🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 1999 Vehicle Type: Sport Motorcycle Codes Chassis Code: AP81100 Engine Code: Rotax 257 (derived from Suzuki RG250 Gamma) 👋 Introduction Market Position Market Position: The Aprilia RS250 was a highly acclaimed two-stroke sportbike known for its potent performance, agile handling, and race-inspired design. It occupied a niche in the supersport market, appealing to riders seeking raw performance and track-day capability. Competitive Analysis Competitive Analysis: Competed directly with other 250cc two-stroke sportbikes of the era, such as the Yamaha YZF-R25, Honda NSR250, and Suzuki RGV250. It was often praised for its superior chassis and braking components, derived from larger Aprilia models. Key Features Key Features: Lightweight chassis, powerful V-twin two-stroke engine, advanced suspension and braking systems, aggressive styling, race-derived technology. 📋 Manual Details Coverage Areas Coverage Areas: Complete Factory Service Repair Manual Page Count Page Count: Hundreds of Pages Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine, Fuel System, Ignition System, Cooling System, Exhaust System, Transmission, Clutch, Drivetrain, Suspension (Front and Rear), Brakes (Front and Rear), Wheels, Tires, Electrical System, Lighting, Instruments, Frame, Bodywork, Chassis, Specifications, Troubleshooting, Maintenance Procedures Included Procedures Included: General Information, Troubleshooting, Engine Overhaul and Repair, Carburetor Adjustment and Rebuilding, Ignition System Diagnosis and Repair, Cooling System Maintenance, Exhaust System Service, Transmission Disassembly and Assembly, Clutch Service, Drivetrain Inspection and Repair, Suspension Adjustment and Overhaul, Brake System Bleeding and Repair, Wheel Bearing Replacement, Tire Mounting and Balancing, Electrical System Troubleshooting and Component Testing, Lighting System Repair, Instrument Cluster Service, Frame Inspection and Repair, Bodywork Panel Removal and Installation, Routine Maintenance Procedures, Lubrication Schedules, Torque Specifications, Component Testing Procedures Technical Depth Technical Depth: Comprehensive: From basic maintenance and fluid checks to in-depth engine rebuilds, electrical system diagnostics, and chassis component overhaul. Includes detailed diagrams, exploded views, and step-by-step instructions. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High Resolution, Printable Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 90-degree V-twin, two-stroke Displacement: 249 cc Bore X Stroke: 54.0 mm x 54.5 mm Compression Ratio: 7.2:1 (approx.) Induction: Reed valve intake with T.A.D. (Two-stroke Advanced डेरिवेशन) system Performance Horsepower: Approx. 65-70 hp @ 11,000 rpm (factory specifications, may vary with tuning) Torque: Approx. 40 Nm @ 10,000 rpm (factory specifications) Fuel System Carburetors: 2x Mikuni TM34SS (flat slide) Fuel Type: Unleaded gasoline, minimum 95 octane (RON) Lubrication Oil System: Automatic oil injection 🔧 Transmission Standard Transmission Type: 6-speed sequential, constant mesh Clutch Type: Wet, multi-plate Features Gear Ratios: Provided in manual (specific ratios for each gear) Final Drive: Chain driven (520 pitch, 108 links typical) 📐 Dimensions Exterior Length: Approx. 1980 mm Width: Approx. 700 mm Height: Approx. 1080 mm Wheelbase: Approx. 1375 mm Weights Dry Weight: Approx. 142 kg Fuel Tank Capacity: 16 liters 🛡️ Safety Features Active Features Brakes Front: Dual 320 mm discs, 4-piston calipers (e.g., Brembo) Brakes Rear: Single 220 mm disc, 2-piston caliper Suspension Front: Inverted telescopic forks, adjustable preload, compression, and rebound damping (e.g., Showa, Marzocchi) Suspension Rear: Monoshock, adjustable preload and rebound damping (e.g., Sachs, Öhlins option) Passive Features Frame Type: Aluminum twin-spar frame Tire Size Front: 120/60-17 Tire Size Rear: 160/60-17 💡 Technology Features Infotainment Infotainment System: N/A (Pure sport motorcycle, no infotainment system) Driver Assistance Driver Assistance Features: N/A (Analog controls, no electronic rider aids) Instrumentation Instrumentation: Analog tachometer, speedometer, temperature gauge, odometer, trip meter, indicator lights. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/time intervals based on usage (typically every 3,000-5,000 km for synthetic) Spark Plug Replacement: Refer to manual (e.g., every 5,000-10,000 km, dependent on plug type) Chain And Sprockets Inspection: Regular inspection and lubrication every 500-1000 km; replacement based on wear indicators Top End Rebuild Recommendation: Recommended every 15,000-20,000 km for optimal performance and longevity, depending on riding style and tuning. Fluid Specifications Engine Oil Type: High-quality 2-stroke synthetic oil (e.g., Motul 7100 2T, Castrol TTS, Yamalube 2R) Coolant Type: Ethylene glycol-based antifreeze with corrosion inhibitors, 50/50 mix with distilled water Brake Fluid Type: DOT 4 Transmission Oil Type: Specific gear oil for wet clutches, SAE 10W-30 or 10W-40 (refer to manual for exact specification) Known Issues Known Issues: Power valve seizure (due to carbon buildup), carburetor jetting sensitivity, clutch wear, potential for crankshaft seal leaks, ignition coil failure. The manual addresses troubleshooting and repair for these common concerns. 📚 Vehicle History Brand Heritage Brand Heritage: Aprilia has a rich history in motorsport, particularly in Grand Prix racing, which heavily influenced the development of the RS250. The brand is synonymous with performance and innovative engineering. Model Evolution Model Evolution: The RS250 was a evolution of Aprilia's racing technology. It leveraged Suzuki's...