🏷️ Basic Information Identification Make: Aprilia Model: SR50 Factory Year: 2004 Generation Generation Code: Piaggio Hi-Per2 Pro Codes Vin Decoder Start Year: 2004 Vin Decoder End Year: 2004 👋 Introduction Market Position Scooter Segment: High-performance sport scooter Target Demographic: Enthusiasts seeking sporty urban mobility Competitive Analysis Key Competitors: Yamaha Aerox, Malaguti F12 Phantom, Gilera Runner Key Features Performance Focus: Emphasis on sporty handling and acceleration Design: Aggressive, aerodynamic styling reminiscent of larger motorcycles 📋 Manual Details Coverage Areas General Coverage: Complete official factory service repair manual Page Count Estimated Page Count: Hundreds of pages (printable in entirety or selected sections) Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Detailed engine overhaul, diagnosis, and tuning Fuel System: Carburetor adjustment, fuel pump, fuel lines Cooling System: Radiator, coolant, water pump, thermostat Exhaust System: Muffler, catalytic converter, exhaust manifold Transmission: Automatic CVT (Continuously Variable Transmission) service and adjustment Drive Train: Belt, clutch, reduction gears Suspension: Front fork overhaul, rear shock absorber replacement Brakes: Hydraulic disc brakes (front and rear), brake fluid replacement, caliper service Electrical System: Wiring diagrams, battery, charging system (stator, regulator), ignition system, lighting, starter motor Frame And Bodywork: Chassis components, fairings, seat, handlebars, body panel removal and installation Wheels And Tires: Tire pressure, wheel bearing service, tire replacement Controls: Throttle, brake levers, switches Procedures Included Maintenance: Routine inspections, oil changes, filter replacements, lubrication Troubleshooting: Diagnostic charts for common problems and their solutions Repair: Step-by-step repair instructions for all major components Disassembly Assembly: Complete procedures for component removal and reinstallation Tune Up: Engine tuning, carburetor synchronization, spark plug service Electrical Diagnostics: Testing of circuits, components, and troubleshooting electrical faults Torque Specifications: Essential torque values for critical fasteners Technical Depth Depth: Comprehensive factory-level diagnostics and repair procedures Target Audience: Professional technicians and advanced DIY mechanics 📊 Manual Specifications File Format PDF Version: Likely PDF 1.4 or higher, supporting text search and high-resolution printing Print Quality Image Resolution: High-resolution for clear diagrams and illustrations Binding Type Binding: N/A (Digital Download PDF) Paper Type Paper: N/A (Digital Download PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, liquid-cooled, single-cylinder Engine Family: Piaggio Hi-Per2 Pro Displacement: 49.3 cc (3.01 cu in) Bore X Stroke: 39.5 mm x 40.3 mm Compression Ratio: Approximately 9.5:1 (subject to variation) Cooling Method: Liquid Cooling Performance Horsepower: Approx. 6.5 HP @ 7000 RPM (stock) Torque: Approx. 7.0 Nm @ 6500 RPM (stock) Fuel System Fuel Delivery: Dell'Orto PHVA 17.5 carburetor Fuel Type: Unleaded gasoline (min. 95 octane recommended) Oil Mixing: Automatic oil injection system Oil Type: 2-stroke synthetic oil meeting API TC, JASO FD specifications 🔧 Transmission Standard Type: Automatic CVT (Continuously Variable Transmission) Features: Automatic clutch, reduction gears Transmission Fluid Type: Specific scooter gear oil (refer to manual for exact specification, typically SAE 80W/90 GL-4) 📐 Dimensions Exterior Length: Approx. 1870 mm Width: Approx. 720 mm Height: Approx. 1210 mm Wheelbase: Approx. 1330 mm Weights Dry Weight: Approx. 115 kg Gross Vehicle Weight Rating: Refer to chassis VIN plate Fuel Tank Capacity: Approx. 7.0 Liters (1.85 Gallons) Oil Tank Capacity: Approx. 1.2 Liters (0.32 Gallons) 🛡️ Safety Features Ratings Safety Standards: Meets relevant EU and local safety regulations for mopeds/scooters Active Features Braking System: Front and rear hydraulic disc brakes Lighting: Halogen headlight, LED taillight, turn signals Passive Features Frame Construction: High-strength steel frame Passenger Grab Handles: Integrated rear grab rails 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer and tachometer, digital odometer and clock, warning lights. Driver Assistance ABS: Not typically equipped on standard 2004 SR50 Factory models (some regional variations might exist). Connectivity Connectivity Features: None (basic mechanical and electrical systems). 🔧 Maintenance Service Intervals Oil Change: Every 3,000 km or 12 months (engine oil for 4-stroke, though this is 2-stroke) Transmission Oil Change: Every 6,000 km or 24 months Spark Plug Inspection: Every 3,000 km or 12 months Air Filter Cleaning: Every 3,000 km or 12 months Drive Belt Inspection: Every 6,000 km or 24 months Brake Fluid Change: Every 24 months or as specified by condition Fluid Specifications Coolant Type: Ethylene glycol based coolant (50% mixture with distilled water) Brake Fluid Type: DOT 4 Engine Oil Capacity: N/A (2-stroke oil injection system) Known Issues Common Problem 1: Carburetor jetting issues or clogging leading to poor idling or acceleration. Common Problem 2: Weak starting or charging due to stator or regulator failure. Common Problem 3: CVT belt wear or slipping, impacting performance and drivability. Common Problem 4: Cooling system leaks or inefficient cooling, leading to overheating. Common Problem 5: Electrical connector corrosion causing intermittent component failures. 📚 Vehicle History Brand Heritage Brand Origins: Aprilia is an Italian manufacturer renowned for its sport motorcycles and scooters. Brand Focus: Performance scooters and sport motorcycles Model Evolution Sr50 Lineage: The SR50 line has a long history, with...