🏷️ Basic Information Identification Make: Aprilia Model: RS250 Production Years Covered By Manual: 1994, 1995, 1996, 1997, 1998 Codes Engine Code Range: Rotax 122/123 derivative 👋 Introduction Market Position Vehicle Class: Lightweight, high-performance two-stroke sportbike Target Audience: Enthusiasts, DIY mechanics, performance riders Competitive Analysis Key Competitors: Yamaha YZF-R6, Suzuki RGV250, Kawasaki Ninja ZX-6R (early models) Key Features Engine Configuration: Liquid-cooled, 90-degree V-twin, two-stroke Performance Focus: High revving, potent powerband, excellent handling Design Inspiration: Suzuki RG500 Gamma Grand Prix racing heritage 📋 Manual Details Coverage Areas Primary Focus: Service, Repair, Maintenance, Troubleshooting Scope: Complete workshop manual Page Count Estimated Page Count: 300+ Manual Type Type: Workshop Service and Repair Manual Language Language: English Format Format: Digital (PDF likely, given preview mention) 📖 Manual Coverage Systems Covered Engine Mechanical: Full engine disassembly, assembly, tuning, and diagnostics Fuel System: Carburetor tuning (Mikuni VM26SS), fuel pump, fuel lines Ignition System: CDI ignition, spark plugs, wiring diagrams Cooling System: Radiator, fan, coolant flow, water pump Exhaust System: Expansion chambers, mufflers, potential power valve system details Transmission Drivetrain: Gearbox disassembly, clutch operation, chain drive maintenance Brakes: Front and rear brake system overhaul (calipers, master cylinders, lines, pads, discs) Suspension: Front fork (showa or similar) and rear shock absorber servicing, adjustments, and specifications Electrical System: Wiring diagrams, lighting, charging system, starter motor, battery Chassis Frame: Frame inspection, steering head bearing service, wheel bearings Bodywork Fairings: Fairing removal, installation, and component identification Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, spark plug checks Scheduled Maintenance: 1000km, 5000km, 10000km service intervals and tasks Engine Rebuild: Top-end and bottom-end engine rebuild procedures Carburetor Rebuild: Detailed instructions for Mikuni VM26SS carburetor servicing Troubleshooting: Diagnostic charts for common problems and their solutions Suspension Adjustment: Settings for front and rear suspension components Brake Bleeding: Correct procedures for hydraulic brake bleeding Electrical Diagnostics: Testing of electrical components and circuits Technical Depth Depth: Comprehensive, from basic checks to full engine and chassis overhaul 📊 Manual Specifications File Format Digital Format: PDF (Searchable text and high-resolution images likely) Print Quality Image Resolution: High resolution for clear illustrations and diagrams Binding Type Binding If Printed: Spiral-bound or perfect-bound (typical for workshop manuals) Paper Type Paper Quality If Printed: Durable, coated paper stock to withstand shop environment ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 90-degree V-twin, two-stroke Displacement: 249 cc (249.3 cc) Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: 7.3:1 (often quoted, actual effective may vary) Power Valve System: Suzuki ATAC (Automatic Torque Amplification Chamber) or similar, enhancing low-end torque Performance Horsepower: Approx. 64.5 hp @ 11,000 rpm (JDM/European spec) Torque: Approx. 42.3 Nm (31.2 lb-ft) @ 10,500 rpm Fuel System Carburetors: Dual Mikuni VM26SS, flat-slide Fuel Delivery: Premixed fuel/oil or separate oil injection system Ignition Ignition Type: Digital CDI with dual spark plugs per cylinder 🔧 Transmission Standard Transmission Type: 6-speed constant mesh, cassette-type gearbox Features Clutch Type: Wet, multi-plate, cable-actuated Gear Ratios: Specific ratios available in manual (e.g., 1st: 2.538, 2nd: 1.875, 3rd: 1.500, 4th: 1.240, 5th: 1.090, 6th: 0.916) Final Drive: 525 O-ring chain, 16T front sprocket, 43T rear sprocket (typical) 📐 Dimensions Exterior Length: Approx. 2000 mm (78.7 in) Width: Approx. 710 mm (28.0 in) Height: Approx. 1135 mm (44.7 in) Wheelbase: Approx. 1385 mm (54.5 in) Weights Dry Weight: Approx. 140 kg (309 lbs) Wet Weight: Approx. 154 kg (340 lbs) Fuel Tank Capacity: 16 liters (4.2 US gallons) 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable to motorcycles in the same way as cars Active Features Braking System Type: Dual 320mm front discs with 4-piston calipers, single 240mm rear disc with 2-piston caliper ABS: Not equipped on this model Passive Features Lighting: Halogen headlight, LED taillight (likely) 💡 Technology Features Infotainment Instrumentation: Analog tachometer, speedometer, odometer, trip meters, coolant temperature gauge, warning lights Driver Assistance Rider Aids: None (ABS not available, no traction control) 🔧 Maintenance Service Intervals Oil Change Interval: Every 2,000-3,000 km (check manual for specifics) Spark Plug Replacement: Every 5,000-7,000 km (NGK CR9E or similar recommended) Chain Lubrication Adjustment: Every 500 km or after washing/rain Major Overhaul Recommendation: Every 20,000-30,000 km, depending on riding style and maintenance Fluid Specifications Engine Oil Type: High-quality 2-stroke pre-mix oil (if oil injection system is bypassed or for premix use). For gearbox: SAE 75W/90 synthetic gear oil. Coolant Type: Ethylene glycol-based antifreeze mixture (50/50 with distilled water) Brake Fluid Type: DOT 4 or DOT 5.1 (check manual for exact specification) Known Issues Common Wear Items: Piston rings, clutch plates, crankshaft seals, power valve mechanisms, carburetor jets/needles Potential Problems: Overheating (if cooling system is neglected), electrical gremlins (aged wiring), power valve sticking, worn crank bearings 📚 Vehicle History Brand Heritage Aprilia Background: Italian manufacturer with strong racing pedigree, particularly in smaller displacement classes Model Evolution Rs250 Development: Based on Suzuki RGV250 VJ22 platform, utilizing Suzuki's engine and...