🏷️ Basic Information Identification Make: Aprilia Model: RS250 Codes Model Codes: AP821 👋 Introduction Market Position Segment: Lightweight Supersport / Two-Stroke Performance Motorcycle Competitive Analysis Key Competitors: Suzuki RGV250, Yamaha TZR250, Honda NSR250 Key Features Engine Type: Liquid-cooled, 90-degree V-twin, two-stroke Performance Focus: Renowned for sharp handling and potent two-stroke power delivery. 📋 Manual Details Coverage Areas Applicable Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004 Page Count Estimated Pages: Hundreds (as described in product info, specific number not provided) Manual Type Type: Factory Service Repair Manual Language Language: English (typical for Aprilia factory manuals) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, diagnostics, power valve operation, cooling system, lubrication system Transmission: Gearbox removal, inspection, assembly, clutch operation, shift mechanism Chassis And Frame: Frame inspection, suspension (front fork and rear shock absorber), steering system, wheel bearings Brakes: Brake system maintenance, bleeding procedures, caliper service, master cylinder overhaul, disc inspection Electrical System: Wiring diagrams, ignition system, charging system, lighting, instrumentation, starter motor, battery service Fuel System: Carburetor tuning and service (likely Mikuni TM34), fuel tank maintenance, fuel lines Exhaust System: Exhaust system components, installation, and maintenance Cooling System: Radiator service, coolant specifications, thermostat operation Procedures Included Scheduled Maintenance: Detailed service intervals for oil changes, filter replacements, spark plug checks, chain adjustments, brake pad inspections Troubleshooting: Diagnostic procedures for common issues, fault finding guides Repair And Rebuild: Step-by-step instructions for component removal, repair, and reassembly Performance Tuning: Carburetor jetting, ignition timing adjustments, power valve calibration Torque Specifications: Precise torque values for critical fasteners across all systems Technical Depth Depth: Comprehensive, covering from basic maintenance to full engine and chassis rebuilds. Includes detailed diagrams and schematics. 📊 Manual Specifications File Format PDF Quality: High resolution, searchable text (expected for factory PDFs), printable pages Binding Type Binding: Not Applicable (Downloadable PDF) Paper Type Paper Type: Not Applicable (Downloadable PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 90° V-twin, two-stroke Displacement: 249 cc (249.3 cc) Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: 7.2:1 Valvetrain: Reed valve induction with Aprilia's APCS (Aprilia Performance উত্তেজনা System) - electronic power valve Performance Horsepower Claimed: Approx. 65-70 hp (varies slightly by market/year, typically restricted for A2 licensing in some regions) Torque Claimed: Approx. 28-30 lb-ft Fuel System Carburetors: Twin Mikuni TM34SS (flat-slide, constant velocity) Fuel Type: Unleaded gasoline (minimum 95 octane recommended), two-stroke oil for premixing Lubrication Oil System: Autolube automatic oil injection system 🔧 Transmission Standard Type: 6-speed, constant mesh sequential gearbox Features Clutch: Wet, multi-plate, hydraulically operated Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1980 mm (77.95 in) Width: Approx. 710 mm (27.95 in) Height: Approx. 1140 mm (44.88 in) Weights Dry Weight: Approx. 141 kg (310.85 lbs) Wet Weight: Approx. 164 kg (361.56 lbs) Capacity Fuel Tank Capacity: 16 liters (4.2 US gallons) 🛡️ Safety Features Ratings Crash Test Results: Not applicable to motorcycles of this era Active Features Braking System: Dual front disc brakes with twin-piston calipers, single rear disc brake with twin-piston caliper Suspension Type: Upside-down telescopic front forks (Showa), monoshock rear suspension Passive Features Lighting: Halogen headlamp, LED taillight 💡 Technology Features Infotainment Display: Analog speedometer and tachometer, digital multi-function display for odometer, trip meter, temperature. Driver Assistance Electronics: Aprilia Performance Excitation System (APCS) - electronic control of the exhaust powervalve for improved low-end torque and broader powerband. Connectivity Features: Not applicable to this model year 🔧 Maintenance Service Intervals Oil Change Engine: Every 3,000 km or 6 months (refer to manual for specific details and API service classification) Spark Plug Check: Every 3,000 km or 6 months Chain Lubrication And Adjustment: Every 500 km or after riding in wet conditions Fluid Specifications Coolant: Ethylene glycol-based antifreeze mixed with distilled water (typically 50/50 ratio). Consult manual for specific Aprilia recommendations. Brake Fluid: DOT 4 Transmission Oil: SAE 10W-40 API GL-4 or GL-5 (refer to manual for specific Aprilia recommendations) Two Stroke Oil: High-quality synthetic two-stroke oil meeting JASO FD or ISO-L-EGD standards Known Issues Common Wear Items: Piston rings, clutch plates, power valve mechanisms (carbon build-up), electrical connectors. Carburetor Idling: Mikuni TM34 carbs can be sensitive to setup and may require regular cleaning and adjustment. Power Valve Sticking: Carbon build-up can cause the APCS power valve to stick, affecting performance. Regular cleaning is crucial. 📚 Vehicle History Brand Heritage Manufacturer: Aprilia, an Italian manufacturer known for racing heritage and innovative sportbikes. Model Evolution Heritage: The RS250 is based on the highly successful Suzuki RGV250 Gamma platform, with Aprilia incorporating its own chassis and styling elements, and a notable upgrade in electronics (APCS). Production Production Period: 1995 - 2004 (this manual covers the latter half of this period) Manufacturing Origin: Italy 🏆 Awards & Recognition Recognitions Motorsport Heritage: The RS250's race-derived technology and performance have earned it a strong following among...