🏷️ Basic Information Identification Make: Aprilia Model: RS125 Engine: Rotax 122 Generation Production Years Covered: 1999-2003 👋 Introduction Market Position Target Audience: Owners of Aprilia RS125 models (1999-2003) seeking to perform maintenance, repairs, and restoration themselves to save costs. Competitive Analysis Value Proposition: Provides access to professional-level repair information, empowering users to avoid costly dealership or mechanic fees. Offers the convenience of instant download and on-demand printing. Key Features Features: Highly detailed, printable diagrams, step-by-step repair procedures, troubleshooting guides, and comprehensive technical data. Instant email delivery of download link. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Rebuild, Refurbish, Restoration Page Count Estimated Pages: Indeterminate (Digital Download, Printable) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine assembly, disassembly, tuning, carburetor adjustment, ignition system, cooling system, lubrication system, exhaust system, fuel delivery, starter system, power valve operation Chassis Systems: Frame, suspension (front forks, rear shock absorber), steering, wheels, brakes (front and rear calipers, master cylinders, lines), swingarm Electrical Systems: Wiring diagrams, lighting, battery, charging system, ignition, starter motor, instrumentation, sensors Bodywork And Fairings: Fairing removal and installation, seat, fuel tank, minor body repairs Procedures Included Maintenance Procedures: Routine checks, oil changes, filter replacements, spark plug replacement, chain adjustment, brake fluid flush, coolant flush Repair Procedures: Engine rebuild, transmission repair, carburetor overhaul, suspension fork rebuild, brake caliper service, electrical troubleshooting Diagnostic Procedures: Troubleshooting guides for common issues, identification of fault codes (if applicable to the era), performance diagnosis Technical Depth Depth Of Coverage: Comprehensive A-Z coverage, suitable for professional technicians and DIY enthusiasts. Includes detailed diagnostics, rebuild procedures, and component specifications. 📊 Manual Specifications File Format Compatibility: PC & MAC Computers, Adobe PDF Reader required Print Quality Printability: High-quality, printable pages for convenient use at the workbench. Binding Type Binding: Digital Download (No physical binding) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: 2-Stroke, Single Cylinder, Liquid-Cooled Bore X Stroke: 54 mm x 54.5 mm Displacement: 124.8 cc Compression Ratio: Approx. 11.5:1 to 12.5:1 (depending on specific variant/region) Performance Horsepower Peak: Approx. 30-34 hp (15 kW for restricted versions in some markets) Torque Peak: Approx. 20-22 Nm Fuel System Carburetor: Dell'Orto VHST 28/30mm (common for this era, specific model may vary) Fuel Type: Unleaded gasoline (minimum 95 RON) Fuel Mixture: Premix (2-stroke oil mixed with gasoline) or separate oil injection system (depending on specific model variant) Lubrication Engine Oil Type: High-quality 2-stroke synthetic oil for racing applications (e.g., Motul 800, Castrol TTS) Ignition Ignition System: Electronic ignition (CDI) Cooling System Cooling Type: Liquid-cooled Coolant Type: Ethylene glycol based coolant with anti-corrosion additives (e.g., Motul Motocool Expert) Power Valve Power Valve System: Rotax "Power Jet" or 'APCS' (Aprilia Controlled Power System) exhaust port power valve. 🔧 Transmission Standard Transmission Type: 6-speed sequential manual gearbox Optional Optional Transmissions: N/A (Standard for RS125) Features Clutch Type: Wet, multi-plate clutch Final Drive: Chain drive Gear Ratios Gear Ratios: Specific ratios documented within the manual (e.g., 1st: 2.5, 2nd: 1.8, 3rd: 1.4, 4th: 1.14, 5th: 1, 6th: 0.86 - *example, actual ratios provided in manual*) Transmission Fluid Transmission Oil Type: Specific gearbox oil as per Aprilia recommendations (typically SAE 75W/90 or similar, but check manual for exact specification) 📐 Dimensions Exterior Length: Approx. 1940 mm Width: Approx. 750 mm Height: Approx. 1135 mm Wheelbase: Approx. 1360 mm Weights Dry Weight: Approx. 122 kg Wet Weight: Approx. 137 kg (fully fueled, ready to ride) Fuel Capacity Fuel Tank Capacity: Approx. 13 Liters (including a reserve) Wheels And Tires Front Tire Size: 110/70-17 Rear Tire Size: 150/60-17 Wheel Type: Alloy wheels Suspension Front Suspension Type: Telescopic front forks (upside-down or conventional depending on specific variant, e.g., Marzocchi or Showa) Rear Suspension Type: Monoshock swingarm with adjustable preload and rebound damping 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle safety is typically assessed via component performance and design, not crash ratings like cars) Active Features Braking System: Front: Single or dual hydraulic disc brake (e.g., 320mm disc with 4-piston caliper); Rear: Hydraulic disc brake (e.g., 220mm disc with 2-piston caliper). ABS was not a common feature on this model. Passive Features Lighting: Halogen headlight, LED taillight, turn signals. 💡 Technology Features Infotainment Infotainment System: N/A (Basic instrumentation: speedometer, tachometer, odometer, engine temperature warning light, neutral indicator, turn signal indicators) Driver Assistance Driver Assistance Features: N/A (No electronic driver assistance systems typically found on this model) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually (for gearbox oil, check manual for exact recommendation). 2-stroke oil level needs constant monitoring if not using automatic injection. Spark Plug Replacement: Every 5,000-8,000 km, depending on plug type and usage (check manual for specific recommendation). Chain Lubrication Adjustment: Every 500-1000 km, or more frequently in adverse conditions. Air Filter Cleaning Replacement:...