rear: Single disc brake with single-piston caliper. (ABS not typically available in 1994). Lighting: Halogen headlamp, LED tail light (common for the era), turn signals. Passive Features Frame Construction: Tig-welded aluminum alloy twin-spar frame, providing rigidity and lightweight. Tires: Sport-oriented radial tires, e.g., 110/70-17 front and 150/60-17 rear. 💡 Technology Features Infotainment Infotainment System: N/A (Basic instrumentation: speedometer, tachometer, coolant temperature gauge, neutral indicator). Driver Assistance Assistance Systems: N/A (No electronic rider aids typically found on this model). 🔧 Maintenance Service Intervals Oil Change Engine: Every 3,000-5,000 km or annually, depending on usage. Spark Plug Replacement: Every 5,000-8,000 km, depending...