🏷️ Basic Information Identification Make: Aprilia Model: RS 125 / Tuono 125 (with Rotax 122 Engine) Engine: Rotax 122 Codes Engine Code: Rotax 122 Generation Production Years Covered: 1996 Onward 👋 Introduction Market Position Target Audience: Aprilia RS 125 and Tuono 125 owners, independent repair shops, enthusiasts. Competitive Analysis Value Proposition: Provides professional-level repair information at a fraction of dealer service costs. Key Features Accuracy Reliability: Information equivalent to that used by professional technicians. Visual Aids: High-quality photos, illustrations, and diagrams enhance understanding. Accessibility: Easy to use, no advanced computer skills required for printing and referencing. 📋 Manual Details Coverage Areas Manual Scope: Comprehensive repair and maintenance for Rotax 122 engine fitted in Aprilia motorcycles. Page Count Estimated Page Count: Extensive, detailed coverage (specific number not provided, described as 'complete'). Manual Type Manual Type: Digital Workshop Repair Manual Language Language: English (implied by product description) Format Digital Format: Digital Download (printable) 📖 Manual Coverage Systems Covered Engine Mechanical: Top End (Cylinder, Piston, Rings, Head), Bottom End (Crankcase, Crankshaft, Bearings, Conrod), Valve Train (if applicable, though Rotax 122 is typically 2-stroke), Lubrication System, Cooling System (if applicable), Intake System, Exhaust System. Fuel System: Carburetor (Dell'Orto PHBH/PHBL variants commonly used), Fuel Delivery, Fuel Pump (if applicable). Ignition System: Ignition Coil, CDI Unit, Spark Plug, Timing. Exhaust System: Expansion Chamber, Silencer, Lambda Sensor (if applicable to later models). Electrical System: Wiring Diagrams, Charging System (Stator, Regulator/Rectifier), Battery, Lighting System (relevant to engine operation). Cooling System: Radiator, thermostat, coolant hoses, water pump operation (for liquid-cooled variants). Procedures Included Disassembly Reassembly: Complete engine disassembly and reassembly procedures. Maintenance: Regular service, oil changes, filter replacement, spark plug checks, coolant flushes (if liquid-cooled). Troubleshooting: Diagnostic procedures for common engine faults and performance issues. Rebuilding: Engine rebuild procedures, including piston, ring, and bearing replacement. Part Replacement: Detailed instructions for replacing individual engine components. Carburetor Overhaul Rejetting: Detailed steps for disassembling, cleaning, inspecting, and re-jetting the carburetor. Technical Depth Diagnostic Capabilities: Advanced diagnostic procedures for identifying root causes of problems. Specification Details: Torque specifications, clearances, tolerances, and fluid capacities. Rebuild Level: Suitable for complete engine overhauls and restorations. Engine Timing Settings: Precise specifications for ignition timing and power valve timing. 📊 Manual Specifications File Format Digital File Type: Likely PDF or similar accessible digital format. Print Quality Printable Pages: Yes, user can print individual procedures or the entire manual. Binding Type Binding Type: Not Applicable (Digital Format) Paper Type Paper Type: Not Applicable (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, 2-stroke, liquid-cooled (typically). Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 122). Displacement: 124.8 cc. Compression Ratio: Typically around 12.5:1 to 13.5:1 (varies with model/year). Valvetrain: Mechanical exhaust power valve (EPV) system. Performance Horsepower: Approximately 30-34 HP (15kW restricted variants also exist). Torque: Approximately 20-22 Nm. Fuel System Carburetor Size: 34mm Dell'Orto PHBH or PHBL (common variants). Fuel Type: Unleaded gasoline (RON 95 or higher recommended). Lubrication Lubrication System: Pre-mix or separate oil injection system (specific to model/year). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh gearbox. Features Clutch Type: Wet, multi-plate clutch. Gear Ratios: Specific gear ratios would be detailed in the manual. Transmission Fluid: Specific SAE grade and specification for gearbox oil (e.g., SAE 75W/90 or specific motorcycle gearbox oil). 📐 Dimensions Exterior Wheelbase: Approx. 1375 mm (varies slightly by model). Weights Dry Weight: Approx. 130-140 kg (varies by model). 🛡️ Safety Features Active Features Braking System: Hydraulic disc brakes front and rear (specific caliper/rotor sizes would be in manual). 💡 Technology Features Infotainment Instrumentation: Analog tachometer, speedometer, odometer, temperature gauge (if equipped). 🔧 Maintenance Service Intervals Oil Change Interval: Detailed schedule for engine oil and gearbox oil changes (e.g., every 5,000-7,500 km or annually). Spark Plug Replacement: Recommended interval for spark plug inspection and replacement (e.g., 5,000-10,000 km). Top End Overhaul: Guidance on when to consider piston and ring replacement for optimal performance. Fluid Specifications Engine Oil Type: Specific recommendations for 2-stroke pre-mix oil or separate injection oil (e.g., JASO FD certified). Coolant Type: If liquid-cooled, specifications for ethylene glycol-based coolant mixture. Brake Fluid Type: DOT 4 hydraulic brake fluid. Known Issues Common Wear Items: Piston rings, small end bearing, crank seals, exhaust gasket, clutch plates. Carburetor Tuning: Sensitivity to altitude, temperature, and exhaust modifications requiring precise jetting and tuning. Power Valve Operation: Importance of keeping the exhaust power valve clean and functioning correctly for optimal power delivery. 📚 Vehicle History Brand Heritage Manufacturer Focus: Aprilia is renowned for its performance-oriented motorcycles, particularly in smaller displacement categories. Model Evolution Rotax Engine Legacy: The Rotax 122 engine is a proven and powerful unit for its class, used across various Aprilia models and generations, known for its lively performance. Production Manufacturing Origin: Italy 🏆 Awards & Recognition Recognitions Model Reputation: The RS 125, in its various iterations with the Rotax 122, has...