🏷️ Basic Information Identification Make: Aprilia Model: RS4 50 Year: 2011 Type: Sportbike / Motorcycle 📋 Manual Details Coverage Areas Diagnostic: Yes Repair: Yes Maintenance: Yes Electrical System: Yes Engine: Yes Power Supply: Yes Suspensions: Yes Chassis: Yes Braking System: Yes Cooling System: Yes Bodywork: Yes Pre Delivery: Yes Troubleshooting: Yes Special Tools: Yes Page Count Pages: 224 Manual Type Type: Workshop Service Repair Manual Source: Original Factory Language Language: English File Format Format: PDF Compatibility Operating Systems: All Versions of Windows & Mac Requirements Software: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, 2-stroke Displacement: 49.9 cc Bore X Stroke: 39.5 mm x 40.0 mm Cooling System: Liquid-cooled Fuel Induction: Carburetor (Specific model may vary, e.g., Dell'Orto PHVA 17.5) Ignition System: Electronic ignition Starter System: Electric and Kick starter Performance Power Output: Approximately 11-11.5 HP (May vary based on market regulations) Fuel System Fuel Type: Unleaded Gasoline Fuel Tank Capacity: Approximately 13 liters 🔧 Transmission Standard Transmission Type: 6-speed manual Clutch Type: Wet, multi-plate clutch Features Final Drive: Chain drive 📐 Dimensions Exterior Length: Approximately 1955 mm Width: Approximately 720 mm Height: Approximately 1130 mm Weights Dry Weight: Approximately 123 kg Wet Weight: Approximately 138 kg (Estimated) Wheelbase Wheelbase: Approximately 1350 mm Wheels Front Wheel Size: 17 inch Rear Wheel Size: 17 inch Tires Front Tire Size: 110/70-17 Rear Tire Size: 130/70-17 🛡️ Safety Features Features Braking System Front: Disc brake (Specific diameter and caliper type may vary) Braking System Rear: Disc brake (Specific diameter and caliper type may vary) Lighting System: Headlights, Taillights, Turn Signals, Brake Lights Suspension Front: Telescopic front fork Suspension Rear: Monoshock rear suspension 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual (Typically every 3000-5000 km or annually) Spark Plug Replacement: Refer to manual Air Filter Cleaning Or Replacement: Refer to manual Fluid Specifications Engine Oil Type: Refer to manual (Typically 2-stroke oil, specific grade and mixture ratio) Coolant Type: Refer to manual (Ethylene glycol-based coolant, specific mixture ratio) Brake Fluid Type: Refer to manual (DOT 4 recommended)