🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 1998 👋 Introduction Market Position Segment: High-performance sportbike, renowned for its racing heritage and aggressive styling. Competitive Analysis Competitors: Directly competed with other 250cc two-stroke sportbikes of the era, such as the Yamaha YZF-R25, Suzuki RGV250, and Kawasaki KR-1S. Key Features Engine Technology: Liquid-cooled, 90-degree V-twin, two-stroke engine with a focus on high power output and responsive acceleration. Chassis Design: Aluminium twin-spar frame, derived from Aprilia's racing experience, offering excellent rigidity and handling. Suspension: Performance-oriented suspension components, typically including upside-down front forks and a monoshock rear. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Page Count Total Pages: 351 Manual Type Type: Service Repair Manual Language Languages: English, Italian, Spanish Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Comprehensive coverage including disassembly, inspection, assembly, and troubleshooting. Fuel Supply System: Detailed procedures for carburetor adjustment, fuel pump, fuel lines, and tank maintenance. Cooling System: Radiator, water pump, thermostat, coolant specifications, and leak testing. Electrical System: Wiring diagrams, ignition system, lighting, charging system, starter motor, and troubleshooting of electrical faults. Procedures Included Maintenance: Routine maintenance tasks, service intervals, lubrication points, and fluid changes. Troubleshooting: Diagnostic procedures for common problems, fault identification, and repair strategies. Repair: Step-by-step instructions for dismantling, repairing, and reassembling major components and systems. Technical Depth Diagnostic Level: Advanced diagnostics, including electrical system testing and engine tuning. Rebuild Scope: Complete engine rebuild procedures, including tolerances and specifications. 📊 Manual Specifications File Format File Type: PDF Print Quality Readability: High-resolution scans ensuring clear text and diagrams for easy reading and printing. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) Navigation Bookmarks: Yes ⚙️ Engine Specifications Primary Engine Type: Liquid-cooled, 90° V-twin, two-stroke Displacement: 249 cc Bore X Stroke: 51.0 mm x 60.5 mm Compression Ratio: 7.5:1 (typical, may vary) Performance Horsepower: Approx. 70 HP @ 11,000 RPM (performance-tuned, may vary by market/restriction) Torque: Approx. 39 Nm @ 10,500 RPM Fuel System Carburetors: Twin Dell'Orto PHBH 28 (or similar specification) with reed valve induction. Fuel Type: Unleaded gasoline with 2-stroke oil pre-mix or automatic oil injection system. Lubrication Oil Type: High-quality 2-stroke motorcycle engine oil meeting specified API TC or JASO FD standards. 🔧 Transmission Standard Type: 6-speed constant mesh sequential gearbox. Features Clutch: Wet multi-plate clutch. Final Drive: O-ring sealed chain drive. 📐 Dimensions Exterior Length: Approx. 2000 mm Width: Approx. 720 mm Height: Approx. 1140 mm Weights Dry Weight: Approx. 133 kg Wet Weight: Approx. 150 kg (with all fluids) Fuel Capacity Fuel Tank Capacity: 16 Liters 🛡️ Safety Features Ratings Safety Standard: Motorcycle safety standards of the era; specific crash test ratings are not generally applicable to this type of vehicle. Active Features Braking System: Dual front disc brakes with 4-piston calipers; single rear disc brake with 2-piston caliper. Suspension Design: Ensures stability and rider control during cornering and braking. Passive Features Chassis Rigidity: Contributes to predictable handling and stability. 💡 Technology Features Infotainment Features: Basic motorcycle instrumentation of the era; analog tachometer, speedometer, odometer, and essential warning lights. Driver Assistance Features: None in the modern sense; focus is on rider input and mechanical feedback. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/time intervals; typically every 3,000-5,000 km. Spark Plug Replacement: Refer to manual; common intervals are around 5,000-10,000 km depending on plug type and usage. Chain Lubrication: Regularly, at least every 500 km and after riding in wet conditions. Fluid Specifications Coolant Type: Ethylene glycol-based coolant with anti-corrosion additives, typically a 50/50 mix with distilled water. Brake Fluid Type: DOT 4 or DOT 5.1 brake fluid. Transmission Oil Type: Refer to manual; usually a specific gear oil for wet clutches or SAE 10W-40 motorcycle engine oil if the gearbox shares oil with the engine (as is common in 2-strokes). Known Issues Power Valve Sticking: Common issue on two-stroke engines, requiring regular cleaning and lubrication of the exhaust power valve system. Carburetor Synchronization: Crucial for smooth engine operation and proper fuel mixture; requires periodic checks and adjustments. Cooling System Leaks: Can occur at hose connections or radiator seals due to age and vibration. Clutch Wear: Wear on clutch plates and springs is normal with use and requires periodic inspection and replacement. 📚 Vehicle History Brand Heritage Manufacturer: Aprilia is an Italian manufacturer with a strong history in motorcycle racing, particularly in Grand Prix and Superbike categories. Model Evolution Development Basis: The RS250 was developed by Aprilia using components and technology from Suzuki's RGV250 Gamma, which Aprilia had a licensing agreement for. Production Production Period: Produced from 1995 to 2004. Key Variants: MK I (1995-1997), MK II (1998-2004), with minor updates including styling and chassis refinements. 🏆 Awards & Recognition Recognitions Performance Awards: The RS250 was highly praised by motorcycle publications of its time for its sharp...