🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 2004 Codes Product Code: RS250-2004-SRM 👋 Introduction Market Position Segment: High-performance two-stroke sportbike. Competitive Analysis Competitors: Yamaha YZF-R6, Suzuki GSX-R600, Kawasaki Ninja ZX-6R (early models), Honda CBR600RR. Key Features Heritage: Successor to the iconic Aprilia AF1 and Rotax-powered RS series, known for sharp handling and potent two-stroke performance. Design Philosophy: Race-bred technology adapted for the street, lightweight chassis, aerodynamic bodywork. 📋 Manual Details Coverage Areas Systems Covered: Engine, Fuel System, Ignition System, Cooling System, Exhaust System, Transmission, Clutch, Chassis, Suspension (Front & Rear), Brakes (Front & Rear), Electrical System, Bodywork, Instruments, Specifications, Troubleshooting, Maintenance Page Count Pages: 300+ Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Disassembly, inspection, reassembly of engine components (pistons, cylinders, crankshaft, connecting rods, bearings, seals). Fuel System: Carburetor overhaul (Mikuni T M35), fuel pump, fuel lines, fuel tank maintenance. Ignition System: CDI unit, ignition coils, spark plug specifications, timing adjustments. Cooling System: Radiator, cooling fan, coolant specifications, bleeding procedures. Exhaust System: Exhaust pipe and silencer maintenance, power valve system (APECSDS) operation and adjustment. Transmission: Gearbox disassembly, inspection, reassembly, gear shift mechanism, clutch operation, clutch fluid specifications. Chassis And Frame: Frame inspection, steering head bearing maintenance, rear swingarm pivot and bearing service. Front Suspension: Fork assembly disassembly, oil type and level specifications, seal replacement, spring preload adjustments. Rear Suspension: Shock absorber service, linkage system maintenance, spring preload adjustment. Front Brakes: Brake caliper overhaul, pad replacement, disc inspection, master cylinder service, brake fluid type (DOT 4). Rear Brakes: Brake caliper overhaul, pad replacement, disc inspection, master cylinder service, brake fluid type (DOT 4). Electrical System: Wiring diagrams, component testing (alternator, starter motor, battery), lighting system, instrument cluster. Bodywork And Fairings: Fairing removal and installation, seat and tank removal, component replacement. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, brake fluid changes, coolant checks, spark plug replacement. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues, fault finding charts. Major Repairs: Engine rebuilds, transmission overhaul, suspension component replacement, brake system overhauls. Component Overhaul: Detailed instructions for rebuilding carburetors, brake calipers, master cylinders, and suspension units. Electrical Diagnostics: Testing of ignition system components, charging system, and starter circuits with specified voltages and resistances. Technical Depth Depth: Comprehensive from basic maintenance to complete engine and chassis rebuilds, suitable for professional mechanics and experienced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick access to information. Print Quality Image Resolution: High-resolution images and diagrams for clarity. Binding Type Binding: N/A (Digital) Paper Type Paper: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, V-twin Displacement: 249.2 cc Bore X Stroke: 51.0 x 62.5 mm Compression Ratio: 7.2:1 (approx.) Performance Horsepower: Approx. 70 HP @ 11,000 RPM (stock, variations exist) Torque: Approx. 40 Nm @ 10,000 RPM (stock) Fuel System Carburetors: 2 x Mikuni T M35 flat-slide carburetors Fuel Type: Unleaded gasoline (95 RON or higher recommended) Oil Mixing: Pre-mix or separate oil injection system (Rotax Oil Injection System - ROIS). Engine Internals Power Valves: APECSDS (Aprilia Performance Electronic Control System for Exhaust Valves). 🔧 Transmission Standard Type: 6-speed sequential manual Features Clutch Type: Wet multi-plate clutch Clutch Fluid: DOT 4 brake fluid 📐 Dimensions Exterior Length: Approx. 1960 mm Width: Approx. 710 mm (at handlebars) Height: Approx. 1120 mm (at seat) Weights Dry Weight: Approx. 140 kg Wet Weight: Approx. 155 kg (estimated with fluids) Other Wheelbase: Approx. 1370 mm 🛡️ Safety Features Active Features Brakes: Dual front disc brakes (320mm), single rear disc brake (240mm) with 4-piston calipers (front) and 2-piston calipers (rear). Passive Features Frame Construction: Aluminum alloy twin-spar frame for rigidity and light weight. 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, speedometer, coolant temperature gauge, odometer, trip meter, warning lights. Driver Assistance Electronics: APECSDS electronic power valve control for improved power delivery across the rev range. Connectivity Features: N/A (Basic electronics focus on performance). 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000 km or 6 months, whichever comes first (refer to manual for exact spec). Spark Plug Replacement: Every 6,000 km or 12 months (NGK BR9EG or equivalent recommended). Chain Lubrication: Every 500 km or after washing/riding in rain. Chain Adjustment: When slack exceeds specified limits (refer to manual). Fluid Specifications Engine Oil Type: 2-stroke pre-mix oil (API TC, JASO FD or better recommended). Coolant Type: Ethylene glycol based coolant with corrosion inhibitors (50% mixture with distilled water). Brake Fluid: DOT 4. Fork Oil: SAE 5W or 10W (specified in manual, typically Showa SS-05 or similar). Known Issues Common Problems: Two-stroke engine sensitivity to maintenance, potential for carbon build-up if ridden gently. 📚 Vehicle History Brand Heritage Manufacturer: Aprilia S.p.A., an Italian manufacturer known for performance motorcycles. Model Evolution Development: Evolved from the RS...