🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Applicable Model Years: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Codes Engine Code General: Rotax 122 (specific variants may exist) 👋 Introduction Market Position Segment: Lightweight sport motorcycle, performance-oriented learner-legal machine. Competitive Analysis Key Competitors: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125, Kawasaki Ninja 125. Key Features Design Philosophy: Aggressive styling inspired by larger Aprilia sportbikes, capable handling, potent two-stroke engine performance for its class. Performance Orientation: Designed for riders seeking sporty performance and engaging riding dynamics in a 125cc package. 📋 Manual Details Coverage Areas Language: English Manual Type: Complete Workshop Service Repair Manual Page Count Estimated Page Count: Varies by edition, typically 300-500+ pages Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine disassembly, assembly, inspection, and overhaul of top-end (cylinder, piston, head) and bottom-end (crankshaft, connecting rod, bearings). Fuel System: Carburetor (Dell'Orto PHBH 28/AS or similar) adjustment, cleaning, rebuilding, and troubleshooting; fuel tank, fuel lines, and fuel pump (if applicable). Ignition System: CDI ignition system, stator, coil, spark plug, wiring diagrams, and troubleshooting. Cooling System: Radiator, fan, water pump, hoses, thermostat, coolant specifications, and bleeding procedures. Exhaust System: Exhaust pipe, silencer, catalytic converter (if equipped), gasket replacement, and torque specifications. Transmission: Six-speed gearbox, clutch operation and adjustment (cable-actuated), gearbox disassembly and assembly, lubrication, and troubleshooting. Suspension Front: Telescopic front forks (e.g., Marzocchi or Paioli), oil change, seal replacement, spring inspection, and adjustment. Suspension Rear: Monoshock rear suspension, linkage inspection, shock absorber adjustment, and rear swingarm bearing service. Brakes Front: Hydraulic disc brake system, caliper service, brake pad replacement, brake fluid flush and replacement (DOT 4), master cylinder overhaul, and bleeding procedures. Brakes Rear: Hydraulic disc brake system, caliper service, brake pad replacement, brake fluid flush and replacement, master cylinder overhaul, and bleeding procedures. Wheels Tires: Wheel bearing inspection and replacement, tire mounting and balancing, recommended tire pressures, and wheel specifications. Electrical System: Battery maintenance and testing, charging system (alternator, rectifier/regulator), starter motor, lighting (headlight, taillight, indicators), horn, and complete wiring diagrams. Chassis Frame: Frame inspection, steering head bearing service, and tightening torque specifications for various chassis components. Bodywork: Fairing removal and installation, seat, fuel tank, and body panel maintenance. Procedures Included Routine Maintenance: Oil changes, filter replacement, spark plug checks, chain adjustment and lubrication, brake fluid checks, coolant level checks, and general inspections. Troubleshooting: Systematic diagnostic procedures for common and uncommon issues across all major vehicle systems. Component Rebuild: Detailed instructions for the complete overhaul of the engine, gearbox, carburetors, and brake systems. Diagnostic Charts: Flowcharts and tables to identify causes of problems based on symptoms. Wiring Diagrams: Comprehensive electrical schematics for all models and variations covered. Torque Specifications: Precise torque values for all critical fasteners throughout the motorcycle. Technical Depth Depth Of Coverage: Comprehensive; covers everything from basic maintenance and adjustments to full engine rebuilds, complex electrical diagnostics, and chassis overhauls. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content for quick information retrieval. Print Quality Image Resolution: High-resolution images and diagrams for clarity. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, two-stroke, single-cylinder Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Valve Train: Reed valve intake, Rotary Disc Valve (RDV) induction system. Compression Ratio: Approx. 12.0:1 (varies slightly by year/variant) Cylinder Material: Aluminum alloy with Nikasil coating Performance Horsepower Max: Typically 15 kW (20.4 hp) at 9,000 rpm (regulated for A1 license, can be higher in unrestricted versions). Torque Max: Approx. 17 Nm (12.5 lb-ft) at 8,000 rpm (varies). Fuel System Carburetor Model: Dell'Orto PHBH 28/AS or similar. Fuel Delivery: Carburetor with oil injection (separate mixing). Fuel Type: Unleaded gasoline (min. 95 RON recommended) Oil System Oil Type: Two-stroke engine oil, JASO FD or ISO-L-EGD certified. 🔧 Transmission Standard Transmission Type: Constant mesh, 6-speed Clutch Type: Wet multi-plate, cable-actuated Final Drive: Chain drive Features Gear Ratios: Specific ratios detailed in manual (e.g., 1st: 2.615, 2nd: 1.765, 3rd: 1.333, 4th: 1.130, 5th: 0.957, 6th: 0.857). Gearbox Oil Type: SAE 80W/90 API GL-4 or GL-5 gear oil. 📐 Dimensions Exterior Length: Approx. 1950 mm (76.8 in) Width: Approx. 740 mm (29.1 in) at handlebars Height: Approx. 1100 mm (43.3 in) at seat Wheelbase: Approx. 1360 mm (53.5 in) Weights Dry Weight: Approx. 140 kg (309 lbs) Gross Vehicle Weight: Not specified, refer to local regulations. Fuel Tank Capacity: Approx. 13 Liters (3.4 US gal) 🛡️ Safety Features Ratings Safety Standards: Compliant with European and international motorcycle safety standards relevant to its class. Active Features Braking System: Dual disc brakes with dual piston calipers (front) and single piston caliper (rear) for effective stopping power. Passive Features Lighting: Halogen headlight, LED taillight and brake light for visibility. Ergonomics: Sportbike riding position designed for rider control...