🏷️ Basic Information Identification Make: Aprilia Model: SR50 Factory Year: 2004 Codes Model Code: VBF00 👋 Introduction Market Position Segment: High-performance 50cc sport scooter Target Audience: Enthusiasts and owners seeking in-depth maintenance and repair knowledge for their Aprilia SR50 Factory. Competitive Analysis Competitors 2004: Piaggio Zip SP, Gilera Runner 50, Yamaha Aerox, Malaguti F12 Phantom Key Features Vehicle Appeal: Sporty styling, capable handling, good performance for its class, premium brand reputation. Manual Value: Official factory documentation ensures accuracy and completeness for DIY maintenance and repair, vital for preserving performance and value. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: Downloadable PDF Page Count Estimated Pages: Hundreds (Specific count not provided but implied extensive coverage) 📖 Manual Coverage Systems Covered Powertrain: Engine, cooling system, fuel system, exhaust system, transmission (CVT) Chassis: Frame, suspension (front fork, rear shock absorber), steering, wheels, tires Braking System: Front and rear brake systems (hydraulic disc brakes), brake fluid specifications, bleeding procedures Electrical System: Battery, charging system (alternator, regulator/rectifier), ignition system, lighting system (headlight, taillight, turn signals), starting system, wiring diagrams, ECU diagnostics Bodywork And Trim: Body panels, seat, storage compartment, fairings, maintenance access points Procedures Included Routine Maintenance: Oil changes, filter replacements (air, oil, fuel), spark plug service, coolant checks and changes, brake pad inspection/replacement, tire pressure checks Troubleshooting: Diagnostic procedures for common and uncommon issues, fault codes, electrical system diagnostics, engine performance problems Major Repairs: Engine overhaul, transmission rebuild, suspension component replacement, brake system repair, electrical component testing and replacement Disassembly Reassembly: Detailed step-by-step instructions for dismantling and reassembling all major vehicle components Technical Depth Depth: Comprehensive, covering all aspects from basic maintenance to complete engine and transmission rebuilds. Includes detailed specifications, torque values, and diagnostic procedures. 📊 Manual Specifications File Format Format: PDF Searchable Text: Likely searchable, facilitating quick access to information. Print Quality Quality: High-resolution, suitable for printing all or specific pages. Binding Type Binding: Not applicable (digital download, user prints and binds) Paper Type Paper Type: Not applicable (digital download, user's choice) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder Engine Displacement: 49.4 cc Bore X Stroke: 39.0 mm x 41.4 mm Compression Ratio: Approximately 7.5:1 (subject to specific tuning variations) Performance Horsepower: Approximately 6.5 - 7.5 HP (Varies with specific tuning and market regulations) Torque: Not readily specified, but typically around 5-6 Nm for this class. Fuel System Carburetor: Dell'Orto PHBN 17.5 (often with automatic choke) Fuel Type: Unleaded gasoline (RON 95 recommended) Oil Mixture: Automatic oil injection system (requires 2-stroke specific oil) Cooling System Cooling Method: Liquid-cooled with radiator and fan Coolant Type: Ethylene glycol-based coolant with anti-corrosion additives (50% mixture with distilled water recommended) 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Drive: V-belt drive Features Transmission Fluid: Gearbox oil (e.g., SAE 80W/90, specific Aprilia part number recommended in manual) 📐 Dimensions Exterior Length: Approx. 1870 mm Width: Approx. 725 mm Height: Approx. 1170 mm Wheelbase: Approx. 1305 mm Weights Dry Weight: Approx. 106 kg Fuel Tank Capacity: 7.0 Liters Oil Tank Capacity: 1.2 Liters 🛡️ Safety Features Ratings Crash Safety: Not applicable for this vehicle type; focus on mechanical integrity and rider safety features. Active Features Braking: Hydraulic disc brakes front and rear for strong stopping power. Lighting: Headlight, taillight, brake light, and turn signals for visibility. Passive Features Frame Construction: Robust steel frame providing structural integrity. Ergonomics: Designed for rider comfort and control. 💡 Technology Features Infotainment Dashboard: Analog speedometer, tachometer, fuel gauge, coolant temperature gauge, indicator lights. Driver Assistance ABS: Not standard on the 2004 SR50 Factory model. Connectivity Connectivity Features: No electronic connectivity features such as Bluetooth or smartphone integration. 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000-5,000 km or annually. (Refer to manual for exact intervals and specific oil type) Gearbox Oil Change: Every 6,000-10,000 km or bi-annually. (Refer to manual for exact intervals and specific oil type) Air Filter Cleaning Replacement: Clean every 5,000 km, replace as needed or every 10,000 km. (Refer to manual for specific guidance) Spark Plug Replacement: Every 5,000-10,000 km, depending on type and condition. (Specific plug type and gap in manual) Fluid Specifications Engine Oil Type: API TC certified 2-stroke synthetic or semi-synthetic oil (specific Aprilia recommendations in manual) Coolant Specifications: 50% Ethylene Glycol based coolant with distilled water Brake Fluid Type: DOT 4 brake fluid (refer to manual for specific type and replacement intervals) Known Issues Common Wear Items: Drive belt, clutch springs, variator rollers, brake pads, wheel bearings, ignition coil. Potential Electrical Issues: Corrosion in connectors, stator or regulator/rectifier failure (common in many scooters of this era). Carburetor Tuning: May require periodic adjustment or cleaning due to its 2-stroke nature and potential for deposits. 📚 Vehicle History Brand Heritage Manufacturer Origin: Italy Aprilia Focus: Aprilia has a long and successful history in motorcycle racing and performance-oriented...