🏷️ Basic Information Identification Make: Aprilia Model: SR 50 Year: 2002 Product Type: Full Service Repair Manual 👋 Introduction Market Position Segment: High-performance 50cc scooter, popular in urban environments and among younger riders. Competitive Analysis Competitors: Piaggio Zip SP, Gilera Runner 50, Yamaha Aerox 50, MBK Nitro 50. Key Features Performance Orientation: The SR 50 2002 is known for its sporty handling and relatively potent performance for its displacement class, often benefiting from aftermarket tuning. Design: Features aggressive styling and typically a liquid-cooled engine, setting it apart from air-cooled competitors. 📋 Manual Details Coverage Areas General Coverage: Comprehensive repair, maintenance, rebuilding, refurbishing, and restoration for the Aprilia SR 50 (2002 model year). Page Count Estimated Pages: Varies by specific edition, but comprehensive manuals for this era typically range from 200-400 pages. Manual Type Type: Service & Repair Manual Language Language: Likely English, though regional variations may exist. Format Format: Digital (PDF) is most common for sales; printed versions also exist. 📖 Manual Coverage Systems Covered Engine System: Detailed diagnostics, disassembly, assembly, tuning, and troubleshooting of the Aprilia SR 50's engine. Fuel System: Carburetor adjustment, fuel pump operation, fuel tank service, and fuel line maintenance. Ignition System: Spark plug specifications, ignition timing, CDI unit testing, and stator coil diagnostics. Cooling System: Radiator service, coolant specifications, water pump repair, and thermostat testing (if applicable). Transmission System: Automatic transmission (CVT) disassembly, inspection, belt replacement, clutch operation, and variator servicing. Brakes System: Front and rear brake caliper overhaul, brake pad replacement, brake fluid bleeding, and hydraulic system troubleshooting. Electrical System: Wiring diagrams, lighting system service, battery maintenance, starter motor, and charging system diagnostics. Suspension System: Front fork disassembly, oil replacement, seal replacement, and rear shock absorber inspection and replacement. Chassis And Bodywork: Frame inspection, fairing removal and installation, seat service, and handlebar adjustments. Wheel And Tire Service: Tire pressure specifications, wheel bearing inspection, and tire replacement procedures. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, drive belt inspection, and general lubrication. Troubleshooting: Diagnostic charts, common problem identification, and step-by-step repair solutions. Engine Rebuild: Complete engine disassembly, piston, ring, cylinder, and crankshaft servicing, and reassembly procedures. Component Replacement: Step-by-step guides for replacing major and minor components across all vehicle systems. Electrical Diagnostics: Testing of electrical circuits, component continuity checks, and voltage/resistance measurements. Technical Depth Depth: Covers everything from basic owner maintenance to complete engine and transmission rebuilds, suitable for both novice DIYers and experienced mechanics. 📊 Manual Specifications File Format Format: Likely PDF, optimized for digital viewing and printing. Print Quality Quality: High-resolution images, clear diagrams, and readable text. Binding Type Binding: Not applicable for digital format; N/A for printed. Paper Type Paper: Not applicable for digital format; N/A for printed. ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder. Displacement: 49.3 cc Bore X Stroke: 39.0 mm x 41.4 mm Compression Ratio: Approx. 8.2:1 (varies slightly by tuning) Performance Horsepower: Approx. 6.5 HP @ 7,000 RPM (stock) Torque: Approx. 7.0 Nm @ 6,000 RPM (stock) Fuel System Carburetor: Dell'Orto PHVA 17.5 (common for this model) Fuel Type: Unleaded gasoline (minimum 95 RON) Oil Mixture: Premix or separate oil injection system (check specific model variant). Ignition System Ignition Type: Electronic ignition (CDI) 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Optional Options: N/A (CVT is standard) Features Clutch Type: Centrifugal automatic clutch Drive Belt: V-belt drive system 📐 Dimensions Exterior Length: Approx. 1740 mm Width: Approx. 720 mm Height: Approx. 1140 mm Weights Dry Weight: Approx. 105 kg Gross Weight Capacity: Check owner's manual for specific figures, typically around 260-280 kg. 🛡️ Safety Features Ratings Crash Test Results: N/A for scooters in traditional automotive crash testing. Active Features Brakes: Disc brakes front and rear for enhanced stopping power. Passive Features Lighting: Headlight, taillight, brake lights, turn signals. Mirrors: Dual rear-view mirrors. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, odometer, fuel gauge, indicator lights. Driver Assistance Features: N/A (Focus on mechanical and electrical systems relevant to operation). 🔧 Maintenance Service Intervals Engine Oil Change: Every 2,000 - 3,000 km or annually (refer to manual for specific interval and grade). Transmission Oil Change: Every 4,000 - 6,000 km (check manual for specific type and interval). Air Filter Cleaning Or Replacement: Every 2,000 - 4,000 km, depending on operating conditions. Drive Belt Inspection Or Replacement: Inspect every 4,000 km, replace every 8,000 - 10,000 km (or as per wear). Spark Plug Replacement: Every 4,000 - 6,000 km, or as needed based on condition. Fluid Specifications Engine Oil: API TC-W3 rated 2-stroke oil (for oil injection) or specific high-quality mineral/synthetic 2-stroke oil for premix. Transmission Oil: SAE 80W-90 or SAE 75W-90 gear oil (check manual for exact specification). Coolant: Ethylene glycol based coolant, mixed 50/50 with distilled water. Brake Fluid: DOT 4 brake fluid. Known Issues Carburetor Jetting: Can require fine-tuning, especially with...