🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 1998 Codes Chassis Code: AP000 Engine Code: Rotax 257 👋 Introduction Market Position Market Position: High-performance lightweight sportbike, positioned as a competitor to contemporary 250cc two-stroke racing replicas, offering exceptional handling and a potent engine for its class. Competitive Analysis Competitive Analysis: Competed directly with models such as the Yamaha YZF-R25, Honda CBR250RR, and Kawasaki ZXR250. Known for its superior chassis dynamics derived from its larger sibling, the RS125, and a powerful twin-cylinder engine. Key Features Key Features: Lightweight chassis, powerful V-twin two-stroke engine, advanced suspension components, racing-inspired ergonomics, high-performance braking system. 📋 Manual Details Coverage Areas Coverage Areas: Full Service and Repair Page Count Page Count: Approximately 300+ Manual Type Manual Type: Service Repair Manual Language Language: English Format Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Engine Assembly, Carburetion, Ignition System, Cooling System, Lubrication System, Exhaust System Transmission Systems: Clutch, Gearbox, Drive Chain Maintenance Chassis Systems: Frame, Front Suspension (Forks), Rear Suspension (Monoshock), Steering System Braking Systems: Front and Rear Brake Calipers, Master Cylinders, Hoses, Pads, Discs Electrical Systems: Wiring Diagrams, Battery, Charging System, Lighting, Instruments, Ignition Switch Bodywork And Fittings: Fairings, Seat, Fuel Tank, Handlebars, Footpegs, Body Panels Procedures Included Maintenance Procedures: Routine Inspections, Oil Changes, Filter Replacements, Chain Adjustment, Spark Plug Service Repair Procedures: Engine Rebuilds, Carburetor Tuning and Overhaul, Suspension Overhaul, Brake System Bleeding and Component Replacement, Electrical Component Testing and Replacement Troubleshooting Guides: Diagnostic Charts for Common Problems, Symptom-Based Troubleshooting Special Tools: Identification and usage of specialized tools required for specific repair procedures Technical Depth Technical Depth: Comprehensive (from basic maintenance to full engine and chassis rebuilds) 📊 Manual Specifications File Format File Format: PDF Searchable Text: Yes Printable: Yes Print Quality Print Quality: High Resolution (suitable for professional printing if desired) 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 mm x 54.5 mm Compression Ratio: 7.2:1 Performance Horsepower: Approx. 70 hp @ 11,000 rpm (claimed, at crankshaft) Torque: Approx. 28 lb-ft @ 10,000 rpm (claimed, at crankshaft) Fuel System Carburetors: Dual Mikuni TM34SS flat-slide Fuel Type: Unleaded gasoline (min. 95 octane recommended) Ignition Ignition System: Electronic CDI Cooling Cooling System: Liquid-cooled with electric fan Lubrication Lubrication System: Premix or Automatic Oil Injection (depending on market/variant) 🔧 Transmission Standard Transmission Type: 6-speed manual sequential Clutch Type: Wet multi-plate Final Drive: Chain drive Features Gear Ratios: Detailed ratios provided in manual Transmission Fluid: Manual specifies appropriate gear oil type (e.g., SAE 80W-90 GL-4) 📐 Dimensions Exterior Length: Approx. 1980 mm Width: Approx. 720 mm Height: Approx. 1100 mm Wheelbase: Approx. 1370 mm Weights Dry Weight: Approx. 138 kg (claimed) Wet Weight: Approx. 156 kg (estimated with fluids) Capacities Fuel Tank Capacity: 16 Liters Oil Tank Capacity: 1.2 Liters (for oil injection models) 🛡️ Safety Features Ratings Safety Ratings: Not applicable (motorcycle, safety is rider and design dependent) Active Features Braking System: Dual front disc brakes with 4-piston calipers, single rear disc brake with 2-piston caliper. Advanced brake fluid specifications and bleeding procedures detailed. Suspension System: Adjustable front forks (preload, compression, rebound) and adjustable rear monoshock contribute to stability and control. Passive Features Chassis Design: Lightweight and rigid aluminum twin-spar frame for superior handling and rider feedback. 💡 Technology Features Infotainment Infotainment System: N/A (Sportbike, focus on performance and rider interaction) Driver Assistance Driver Assistance Features: N/A (No electronic rider aids typical for the era) Instrumentation Instrumentation: Analog tachometer, speedometer, coolant temperature gauge, neutral indicator, turn signal indicators, high beam indicator, oil warning light. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/time intervals based on usage, typically every 3,000-5,000 km. Spark Plug Replacement: Recommended at 5,000-10,000 km, depending on plug type and operating conditions. Manual specifies correct plug type and gap. Chain Lubrication And Adjustment: Frequent checks and adjustments recommended, especially under heavy use. Manual provides specific slack specifications. Carburetor Cleaning And Sync: Recommended annually or every 5,000-10,000 km, or if performance issues arise. Manual details procedure. Fluid Specifications Engine Oil Type: Two-stroke pre-mix oil (JASO FD or TCW3 certified) or specific Aprilia injector oil. Coolant Type: Ethylene glycol-based coolant with corrosion inhibitors (50/50 mix with distilled water). Brake Fluid Type: DOT 4 (or as specified in manual for original equipment). Fork Oil Type And Level: Specific viscosity and level detailed in manual (e.g., Showa SS-01 or equivalent). Known Issues Known Issues: Potential for power valve issues if not properly maintained, carburetor synchronization sensitivity, reed valve wear, and vibration-related fastener loosening. Manual addresses these with specific inspection and repair guidance. 📚 Vehicle History Brand Heritage Brand Heritage: Aprilia, an Italian manufacturer, has a strong racing heritage, particularly in smaller displacement categories and two-stroke racing,...