🏷️ Basic Information Identification Make: Aprilia Model: RS 250 Year: 2004 Codes Platform Code: RS 250 (MK II) 👋 Introduction Market Position Positioning: High-performance sportbike for enthusiast riders, often compared to Italian racing heritage. Competitive Analysis Competitors: Honda CBR250RR, Yamaha YZF-R25, Suzuki GSX-R250 (where applicable by displacement and class) Key Features Engine Type: Two-stroke V-twin, renowned for its power and aggressive sound. Chassis Design: Lightweight and agile, with a focus on track-inspired handling. Manual Value Proposition: Provides dealer-level access to technical information, enabling DIY maintenance and repairs, crucial for this enthusiast-focused model. 📋 Manual Details Coverage Areas Primary Coverage: Full Factory Service and Repair Page Count Estimated Page Count: Approx. 300-400 pages (typical for this model and era) Manual Type Type: Service Manual / Workshop Manual Authenticity: Same as official dealer workshop manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Lubrication System, Cooling System, Exhaust System Chassis And Suspension: Frame, Forks, Rear Shock Absorber, Wheels, Tires, Steering Braking System: Front and Rear Brakes, Master Cylinders, Calipers, Lines Electrical System: Ignition System, Lighting, Instruments, Wiring Diagrams, Battery, Charging System Bodywork And Cosmetics: Fairings, Seat, Fuel Tank, Decals Procedures Included Maintenance: Periodic Maintenance, Tune-Up Procedures, Fluid Changes, Filter Replacements Repair And Rebuild: Engine Overhaul, Transmission Servicing, Suspension Overhaul, Brake System Repair Diagnostics And Troubleshooting: Fault Finding, Diagnostic Codes, Step-by-Step Troubleshooting Guides Assembly Disassembly: Detailed step-by-step instructions for disassembling and reassembling all major vehicle components. Technical Depth Depth: Comprehensive: From basic maintenance to complete engine and chassis rebuilds, including detailed specifications. Specifications Detail: Torque settings for all fasteners, component tolerances, electrical resistance values, diagnostic data. Wiring Diagrams: Comprehensive electrical schematics for all circuits, including lighting, ignition, and instrumentation. 📊 Manual Specifications File Format Requirements: Adobe PDF Reader Compression: Requires WinZip or equivalent for extraction Searchability: Likely searchable PDF content Print Quality Printability: Yes, printable pages Interactivity Zoom Functionality: Yes, zoom in/out for diagrams and text Compatibility Operating Systems: Compatible with all versions of Windows and Mac ⚙️ Engine Specifications Primary Engine Type: Liquid-cooled, 2-stroke, V-twin Displacement: 249 cc (249.3 cm³) Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: 7.5:1 (typical for this era, may vary slightly) Intake System: Reed valve induction Performance Horsepower: Approx. 65-70 HP (varies by market and tuning) Torque: Approx. 40-45 Nm (varies by market and tuning) Power Delivery: Aggressive, with a strong mid-range and top-end rush characteristic of performance two-strokes. Fuel System Carburetion: 2 x Mikuni TM34SS flat-slide carburetors Fuel Type: Unleaded gasoline (minimum 95 RON recommended for optimal performance) Lubrication System: Premix or Autolube oil injection system Oil Type: High-quality 2-stroke motorcycle oil (API TC, JASO FD or FD rated) 🔧 Transmission Standard Type: 6-speed, constant mesh Features Clutch: Wet, multi-plate Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1985 mm Width: Approx. 720 mm Height: Approx. 1115 mm Weights Dry Weight: Approx. 142 kg Wet Weight: Approx. 165 kg Fuel Capacity: 16 Liters 🛡️ Safety Features Passive Features Frame Type: Aluminum twin-spar frame Braking System Components: Dual front discs (e.g., 320mm) with radial-mount calipers, single rear disc (e.g., 220mm) Tires Front: 120/70 ZR17 M/C Tires Rear: 160/60 ZR17 M/C Active Features Lighting: Halogen headlight, LED taillight (typical) 💡 Technology Features Infotainment Instrumentation: Analog tachometer, speedometer, coolant temperature gauge, trip meters, and warning lights. Driver Assistance Assist Systems: None (This is a pure sportbike from an era before significant electronic rider aids). 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual: Typically every 3,000-5,000 km or annually. Spark Plug Replacement: Refer to manual: Typically every 5,000-10,000 km Chain And Sprockets Inspection: Every 1,000-2,000 km or as needed Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze coolant (50/50 mix with distilled water) Brake Fluid Type: DOT 4 Fork Oil Type: SAE 5W or 10W (specific viscosity detailed in manual) Known Issues Common Wear Items: Power valve mechanisms, crankshaft seals, stator coils, exhaust petal valves. Carburetor Tuning: Can be sensitive to altitude and temperature, requiring proper jetting and synchronization. Electrical Connections: Corrosion in connectors can lead to intermittent electrical issues. 📚 Vehicle History Brand Heritage Brand Focus: Aprilia is an Italian manufacturer with a strong racing heritage, particularly in Grand Prix racing, renowned for its sportbikes. Model Evolution Development Basis: Based on the Suzuki RG250 Gamma platform through a licensing agreement, but significantly re-engineered by Aprilia. Generations: The 2004 model represents the later iteration (MK II) of the RS 250, featuring chassis and engine refinements over the earlier MK I. Production Production Years: 1995 - 2003 (for most markets, 2004 may refer to late production or specific regional models)