🏷️ Basic Information Identification Make: Aprilia Model: RS125 Tuono Year: 2003 Codes Internal Product Code: APR-RS125T-2003-UPDATES 👋 Introduction Market Position Vehicle Segment: Lightweight Sportbike / Naked Sportbike (Tuono variant) Target Audience: Riders seeking a nimble, performance-oriented 125cc motorcycle, particularly owners of the 2003 RS125 Tuono who require specific update information. Competitive Analysis Key Competitors Segment: Other 125cc sportbikes and naked bikes from manufacturers like Yamaha (TZR/DT), Honda (CBR/CB), Suzuki (GSXR/GSF), and Kawasaki (Ninja/Z). Key Features Model Characteristics: Known for its potent two-stroke engine for its displacement, aggressive styling, and agile handling, distinguishing it within the 125cc class. Manual Value Proposition: Provides essential, model-year-specific technical updates for owners and technicians, ensuring accurate maintenance and troubleshooting of the 2003 RS125 Tuono. 📋 Manual Details Coverage Areas Manual Type: Update Supplement / Technical Bulletin Language: English Format: PDF Page Count Pages: 10 Searchability Bookmarks: Yes Text Search: Yes 📖 Manual Coverage Systems Covered Engine Updates: Details specific modifications or adjustments for the 2003 model year, potentially including carburetion, ignition mapping, or exhaust system changes relevant to the RS125 Tuono. Chassis Updates: Information pertaining to any revisions in suspension settings, frame geometry adjustments, or braking system enhancements introduced for this model year. Electrical System Updates: Updates or clarifications regarding wiring harnesses, ECU parameters, or sensor recalibrations specific to the 2003 Tuono model. Bodywork And Ergonomics: Potential updates on fairing modifications, seat design, handlebar positioning, or other ergonomic changes impacting rider comfort and handling. Procedures Included Diagnostic Procedures: May include updated diagnostic steps or trouble codes specific to the 2003 model's revised components or software. Adjustment Procedures: Specific instructions for adjusting components like carburettor mixture, idle speed, clutch, or suspension settings if modified for the 2003 model. Troubleshooting Guidance: Targeted troubleshooting tips for issues potentially introduced or addressed by the 2003 model year updates. Technical Depth Depth Level: Intermediate to Advanced Focus: Specific technical modifications and their implementation for the 2003 RS125 Tuono, supplementing the base service manual. 📊 Manual Specifications File Format File Type: PDF Resolution: High (suitable for screen viewing and printing) Readability: Clear text and graphics Print Quality Printability: Yes Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Rotary Valve Controlled Two-Stroke Single Cylinder Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Cooling System: Liquid-Cooled Valvetrain: Rotary Valve Performance Horsepower Peak: Approximately 30-34 HP (Varies by market regulations and tuning) Torque Peak: Approximately 20-22 Nm (Varies by market regulations and tuning) Fuel System Carburetor Model: Dell'Orto PHBH 28 QD (or similar, specific to market and year) Fuel Type: Unleaded Gasoline (Octane rating typically 95 RON or higher recommended) Fuel Delivery: Carburetor with Automatic Choke Lubrication Oil System: Pre-mix or Automatic Oil Injection (depending on specific sub-model/market) Ignition Ignition System: Digital CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: 6-Speed Constant Mesh Sequential Manual Clutch Type: Wet Multi-plate Features Gear Ratios: Specific ratios would be detailed in the base service manual; updates might address shift mechanism refinements. Fluid Specifications Transmission Oil: Refer to base service manual for specific type and viscosity (e.g., API GL-4/GL-5, SAE 75W-90 or 80W-90 gearbox oil). 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 740 mm Height: Approx. 1050 mm Weights Dry Weight: Approx. 130 kg Fuel Tank Capacity: Approx. 14 Liters 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycles typically do not receive automotive crash test ratings like NCAP) Active Features Braking System Front: Disc Brake (typically dual piston caliper, ~320mm disc) Braking System Rear: Disc Brake (typically single piston caliper, ~220mm disc) Suspension Front: Upside-down telescopic fork (e.g., Marzocchi or similar), adjustability may vary. Suspension Rear: Monoshock swingarm (e.g., Sachs or similar), preload and rebound adjustability common. Passive Features Lighting: Halogen Headlight, LED Tail Light Instrumentation: Analog Tachometer, Digital Speedometer, Odometer, Trip Meter, Coolant Temperature Gauge. 💡 Technology Features Infotainment Infotainment System: N/A (Basic motorcycle instrumentation, no infotainment system). Driver Assistance Driver Assistance Features: N/A (No electronic driver assistance systems like ABS or traction control typically found on this model and year). Connectivity Connectivity Options: N/A (No Bluetooth or smartphone integration). 🔧 Maintenance Service Intervals Oil Change Interval: Refer to base service manual, typically every 3,000-5,000 km or annually, but checking two-stroke oil level frequently is critical. Spark Plug Replacement: Refer to base service manual, often around 5,000-10,000 km, depending on plug type and usage. Air Filter Cleaning Replacement: Refer to base service manual, frequent checks and cleaning recommended, replacement every 10,000-15,000 km. Top End Rebuild Recommendation: For high-performance two-strokes like the RS125, piston/ring inspection or replacement is often recommended between 15,000-25,000 km depending on usage and maintenance quality. Fluid Specifications Engine Oil Type: Fully Synthetic 2-Stroke Engine Oil with JASO FD or ISO-L-EGD rating. Coolant Type: Ethylene Glycol based antifreeze mixture (50/50 with distilled water recommended). Brake Fluid...