🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 1999 Generation Generation Identifier: MK II / RG250 Gamma based Codes Chassis Code: AP08 👋 Introduction Market Position Bike Category: Lightweight Sportbike Target Audience: Enthusiast owners, independent mechanics, racing teams Competitive Analysis Competitors 1999: Yamaha YZF-R6, Suzuki GSX-R600, Kawasaki Ninja ZX-6R, Honda CBR600F Key Features Bike Philosophy: Race-bred performance, lightweight chassis, potent 2-stroke power delivery Manual Advantage: Provides in-depth technical data for maintenance and repair that often exceeds standard owner's manuals. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Page Count Estimated Pages: 300+ Manual Type Type: Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: 2-stroke V-twin, Cooling System, Lubrication System, Ignition System, Carburetion System, Exhaust System Transmission: 6-speed Sequential Gearbox, Clutch System, Drive Chain Chassis: Frame, Swingarm, Suspension (Front & Rear), Steering System, Wheels, Tires Brakes: Front & Rear Disc Brakes, Hydraulic System, Caliper Maintenance Electrical: Wiring Harness, Lighting System, Battery, Charging System (Stator/Regulator), Starter Motor, Instruments, ECU Bodywork: Fairings, Seat, Fuel Tank, Body Panels, Seat Removal Procedures Included Routine Maintenance: Oil Changes, Filter Replacements, Chain Adjustment, Spark Plug Service, Coolant Flush Engine Rebuild: Top-end Overhaul, Bottom-end Rebuild, Crankshaft & Piston Replacement, Cylinder Boring/Honing Transmission Service: Gearbox Disassembly/Reassembly, Clutch Plate Replacement, Shift Drum & Fork Alignment Suspension Overhaul: Fork Seal Replacement, Shock Absorber Rebuilding, Linkage Maintenance Electrical Diagnostics: Wiring Diagram Interpretation, Fault Finding, Component Testing, CDI Unit Diagnosis Carburetor Tuning: Jetting Adjustments, Synchronization, Idle Speed Control Troubleshooting: Common Problems, Diagnostic Flowcharts, Symptom-based Repair Guides Technical Depth Depth: Comprehensive: From basic checks and adjustments to full engine and transmission rebuilds, including detailed electrical system diagnostics. 📊 Manual Specifications File Format File Type: PDF Print Quality Image Resolution: High-resolution scans for clear diagrams and text Binding Type Binding: N/A (Digital) Paper Type Paper: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 70-degree V-twin, 2-stroke Displacement: 249 cc Bore X Stroke: 54.0 mm x 54.5 mm Compression Ratio: 7.5:1 Valvetrain: Reed Valve Intake, Rotary Disc Valve (on crankshaft) Power Delivery System: Suzuki's Automatic Exhaust Power VALVE System (SAEC) Performance Horsepower: Approx. 70 hp @ 11,000 rpm (claimed) Torque: Approx. 30 lb-ft @ 10,000 rpm (claimed) Fuel System Carburetion: Twin 32mm Mikuni TMR Flat-slide Carburetors Fuel Type: Premium Unleaded Gasoline (95 RON / 91 AKI) Fuel Tank Capacity: 16 Liters (4.2 US gal) Lubrication System Oil Type: 2-Stroke Premix or Autolube Injection System Autolube Oil Spec: API-TC, JASO FD Certified Synthetic 2-Stroke Oil 🔧 Transmission Standard Gearbox Type: 6-speed Constant Mesh, Sequential Features Clutch Type: Wet, Multi-plate Final Drive: O-ring Sealed Chain 📐 Dimensions Exterior Length: Approx. 1970 mm (77.6 in) Width: Approx. 720 mm (28.3 in) Height: Approx. 1120 mm (44.1 in) Wheelbase: Approx. 1365 mm (53.7 in) Weights Dry Weight: Approx. 142 kg (313 lbs) Wet Weight: Approx. 163 kg (359 lbs) 🛡️ Safety Features Ratings Frame Type: Aluminum Twin-Spar (Gull-wing style) Active Features Front Suspension: Inverted Telescopic Forks (Showa, 41mm stanchions), Adjustable Preload, Compression, and Rebound Damping Rear Suspension: Monoshock (Showa), Linkage-Type, Adjustable Preload, Compression, and Rebound Damping Front Brakes: Dual 320mm Discs with 4-piston Nissin Calipers Rear Brakes: Single 220mm Disc with 2-piston Nissin Caliper Tires Front: 120/70ZR17 Tires Rear: 160/60ZR17 💡 Technology Features Infotainment Instrumentation: Analog Tachometer, Speedometer, Temperature Gauge, Odometer, Trip Meter, Neutral Indicator, Turn Signal Indicators, High Beam Indicator Driver Assistance Electronic Aids: None (pure analog sportbike) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km (1,800-3,100 miles) or annually Spark Plug Replacement: Every 6,000-8,000 km (3,700-5,000 miles) Chain Lubrication Adjustment: Every 500-1000 km (300-600 miles) and after washing/wet riding Coolant Flush: Every 2 years Fluid Specifications Engine Oil Type: Fully synthetic 2-stroke oil, API-TC, JASO FD Transmission Oil Type: API GL-4 SAE 75W/90 or SAE 10W/40 Gear Oil Coolant Type: Ethylene Glycol-based Anti-freeze/Coolant (50/50 mix with distilled water) Brake Fluid Type: DOT 4 Known Issues Common Wear Item: Crankshaft Seals, Exhaust Power Valves (carbon buildup), Clutch Plates, Wheel Bearings Electrical Gremlins: Wiring loom degradation, CDI unit failure, regulator/rectifier issues Performance Tuning Challenges: Sensitivity to jetting changes, specific exhaust requirements 📚 Vehicle History Brand Heritage Manufacturer: Aprilia S.p.A. Brand Focus: High-performance motorcycles, especially in racing disciplines Model Evolution Predecessor: RS250 (MK I) Engine Origin: Derivative of Suzuki RG250 Gamma engine Production Production Period: 1995 - 2003 Key Manufacturing Location: Noale, Italy 🏆 Awards & Recognition Recognitions Bike Reputation: Highly regarded for its sharp handling, potent 2-stroke engine, and aggressive styling. A cult classic. Ratings Performance Rating: Excellent performance for its displacement class, especially in acceleration and cornering.