🏷️ Basic Information Identification Make: Aprilia Model: RS250 Codes Chassis Code: RS250 Engine Code Family: Rotax V-Twin 2-Stroke 👋 Introduction Market Position Description: The Aprilia RS250 was a high-performance, two-stroke sportbike that dominated the 250cc racing class and offered a thrilling street riding experience. It competed against models like the Yamaha YZF-R250 and Suzuki RGV250. Competitive Analysis Key Advantage: The RS250's performance, handling derived from its Grand Prix heritage, and its distinctive V-twin 2-stroke engine made it a standout in its segment. Key Features Performance Focus: Emphasis on lightweight construction, powerful 2-stroke acceleration, and agile handling. Dealer Quality: Manual mirrors the official documentation provided to authorized Aprilia service centers, ensuring accuracy and completeness. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service and Repair Secondary Coverage: Diagnostic, Troubleshooting, Maintenance, Overhaul Page Count Estimated Page Count: 300+ Manual Type Type: Professional Workshop Manual Language Language: English Format Format: Downloadable Digital File (likely PDF) 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, and troubleshooting for the 2-stroke V-twin. Includes power valve systems, carburetion, ignition, and cooling. Transmission: Gearbox disassembly, inspection, repair, and assembly. Clutch system service, lubrication, and adjustment. Chassis Suspension: Front fork (Telescopic, Inverted) service, seal replacement, oil level and type specification. Rear shock absorber service, linkage system maintenance, and adjustment. Brakes: Front and rear brake system overhaul, including caliper service, master cylinder repair, hose replacement, fluid bleeding, and pad specifications. Electrical: Complete wiring diagrams, component testing, troubleshooting for ignition system, lighting, charging system, and control units. Fuel System: Carburetor tuning, cleaning, and rebuilding (likely Mikuni VM28SS). Fuel tank maintenance, petcock service. Exhaust: Exhaust system removal, installation, and maintenance of expansion chambers and silencers. Cooling System: Radiator service, coolant specifications, water pump inspection and repair. Frame Bodywork: Frame inspection, fairing removal and installation, seat and tank mounting. Procedures Included Maintenance: Routine maintenance tasks, oil changes, filter replacements, chain adjustment, bolt torque specifications. Troubleshooting: Diagnostic charts for common running issues, electrical faults, and mechanical problems. Repair: Step-by-step instructions for component replacement, rebuilds, and adjustments. Overhaul: Detailed instructions for complete engine and transmission rebuilds. Calibration: Carburetor synchronization and jetting guidelines, ignition timing checks. Technical Depth Depth: Comprehensive, suitable for professional technicians and experienced home mechanics. Diagnostic Capability: Advanced diagnostic procedures and fault-finding techniques. Rebuild Instructions: Detailed instructions for complete engine and gearbox rebuilds, including tolerances and specifications. 📊 Manual Specifications File Format Type: Digital (PDF) Searchability: Likely Searchable Text (OCR dependent) Printability: Printable Print Quality Quality: High Resolution (as per dealer specifications) Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Type: Liquid-cooled, 72-degree V-twin, 2-stroke Displacement: 249 cc (249.3 cc) Bore X Stroke: 54.0 mm x 54.5 mm Power Valve System: Aprilia Auto-Lube with Smart/A.E.S. (Aprilia Exhaust System) or similar active exhaust control Performance Horsepower Peak: 70 hp (approx. at crank) Torque Peak: 36 Nm (approx. at crank) Fuel System Carburetors: 2 x Mikuni VM28SS Fuel Type: Unleaded gasoline (95 RON or higher recommended) Oil Mixture: Pre-mix or separate oil injection system (Aprilia Auto-Lube) Ignition Type: Digital CDI 🔧 Transmission Standard Type: 6-speed constant mesh Features Clutch Type: Wet multi-plate Final Drive: Chain 📐 Dimensions Exterior Length: Approx. 1970 mm Width: Approx. 720 mm Height: Approx. 1135 mm Weights Dry Weight: Approx. 135 kg Wet Weight: Approx. 160 kg 🛡️ Safety Features Ratings Type: N/A (Motorcycle specific safety features apply) Active Features Braking System: Dual front disc brakes with twin-piston calipers, single rear disc brake with twin-piston caliper. Suspension Damping: Adjustable front forks and rear shock for optimized handling and stability. Passive Features Frame Construction: Aluminum twin-spar frame for rigidity and light weight. 💡 Technology Features Infotainment System: N/A (Focus on pure performance, no modern infotainment) Driver Assistance Features: N/A (No electronic rider aids present) 🔧 Maintenance Service Intervals Oil Change: Refer to manual for specific interval based on usage, typically every 3,000-5,000 km or annually. Spark Plug Replacement: Consult manual for specific recommendations based on plug type (e.g., NGK BR9EG). Chain Lubrication Adjustment: Regular checks every 500-1000 km, adjustment as needed. Engine Rebuild: Highly dependent on usage, but top-end rebuilds might be considered every 10,000-15,000 km for spirited riding. Fluid Specifications Fork Oil: Refer to manual for specific weight and level (e.g., Showa SS-02 or equivalent). Brake Fluid: DOT 4 (Recommended for consistent performance). Coolant: 50/50 mixture of ethylene glycol coolant and distilled water. 2-Stroke Oil: High-quality synthetic 2-stroke oil recommended for optimal lubrication and clean burning (e.g., Motul 800 2T Factory Line). Known Issues Power Valve Sticking: Carbon buildup can cause power valves to seize or operate incorrectly, leading to poor performance. Requires regular cleaning. 2-Stroke Carburetion Issues: Mikuni carburetors can be sensitive to jetting and require precise setup. Plugged jets or incorrect settings are common. Clutch Wear: Aggressive riding can lead to premature clutch wear. Regular inspection and...