🏷️ Basic Information Identification Make: Aprilia Model: SR50 Factory Model Year: 2005 Product Type: Factory Service Repair Manual Product Format: Download PDF 👋 Introduction Market Position Segment: High-performance 50cc scooter segment, known for its sporty design and advanced features. Competitive Analysis Competitors: Competes with other premium 50cc scooters from brands like Yamaha (Aerox), Piaggio (Zip SP), and Peugeot (Speedfight). Key Features Vehicle Performance Focus: Emphasis on sporty handling and acceleration, often featuring upgraded components for its class. Key Features Manual Value Proposition: Provides factory-level repair and maintenance information, empowering owners and technicians to perform accurate and efficient servicing. 📋 Manual Details Coverage Areas Covered Systems: Engine, Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (CVT), Chassis, Suspension, Brakes, Electrical System, Lighting, Bodywork, Troubleshooting, Maintenance Schedules, Specifications Page Count Estimated Pages: Hundreds of pages Manual Type Type: Complete Official Factory Service Repair Manual Language Language: English Format Format Details: Searchable PDF, printable 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, cylinder head, piston, crankshaft, connecting rod, valve timing, lubrication, cooling system operation and repair. Fuel System: Carburetor specifications, adjustments, cleaning, fuel pump, fuel lines, fuel tank service. Ignition System: Ignition coil, spark plug specifications, timing, CDI unit, troubleshooting. Transmission Drivetrain: Continuously Variable Transmission (CVT) operation, variator, clutch, belt replacement, gear oil specifications and change intervals. Chassis Suspension: Front fork service, rear shock absorber replacement, steering system overhaul, frame inspection. Brakes: Front and rear brake caliper service, hydraulic lines, brake fluid specifications and bleeding procedures, master cylinder overhaul, brake pad replacement. Electrical Lighting: Wiring diagrams, battery specifications, charging system, starter motor, lighting circuits, fuses, indicators, horn. Procedures Included Maintenance: Regular scheduled maintenance, fluid level checks, filter replacements, lubrication points, brake adjustments. Troubleshooting: Diagnostic procedures for common issues, symptom-based problem solving, electrical and mechanical troubleshooting trees. Repair: Step-by-step instructions for component removal, repair, and reinstallation across all major vehicle systems. Diagnostics: Detailed diagnostic charts for identifying and resolving performance issues, electrical faults, and mechanical problems. Technical Depth Depth: Comprehensive, from basic adjustments to complete engine and transmission rebuilds. Includes detailed diagrams and specifications for factory-level repairs. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: High resolution, suitable for printing individual sections or the entire manual. Binding Type Binding: Not applicable (downloadable PDF) Paper Type Paper: Not applicable (digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder Displacement: 49cc (approx.) Bore X Stroke: Refer to manual for exact specifications (e.g., 40mm x 39.2mm for some variants) Power Output: Refer to manual for exact specifications (typically around 5-7 hp depending on variant and restrictions) Torque: Refer to manual for exact specifications Fuel System Fuel Delivery: Carburetor (e.g., Dell'Orto PHVA 17.5) Fuel Type: Unleaded gasoline (minimum 95 RON recommended) Oil Mixing: Automatic oil injection system (separate oil reservoir) Cooling System Cooling Method: Liquid-cooled Coolant Type: Ethylene glycol-based coolant (50% mixture with distilled water) Ignition System Ignition Type: Electronic ignition (CDI) Spark Plug Type: Refer to manual for specific NGK or equivalent part number (e.g., NGK BR9ES) 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Drive System: Belt drive to rear wheel Features Clutch Type: Automatic centrifugal clutch Gear Ratios: Variable (CVT), gear reduction ratios provided in manual Transmission Fluid: Not applicable for CVT, but drive unit requires specific gear oil (refer to manual for type and capacity) 📐 Dimensions Exterior Length: Refer to manual for exact dimensions Width: Refer to manual for exact dimensions Height: Refer to manual for exact dimensions Weights Dry Weight: Refer to manual for exact weight (typically around 90-100 kg) Fuel Tank Capacity: Refer to manual for exact capacity (typically around 7-8 liters) Wheels Tires Front Tire Size: Refer to manual for exact size (e.g., 130/60-13) Rear Tire Size: Refer to manual for exact size (e.g., 140/60-13) Wheel Bolt Pattern: Not applicable (scooter specific hub mounting) 🛡️ Safety Features Ratings Safety Standards: Complies with relevant European safety standards for mopeds and scooters. Active Features Braking System: Hydraulic disc brakes front and rear. Lighting: Halogen headlight, LED taillight, turn signals. Passive Features Chassis Construction: Steel frame providing a stable and robust platform. Bodywork: Aerodynamic fairing for rider protection and stability. 💡 Technology Features Infotainment Instrument Cluster: Digital/analog instrument cluster with speedometer, tachometer, fuel gauge, coolant temperature warning, and indicator lights. Driver Assistance Braking Assist: ABS was not standard on most 2005 SR50 models; manual covers conventional braking system. Connectivity Connectivity Features: No advanced connectivity features typical of modern vehicles; focus is on mechanical and electrical systems. 🔧 Maintenance Service Intervals Oil Change Engine: Refer to manual for specific interval based on mileage or time (typically every 3,000-5,000 km) Spark Plug Replacement: Refer to manual for interval (e.g., every 5,000-7,000 km) Air Filter Cleaning Replacement: Refer to manual for interval (e.g., every 3,000-5,000 km or as needed based on conditions) Brake Fluid Change:...