🏷️ Basic Information Identification Make: Aprilia Model: RS125 Year: 1999-2004 Vehicle Type: Sportbike Motorcycle 👋 Introduction Market Position Product Positioning: The definitive workshop manual for Aprilia RS125 owners and technicians seeking in-depth repair and maintenance information for the 1999-2004 model years. Essential for ensuring optimal performance and longevity of this iconic sportbike. Value Proposition Key Value: Provides all necessary service, repair, and assembly procedures, empowering users to perform maintenance and repairs effectively, saving time and money compared to dealership services. 📋 Manual Details Coverage Coverage Areas: Foreword, General Information, Routine Maintenance, Lubrication, Fuel System, Cooling System, Engine, Chassis, Electrical System, Troubleshooting Information Format Manual Type: Workshop Repair Manual Language: English File Format: PDF Availability Delivery Method: Instant Download Shipping: No Shipping Cost 📖 Manual Coverage Systems Systems Covered: Engine (all internal components, top-end, bottom-end), Fuel System (carburetor, fuel lines, pump), Cooling System (radiator, coolant flow, thermostat), Lubrication System (oil pump, lubrication points), Chassis (frame, suspension front/rear, steering), Electrical System (ignition, lighting, charging, wiring diagrams), Brakes (hydraulic systems, caliper service), Wheels and Tires, Exhaust System Procedures Procedures Included: Disassembly, Assembly, Reassembly, Inspection, Adjustment, Maintenance, Troubleshooting, Component Replacement, Routine Servicing, Overhaul Procedures Depth Technical Depth: Comprehensive workshop level, covering everything from routine maintenance and adjustments to complete engine rebuilds and advanced troubleshooting. Includes detailed procedures for all major mechanical and electrical systems. 📊 Manual Specifications File Attributes File Quality: High Quality PDF Print Attributes Printability: All pages are printable Compatibility Software Requirements: Adobe PDF Reader Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Performance Typical Horsepower: Approximately 30-34 hp (depending on market restrictions and tuning) Typical Torque: Approximately 20-22 Nm Fuel System Carburetor Type: Dell'Orto PHBH 28 (or similar, depending on specific market) Fuel Delivery: Gravity feed via fuel petcock Ignition Ignition System: Electronic ignition with variable ignition timing Lubrication Premix Or Autolube: Autolube (separate oil injection system) Engine Codes Engine Codes Covered: Covers common engine variants and designations for the RS125 during these years, likely referencing Rotax 122 or similar variants. 🔧 Transmission Gearbox Transmission Type: 6-speed constant mesh sequential gearbox Clutch Clutch Type: Wet multi-plate clutch, cable operated Final Drive Final Drive Type: Chain drive Oil Spec Transmission Oil Type: Typically API GL-4 or GL-5, SAE 80W/90 gear oil (specific grade will be detailed in manual) 📐 Dimensions Weights Dry Weight: Approximately 140-145 kg (depending on model variant) Wet Weight: Approximately 155-160 kg (with all fluids) Fuel Capacity Fuel Tank Capacity: Approximately 11-13 liters (depending on model variant) Dimensions Wheelbase: Approximately 1370-1380 mm 🛡️ Safety Features Features Braking System: Hydraulic disc brakes front and rear. Often features Brembo components on higher specification models. Front Brake Spec: Single 320mm disc, 4-piston caliper (or similar, depending on year/market) Rear Brake Spec: Single 220mm disc, 2-piston caliper (or similar, depending on year/market) Tires Front: 110/70-17 (common size, manual will specify exact OEM fitment) Tires Rear: 140/70-17 or 150/60-17 (common sizes, manual will specify exact OEM fitment) 💡 Technology Features Instrumentation Dashboard Features: Analog tachometer, speedometer, coolant temperature gauge, odometer, trip meter, indicator lights (turn signals, neutral, oil level, high beam). Lighting Lighting Type: Halogen headlight, LED or incandescent taillight and turn signals. Chassis Technology Frame Construction: Aluminum alloy twin-spar frame for rigidity and light weight. Suspension Technology Front Suspension Type: Upside-down telescopic forks (e.g., Marzocchi or Paioli), often with adjustable preload and damping. Rear Suspension Type: Monoshock with adjustable preload and damping (e.g., Sachs or similar). 🔧 Maintenance Service Intervals Oil Change Interval: As per manual recommendation, typically tied to mileage or operating hours, especially for gearbox oil. Autolube oil replenishment is frequent. Spark Plug Replacement: Refer to manual for specific interval, but typically every 5,000-10,000 km for performance spark plugs. Air Filter Cleaning: Frequent checks and cleaning/replacement recommended, especially in dusty conditions. Fluid Specifications Coolant Type: Ethylene glycol-based coolant with corrosion inhibitors (specific mix ratio detailed in manual) Brake Fluid Type: DOT 4 or DOT 5.1 brake fluid (manual will specify) Autolube Oil Type: High-quality 2-stroke synthetic or semi-synthetic oil suitable for high-performance, liquid-cooled engines (e.g., Motul 710, Castrol TTS) Known Issues Common Wear Items: Clutch plates, piston rings, cylinder wear, exhaust power valve carbon buildup, vibration-related component wear. Electrical Gremlins: Corroded connections, regulator/rectifier failure, stator issues can occur with age and exposure. Maintenance Tips Carburetor Tuning: Proper jetting and carburetor synchronization are critical for optimal performance and engine longevity. Manual provides detailed guidance. Power Valve Service: Regular cleaning and inspection of the exhaust power valve mechanism is essential to prevent performance degradation and engine damage. 📚 Vehicle History Brand Heritage Brand Origin: Aprilia is an Italian motorcycle manufacturer founded in 1945, renowned for its sportbikes and racing heritage. Model Evolution Rs125 Significance: The RS125 has been a cornerstone of Aprilia's lightweight sportbike offering for decades, celebrated for its race-bred design,...