🏷️ Basic Information Identification Make: Aprilia Model: RS125 Production Years: 1999-2003 Segment: Lightweight Sportbike Codes Internal Project Code: Not Specified (Likely internal Aprilia designation) 👋 Introduction Market Position Positioning: Essential resource for owners and mechanics of the Aprilia RS125 (1999-2003) seeking to perform maintenance, repairs, and diagnostics. Competitive Analysis Value Proposition: Provides professional-level technical information at a fraction of the cost of dealership service, enabling significant savings on repair bills and enhancing vehicle longevity. Key Features Completeness: Encompasses all aspects of the vehicle's operation, maintenance, and repair, mirroring factory service documentation. Usability: Designed for ease of use, with step-by-step instructions and detailed visuals suitable for various skill levels. Accessibility: Instant digital download ensures immediate access for users worldwide. 📋 Manual Details Coverage Areas Primary Focus: Comprehensive Service and Repair Secondary Focus: Maintenance, Diagnostics, Troubleshooting Page Count Estimated Pages: Hundreds (Exact count not provided, but described as 'complete' and 'extensive') Manual Type Type: Service Repair Workshop Manual Comparison: Factory Shop Manual / CDROM Manual Language Language: English Format Format: PDF Delivery Method: Instant Download Accessibility: Zoom In/Out Enabled Requirements: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows (XP, Vista 32/64, ME, 98, NT, 2000) & Mac 📖 Manual Coverage Systems Covered Powertrain: Engine (Fuel System, Lubrication, Cooling, Combustion, Crankcase, Piston, Cylinder, Crankshaft, Transmission, Balancer), Gearbox, Clutch Chassis And Suspension: Front Wheel and Steering System, Rear Wheel System, Suspension, Frame, Chassis Brakes And Wheels: Braking System, Wheels & Tyres Electrical And Ignition: Electrical System, Alternator/Starter Clutch, Battery/Charging System, Ignition System, Electric Starter, Lights/Meters/Switches, Wiring Diagrams Bodywork And Exhaust: Fenders and Exhaust Pipe, Body & Fixtures, Frame/Body Panels/Exhaust System Fuel And Cooling: Engine Fuel System, Cooling System, Fuel Injection System (if applicable to model years) Procedures Included Routine Maintenance: Periodic Checks & Adjustments, General Maintenance, Lubrication Repair And Rebuild: Engine Removal and Installation, Cylinder Head/Valves, Crankcase/Piston/Cylinder, Crankshaft/Transmission/Balancer, Complete Engine Overhauls Diagnostics And Troubleshooting: Troubleshooting Section, Diagnostic Procedures Component Overhaul: Gearbox, Clutch, Braking System, Suspension Components, Electrical Components Technical Depth Depth: Professional Quality, Highly Detailed, Covers Simple to Complicated Repairs Effortlessly Illustration Quality: Highly Detailed Exploded Pictures & Diagrams Repair Guidance: Step-by-step Instruction, Covers Entire Vehicle from Front to Back Target User: Professional Mechanics, DIY Enthusiasts 📊 Manual Specifications File Format Type: PDF Searchability: Likely Searchable Text within PDF (standard for professional manuals) Print Quality Printability: All Pages Printable Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 2-Stroke, Single Cylinder (Rotax 122) Displacement: 125cc (approx. 124.8 cc) Bore X Stroke: 54 mm x 54.5 mm Cooling System: Liquid-Cooled Power Output Hp: Varies by market and tuning, typically 28-34 HP (20.6-25 kW) in restricted forms, and up to 30-33 HP (22-24 kW) in unrestricted forms. Performance figures are available within the manual. Torque Nm: Specific torque figures are detailed within the manual, typically around 20-23 Nm depending on configuration. Performance Top Speed: Estimated 140-150 km/h (87-93 mph), dependent on rider, conditions, and variant. Fuel System Fuel Delivery: Carburetor (Dell'Orto VHST 28 or similar), with potential for fuel injection on later models or specific market variants. Manual covers relevant systems. Carburetor Size: 28mm (typical) Ignition System Ignition Type: Electronic CDI (Capacitor Discharge Ignition) Lubrication System Type: Premix or Automatic Oil Injection (Autolube System) - manual details both. 🔧 Transmission Standard Type: 6-Speed Constant Mesh Features Clutch Type: Wet Multi-plate Clutch 📐 Dimensions Exterior Length: Approx. 1990 mm (78.3 in) Width: Approx. 730 mm (28.7 in) Height: Approx. 1135 mm (44.7 in) Wheelbase: Approx. 1360 mm (53.5 in) Weights Dry Weight: Approx. 130 kg (286.6 lbs) Wet Weight: Approx. 140-145 kg (308-320 lbs) - including fluids. Fuel Capacity: Approx. 12 Liters (3.17 US Gallons) 🛡️ Safety Features Ratings Safety Ratings: Not Applicable (Motorcycle segment) Active Features Braking System: Hydraulic Disc Brakes Front and Rear. Specific caliper and disc sizes detailed in manual. Suspension Type: Upside-down (USD) front forks, Monoshock rear suspension. Specific adjustment and maintenance covered. Passive Features Lighting: Halogen Headlight, LED Taillight (typical), Integrated Turn Signals. 💡 Technology Features Infotainment Infotainment System: N/A (Basic motorcycle instrumentation) Driver Assistance Assistance Features: N/A (No electronic rider aids beyond standard braking) Instrumentation Dash Features: Analog Tachometer, Digital Speedometer, Odometer, Trip Meter, Coolant Temperature Gauge, Fuel Warning Light. 🔧 Maintenance Service Intervals Oil Change: Detailed in manual, typically every 3,000-5,000 km or annually, depending on usage. Includes gearbox oil specifications. Spark Plug Replacement: Refer to manual for specific mileage intervals and recommended plug types (e.g., NGK BR9EG). Air Filter Cleaning: Recommended periodic checks and cleaning/replacement as per manual, especially under dusty conditions. Fluid Specifications Engine Oil: Specific 2-stroke oil type and premix ratio (if applicable) detailed in manual. For Autolube systems, specific 2T oil grades are recommended. Coolant: Ethylene glycol-based coolant with anti-corrosion additives. Manual will specify type and mixture ratio. Brake Fluid: DOT 4...