🏷️ Basic Information Identification Make: Aprilia Model: RS125 Year: 2006 onwards Codes Engine Code: Rotax 123 👋 Introduction Market Position Positioning: The Aprilia RS125 is a highly regarded 125cc sportbike known for its race-derived styling and performance, often considered a premium offering in its class. This manual caters to owners and technicians seeking professional-level service information. Competitive Analysis Competitors: Competes with other 125cc two-stroke sportbikes of its era, such as the Yamaha YZF-R125, Honda CBR125R, and Cagiva Mito. The RS125 often stood out due to its aggressive styling and potent two-stroke engine. Key Features Manual Value Proposition: Provides dealership-level technical data, detailed step-by-step instructions, and professional diagrams, enabling comprehensive maintenance and repair capabilities equivalent to authorized Aprilia service centers. 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service and Repair Secondary Coverage: Diagnostics, Maintenance, Overhaul, Troubleshooting Page Count Estimated Pages: High (indicating comprehensive coverage, exact count not specified but implied to be extensive) Manual Type Type: Professional Workshop Service & Repair Manual Language Language: English (implied by typical professional workshop manual standards) Format Format: Downloadable Digital Format (likely PDF) 📖 Manual Coverage Systems Covered Engine: Complete engine teardown, assembly, tuning, performance, lubrication system, cooling system, fuel system (carburetion/injection depending on specific sub-model) Transmission: Gearbox operation, clutch assembly, shift mechanism, lubrication, overhaul procedures Chassis: Frame inspection and repair, suspension systems (front forks, rear shock absorber), steering system, wheel bearings Brakes: Hydraulic system, caliper overhaul, disc replacement, fluid bleeding, lever and pedal adjustments Electrical: Wiring diagrams, ignition system, lighting, charging system (stator, regulator/rectifier), battery, starter motor, switches, fuses Fuel System: Carburetor service and tuning (e.g., Dell'Orto PHBH 28/30), fuel lines, fuel tank maintenance Exhaust System: Component identification, servicing, removal and installation Cooling System: Radiator, fan, hoses, coolant specifications, thermostat operation Procedures Included Routine Maintenance: Oil changes, filter replacement, spark plug checks, chain adjustment, brake pad inspection Troubleshooting: Diagnostic flowcharts, common problems and solutions, fault finding techniques Engine Rebuild: Piston and cylinder replacement, crankshaft and connecting rod inspection, valve timing, decarbonization Suspension Setup: Fork oil change and seal replacement, shock absorber servicing, spring preload adjustment Electrical Diagnosis: Testing components, wiring checks, starter circuit troubleshooting Carburetor Tuning: Jetting recommendations, idle speed adjustment, mixture control Technical Depth Depth: Full workshop level: From basic maintenance to complete engine and chassis overhauls, including detailed diagnostic procedures and specifications. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) - commonly used for downloadable manuals Searchability: Text-searchable (typical for professional PDF manuals, allowing for quick information retrieval) Print Quality Printability: High-resolution images and text, suitable for printing individual pages or sections. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, two-stroke, liquid-cooled Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 123 based engines) Displacement: 124.8 cc Compression Ratio: Approximately 12.5:1 (varies slightly by sub-model) Power Output: Approximately 15 hp (limited to comply with A1 license regulations in many markets), but often tuned to higher figures (e.g., 30+ hp) for track use or off-road. Torque: Around 11 Nm (approximately 8.1 lb-ft) at 7,000 rpm (stock). Performance Top Speed: Approximately 115-120 km/h (71-75 mph) stock, higher when derestricted. Fuel System Carburetor: Dell'Orto PHBH 28/30 DD or similar (specific model depends on market and year) Fuel Type: Unleaded gasoline, minimum 95 RON recommended Fuel Mixture: Two-stroke oil pre-mixed or via automatic oil injection system (depending on specific model variant) Lubrication Oil Type: High-quality fully synthetic two-stroke engine oil 🔧 Transmission Standard Type: 6-speed constant mesh sequential gearbox Features Clutch: Wet multi-plate clutch, hydraulically operated Final Drive: Chain driven (e.g., 17/40 tooth sprockets typical) 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 700 mm (at handlebars) Height: Approx. 1060 mm (at seat) Wheelbase: Approx. 1370 mm Weights Dry Weight: Approx. 135-140 kg Kerb Weight: Approx. 150-155 kg (fully fueled) Load Capacity: Not typically specified for rider and passenger weight, generally designed for one rider. 🛡️ Safety Features Ratings Crash Test Data: N/A (Motorcycle safety is assessed differently than cars; focus is on handling and braking) Active Features Braking System: Front: Hydraulic disc brake, e.g., 320mm disc with 4-piston caliper. Rear: Hydraulic disc brake, e.g., 220mm disc with 2-piston caliper. Tires: Sportbike-oriented radial tires. Front: typically 110/70-17. Rear: typically 150/60-17. Passive Features Frame: Aluminum alloy perimeter frame (derived from Aprilia's racing technology) 💡 Technology Features Infotainment Features: N/A (Basic sportbike design focused on riding dynamics) Driver Assistance Features: N/A (No electronic rider aids like ABS or traction control typically fitted on this model). 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually, whichever comes first (engine oil for shared systems if applicable, or gearbox oil). Spark Plug Replacement: Check every 5,000 km, replace as needed (specific plug type and gap crucial, e.g., NGK BR9EG). Air Filter Cleaning: Inspect and clean every 5,000 km,...