🏷️ Basic Information Identification Make: Aprilia Model: RS250 Model Generation: MK II (often referred to as this generation despite no official MK II designation) Codes Chassis Codes: AP050000 onwards Engine Codes: Rotax 257-series (derived from Suzuki RGV250 VJ22) 👋 Introduction Market Position Market Position: Performance-oriented 250cc sportbike, known for its racing heritage and agile handling, often considered a direct competitor to Suzuki's RGV250 and Yamaha's TZR250. Competitive Analysis Competitive Analysis: The RS250 offered a premium Italian design and build quality coupled with a potent 2-stroke V-twin engine, positioning it as a high-performance option in its class. Key Features Key Features: Lightweight chassis, advanced suspension components (often featuring Öhlins rear shock), sharp styling, potent V-twin 2-stroke engine, excellent braking performance. 📋 Manual Details Coverage Areas Years Covered: 1998, 1999, 2000, 2001, 2002, 2003, 2004 Page Count Page Count: 350 Manual Type Manual Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF (Digital) 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, cooling system, lubrication system, ignition system, exhaust system. Transmission: Gearbox, clutch operation and maintenance, shift mechanism, lubrication. Fuel System: Carburetor identification (Dell'Orto PHBH 28 DD), fuel tank, fuel lines, fuel pump (if applicable to specific market configurations), oil injection system. Electrical System: Wiring diagrams, lighting system, charging system (stator, regulator/rectifier), battery, starter motor, ignition system components. Chassis And Suspension: Front fork (Showa or Marzocchi depending on year/variant), rear shock absorber (Öhlins on some variants), swingarm, steering head bearings, rear suspension linkage. Brakes: Front and rear brake caliper service, master cylinders, brake lines, rotor specifications, bleeding procedures, pad replacement. Bodywork And Frame: Fairing removal and installation, seat, fuel tank mounting, frame integrity checks, body panel fasteners. Wheels And Tires: Wheel bearing service, tire fitting and removal, recommended tire sizes, wheel balance. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, chain adjustment, spark plug service, coolant flushing. Troubleshooting: Diagnostic charts for common issues, electrical faults, engine performance problems, starting difficulties. Repair: Step-by-step instructions for component overhaul and replacement, including engine rebuilds, suspension rebuilds, and electrical component repair. Assembly Disassembly: Detailed instructions for the complete dismantling and reassembly of the motorcycle. Technical Data Tables: Specifications for torque settings, clearances, fluid capacities, and wear limits. Technical Depth Technical Depth: Comprehensive from basic rider maintenance to full engine and chassis rebuilds, including diagnostic procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans suitable for printing, with clear text and diagrams. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, V-twin Displacement: 249 cc Bore X Stroke: 54.0 mm x 54.5 mm Compression Ratio: 7.1:1 Power Delivery: Sprocket-driven, reed valve induction Performance Horsepower: Approx. 70-74 HP (at crankshaft, depending on market and tune) Torque: Approx. 26.5 ft-lbs (36 Nm) at 11,000 RPM Redline: 13,000 RPM Fuel System Carburetors: 2 x Dell'Orto PHBH 28 DD Fuel Type: Unleaded gasoline (min 95 RON recommended), 2-stroke oil for premix or separate oil injection system. Oil Injection: Automatic oil injection system (separate oil reservoir). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet, multi-plate, cable-actuated Features Gear Ratios: Detailed ratios available within the manual, tuned for sporty performance. Final Drive: Chain drive 📐 Dimensions Exterior Length: Approx. 1990 mm (78.3 in) Width: Approx. 710 mm (28.0 in) Height: Approx. 1135 mm (44.7 in) Wheelbase: Approx. 1360 mm (53.5 in) Weights Dry Weight: Approx. 140 kg (309 lbs) Wet Weight: Approx. 165 kg (364 lbs) Fuel Capacity: Approx. 16 Liters (4.2 US gallons) 🛡️ Safety Features Ratings Ratings: Motorcycle safety is primarily determined by rider skill and adherence to road laws. No formal crash ratings exist for this era of sportbikes. Active Features Active Features: Dual front disc brakes, single rear disc brake, balanced chassis for stability. Passive Features Passive Features: Frame integrity, fairing for aerodynamics and rider protection from elements. 💡 Technology Features Infotainment Infotainment Features: N/A - This is a performance sportbike from the late 90s/early 2000s, focused on rider experience rather than infotainment. Driver Assistance Driver Assistance Features: N/A - Focus is on rider input and control. Engine Management Engine Management System: Electronic ignition with CDI unit, ATAC (Automatic Tưbo Air Control) system for improved low-end torque and emissions, power valve (Rave) system for optimized exhaust port timing. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually. Engine oil for gearbox requires specific gear oil. Chain Adjustment Interval: Check and adjust every 1,000 km or as needed. Spark Plug Replacement Interval: Refer to manual, typically every 5,000-10,000 km depending on plug type and usage. Coolant Flush Interval: Every 1-2 years or as per manual recommendations. Fluid Specifications Engine Oil Type: API GL-4 or GL-5 gear oil, viscosity typically 10W-40 or 20W-50 (refer to manual for precise...