🏷️ Basic Information Identification Make: Aprilia Model: RS 250 Model Nickname: The Two-Stroke Legend Codes Vin Decoder Prefix: ZDM 👋 Introduction Market Position Target Audience: Aprilia RS 250 owners, mechanics, enthusiasts requiring in-depth technical information. Competitive Analysis Value Proposition: Provides dealership-level technical data essential for maintaining and repairing the performance of the iconic Aprilia RS 250. Key Features Manual Features: Step-by-step instructions, clear pictures, exploded view illustrations, schematics, specifications. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Troubleshooting, Diagnostics Page Count Estimated Pages: 300-500 Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine assembly, disassembly, tuning, carburetion, lubrication, cooling, ignition system, exhaust system. Transmission: Gearbox, clutch (wet multi-plate), shift mechanism, final drive (chain). Chassis: Frame, suspension (front forks, rear shock absorber), steering system, wheels, brakes (front and rear). Electrical: Wiring diagrams, lighting, ignition system, battery, starter, instrument panel, charging system. Bodywork: Fairings, seat, fuel tank, fenders, graphics. Procedures Included Maintenance: Routine inspections, lubrication, filter changes, chain adjustment, brake pad replacement, spark plug replacement. Repair: Engine rebuilds, gearbox overhauls, suspension component replacement, brake system repairs, electrical component troubleshooting and replacement. Troubleshooting: Diagnostic charts, common problems and solutions, electrical fault finding. Technical Specifications: Torque values, clearances, fluid capacities, electrical values, performance data. Technical Depth Depth: Comprehensive from basic owner maintenance to full engine and chassis rebuilds. 📊 Manual Specifications File Format File Type: Digital PDF Print Quality Image Resolution: High-resolution for clear viewing and printing of diagrams and illustrations. Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, V-twin (derived from Suzuki RG250 Gamma engine) Engine Displacement: 249 cc (249.4 cm³) Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: 7.5:1 (or similar, varies by year/market) Carburetion: Twin 30.5 mm Mikuni TM30 flat-slide carburetors Ignition: Digital electronic ignition Performance Horsepower: Approx. 70 HP (51 kW) @ 11,000 rpm (European/US versions) Torque: Approx. 4.2 kgf·m (41 Nm; 30 lb·ft) @ 10,500 rpm Fuel System Fuel Type: Unleaded gasoline (95 RON or higher recommended) Fuel Mixture: Automatic oil injection system (separate oil tank) Cooling System Cooling Type: Liquid-cooled Coolant Type: Ethylene glycol based coolant, typically 50/50 mix with distilled water. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh sequential gearbox Clutch: Wet multi-plate, cable operated Features Final Drive: Chain drive, 520 pitch Gear Ratios: Specific ratios detailed in manual (e.g., 1st: 2.5, 2nd: 1.8, 3rd: 1.4, 4th: 1.15, 5th: 1.0, 6th: 0.88) Transmission Oil Type: SAE 75W/90 or 10W/40 API GL-4 or GL-5 (refer to manual for specific viscosity and API rating). Transmission Oil Capacity: Approx. 0.75 Liters (refer to manual for exact capacity) 📐 Dimensions Exterior Length: Approx. 1995 mm (78.5 in) Width: Approx. 710 mm (28.0 in) Height: Approx. 1100 mm (43.3 in) Wheelbase: Approx. 1375 mm (54.1 in) Weights Dry Weight: Approx. 141 kg (311 lbs) Wet Weight: Approx. 155 kg (342 lbs) Fuel Tank Capacity: 16 Liters (4.2 US gal) 🛡️ Safety Features Ratings Crash Test Results: N/A (Motorcycle safety ratings vary by region and testing body) Active Features Braking System: Dual front disc brakes (300mm), single rear disc brake (210mm). Usually with 4-piston calipers (e.g., Brembo or Nissin). Suspension Damping: Adjustable front forks (preload, compression, rebound), adjustable rear shock absorber (preload, rebound). Passive Features Lighting: Halogen headlamp, LED taillight (on some later models), turn signals. 💡 Technology Features Infotainment Infotainment System: N/A (Performance motorcycle focused on riding dynamics). Driver Assistance Rider Aids: N/A (No electronic rider aids like ABS or traction control on standard models). Engine Management Engine Management System: Electronic ignition and automatic oil injection, manual carburetion tuning. 🔧 Maintenance Service Intervals Oil Change: Every 3,000 - 5,000 km or annually (refer to manual for specific recommendation). Spark Plug Replacement: Every 6,000 - 10,000 km (depending on plug type). Air Filter Cleaning Replacement: Every 3,000 - 6,000 km. Chain Maintenance: Lubricate and adjust every 500 - 1,000 km, inspect regularly. Fluid Specifications Brake Fluid Type: DOT 4 (refer to manual for exact specification and replacement interval). Coolant Specifications: Ethylene glycol based, 50% distilled water mix (refer to manual for specific freeze point). 2 Stroke Oil Type: High-quality 2-stroke synthetic or semi-synthetic oil specifically designed for high-performance, liquid-cooled engines (refer to manual for approved brands/specifications). Known Issues Common Problems: Carburetor synchronization issues, reed valve wear, power valve carbon build-up, starter motor solenoid failure, gearbox wear on older models. Maintenance Tips: Regular cleaning and adjustment of the carbs, proper 2-stroke oil usage, ensuring adequate cooling system maintenance are crucial for longevity. 📚 Vehicle History Brand Heritage Manufacturer: Aprilia is an Italian manufacturer known for its racing pedigree, particularly in the Grand Prix circuit. Model Evolution Development Basis: Developed by Aprilia using the Suzuki RGV250 Gamma V-twin engine and chassis components, significantly re-engineered and...