🏷️ Basic Information Identification Make: Aprilia Model: SR50 Year: 2005 Product Type: Service Repair Workshop Manual 📋 Manual Details Coverage Areas General Service: Included Engine Overhaul: Included Transmission System: Included Electrical System: Included Frame And Suspension: Included Brakes: Included Cooling System: Included Fuel System: Included Exhaust System: Included Troubleshooting: Included Diagnostic Procedures: Included Page Count Estimated Pages: Approximately 200-300 pages Manual Type Type: Workshop Manual Usage: Mechanics and Technicians Language Language: English Format Format: Digital (Likely PDF, though not explicitly stated) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 49cc Bore X Stroke: 40mm x 39.2mm (Typical for this era and class) Cooling System: Liquid-cooled Performance Horsepower: Approximately 4.5 - 5.5 HP Torque: Not explicitly stated in product info, but relevant for manual coverage Fuel System Fuel Delivery: Carburetor (Likely Dell'Orto PHVA series) Fuel Type: Unleaded Gasoline (Premium recommended) Oil Mixture: Automatic Oil Injection System 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Clutch Type: Centrifugal Automatic Clutch Features Drive Type: Belt Drive to Rear Wheel 📐 Dimensions Exterior Length: Approx. 1850 mm (Varies by specific sub-model) Width: Approx. 710 mm (Varies by specific sub-model) Height: Approx. 1140 mm (Varies by specific sub-model) Weights Dry Weight: Approx. 106 kg Gross Vehicle Weight Rating: Not specified in product info, but covered in manual 🛡️ Safety Features Features Braking System: Front Disc Brake, Rear Disc Brake Lighting: Headlight, Taillight, Turn Signals, Brake Light Suspension: Telescopic Front Fork, Rear Monoshock Absorber Tires: Tubeless (Specific sizes vary by sub-model, typically 13-inch wheels) Ignition System: Electronic Ignition 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific recommendations (e.g., every 2000-3000 km) Spark Plug Replacement: Refer to manual for specific recommendations Air Filter Cleaning Replacement: Refer to manual for specific recommendations Fluid Specifications Coolant Type: Ethylene Glycol based Antifreeze (50/50 mix with distilled water) Brake Fluid Type: DOT 4 Gearbox Oil Type: SAE 80W-90 (Gear Oil) Engine Oil Type: 2-stroke specific engine oil (high quality synthetic recommended)