🏷️ Basic Information Identification Make: Aprilia Model: SR 50 Year: 2003, 2004 Codes Chassis Code: Not specified in product information Engine Code: Not specified in product information 📋 Manual Details Coverage Areas General Service: Covered Engine Overhaul: Covered Fuel System: Covered Cooling System: Covered Ignition System: Covered Transmission Drivetrain: Covered Suspension: Covered Brakes: Covered Electrical System: Covered Body Chassis: Covered Troubleshooting: Covered Wiring Diagrams: Covered Page Count Pages: Not specified in product information Manual Type Type: Workshop Service Repair Manual Format: Downloadable Language Language: Not specified in product information ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 49 cc (approximate, based on typical SR 50 models) Cooling Method: Liquid-cooled Bore X Stroke: Not specified in product information Performance Horsepower: Not specified in product information Torque: Not specified in product information Fuel System Fuel Delivery: Carburetor (likely Dell'Orto, common for this model) Fuel Type: Unleaded gasoline Oil Mixing: Automatic oil injection system 🔧 Transmission Standard Transmission Type: Automatic CVT (Continuously Variable Transmission) Features Clutch: Automatic centrifugal clutch Drive Type: Belt drive 📐 Dimensions Exterior Length: Not specified in product information Width: Not specified in product information Height: Not specified in product information Weights Dry Weight: Not specified in product information Curb Weight: Not specified in product information 🛡️ Safety Features Ratings Safety Certification: Not specified in product information Features Braking System: Front disc brake, Rear disc brake (typical for this model) Lighting System: Headlight, tail light, turn signals Tires: Tubeless, front and rear 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific intervals Spark Plug Replacement: Refer to manual for specific intervals Air Filter Cleaning Replacement: Refer to manual for specific intervals Drive Belt Inspection Replacement: Refer to manual for specific intervals Fluid Specifications Engine Oil Type: Refer to manual for specific grade (e.g., SAE 10W-40) Coolant Type: Ethylene glycol based coolant, refer to manual for mixture ratio Brake Fluid Type: DOT 4 (typical for scooters) Two Stroke Oil Type: API TC certified two-stroke oil