🏷️ Basic Information Identification Make: Aprilia Model: SR50 Year: 2009 Generation Generation Designation: Third Generation (Piaggio Group Ownership) Codes Model Code: AP500001 👋 Introduction Market Position Segment: Performance-oriented 50cc scooter. Target Audience: Enthusiasts and owners seeking detailed knowledge for maintenance and repair. Competitive Analysis Key Competitors: Yamaha Aerox, Gilera Runner, Piaggio Zip. Key Features Performance Orientation: Known for its sporty handling and lively acceleration, often favored for its performance in the 50cc class. Design Aesthetics: Aggressive styling with features like a sharp front fairing and sporty seat design. Factory Documentation: Authentic Aprilia factory documentation ensures accuracy and completeness. 📋 Manual Details Coverage Areas Coverage: Complete factory service and repair procedures for the Aprilia SR50 2009 model year. Page Count Pages: Hundreds Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, assembly, and troubleshooting of the entire engine (2-stroke liquid-cooled). Fuel System: Carburetor (Dell'Orto PHVA 17.5 BD) tuning, cleaning, and replacement; fuel delivery system diagnostics. Ignition System: CDI ignition system testing and component replacement. Cooling System: Liquid cooling system maintenance, radiator, water pump, and thermostat inspection and repair. Transmission Drivetrain: Automatic CVT (Continuously Variable Transmission) disassembly, inspection, belt replacement, clutch, and torque driver service. Brakes: Front and rear brake system diagnostics, caliper overhaul, brake pad replacement, fluid flush, and bleeding procedures. Suspension: Front fork (telescopic hydraulic) and rear shock absorber inspection, maintenance, and replacement. Electrical System: Wiring diagrams, starter system, battery maintenance, lighting system, horn, indicators, and fuse box diagnostics. Chassis Frame: Frame inspection, steering head bearing maintenance, and body panel removal/installation. Wheels Tires: Wheel bearing service, tire pressure, and tire replacement guidance. Procedures Included Preventative Maintenance: Detailed schedules and procedures for oil changes, spark plug replacement, air filter cleaning/replacement, and brake checks. Troubleshooting: Comprehensive diagnostic flowcharts and symptom-based troubleshooting guides for common mechanical and electrical issues. Component Overhaul: Step-by-step instructions for rebuilding major components like the engine, carburetor, and brake calipers. Adjustments: Carburetor adjustment, throttle cable adjustment, and brake lever free play adjustment. Torque Specifications: Precise torque values for all critical fasteners, ensuring correct assembly and preventing component damage. Technical Depth Depth: Full-spectrum repair and maintenance, from basic fluid checks to complete engine rebuilds and advanced electrical diagnostics. 📊 Manual Specifications File Format Format Details: Digital PDF with searchable text and high-resolution images for clarity. Print Quality Printability: Optimized for printing, allowing users to select and print specific sections or the entire manual. Binding Type Binding Recommendation: Recommended for spiral binding or 3-ring binder for ease of use in a workshop environment. Paper Type Paper Recommendation: Suggests using durable paper for workshop environments, though the digital format allows for flexible printing. ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, liquid-cooled, single-cylinder (Aprilia's own design or Piaggio derived). Displacement: 49.4 cc Bore X Stroke: 39.3 mm x 43.1 mm Compression Ratio: Approximately 7.1:1 Performance Horsepower: Approx. 5.0 - 5.5 HP (at 7,000 rpm, may vary slightly based on tuning and market). Torque: Approx. 5.5 - 6.0 Nm (at 6,500 rpm, may vary). Fuel System Carburetor: Dell'Orto PHVA 17.5 BD with integrated automatic enricher. Fuel Type: Unleaded gasoline (min. 95 RON). Lubrication Oil System: Automatic oil injection system. Cooling System Cooling Method: Liquid-cooled via radiator and fan. 🔧 Transmission Standard Type: Automatic CVT (Continuously Variable Transmission). Clutch: Centrifugal clutch. Features Gear Reduction: Final drive via gears. Fluid Specifications Gearbox Oil: SAE 80W/90 GL-3 or GL-4 gear oil (approx. 100ml). 📐 Dimensions Exterior Length: Approx. 1795 mm Width: Approx. 700 mm Height: Approx. 1175 mm Weights Dry Weight: Approx. 102 kg Gross Vehicle Weight Rating: Approx. 282 kg Payload Capacity: Approx. 180 kg (including rider and passenger). Cargo Underseat Storage: Sufficient for one full-face helmet. 🛡️ Safety Features Ratings Crash Test Results: N/A (Moped classification does not typically undergo stringent crash testing like automobiles). Active Features Braking System: Hydraulic disc brakes front and rear. Tire Design: Sport-oriented tire tread for grip. Passive Features Lighting: Halogen headlamp, taillight, and turn signals. Frame Construction: Steel frame for rigidity and durability. 💡 Technology Features Infotainment Dashboard: Digital speedometer, odometer, fuel gauge, coolant temperature warning light, and indicator lights. Driver Assistance ABS: ABS not typically standard on this model year, but some regional variations may exist (manual would specify if present). Connectivity Connectivity Features: N/A (Basic scooter technology). 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000-5,000 km or annually (check gearbox oil separately). Spark Plug Replacement: Every 4,000-6,000 km (NGK CR9EB or equivalent recommended). Air Filter Cleaning: Every 2,000 km; replacement as needed. Belt Inspection Replacement: Inspect every 5,000 km; replace as needed (typically 8,000-12,000 km). Fluid Specifications Engine Oil Type: Specific 2-stroke premix or separate oil injection reservoir (use high-quality JASO FD certified 2-stroke oil). Coolant Type: Ethylene glycol based coolant with corrosion inhibitors (50% mix with distilled water). Brake...