🏷️ Basic Information Identification Make: Aprilia Model: RS 125 / Tuono 125 (Rotax Engine 122) Engine Family: Rotax 122 Engine Code: Rotax 122 Generation Typical Production Years: Mid-1990s to Early 2010s (varies by specific model variant) Codes Engine Type Designator: Rotax 122 - Single-cylinder, 2-stroke 👋 Introduction Market Position Target Audience: Aprilia RS 125 and Tuono 125 owners and independent workshops performing engine maintenance and repair Value Proposition: Provides factory-level repair and maintenance information for the critical Rotax 122 engine, enabling cost-effective and accurate servicing. Competitive Analysis Vs Generic Manuals: Superior to generic repair guides due to factory-specific procedures, detailed diagrams, and multi-language support. Key Features Visual Aid Count: Hundreds of photos Diagrams Included: Ignition wiring diagram, other system diagrams Language Advantage: Multi-language support enhances accessibility for a broader user base. 📋 Manual Details Coverage Areas Primary Coverage: Engine Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Reassembly Page Count Estimated Pages: N/A (provided product information does not specify page count) Manual Type Type: Factory Service Repair Manual Language Languages Included: English, German, Italian Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Cylinder, Piston, Crankshaft, Connecting Rod, Bearings, Seals, Gaskets Fuel System: Carburetor (e.g., Dell'Orto PHBH series), Fuel Pump, Fuel Lines Ignition System: Ignition Coil, CDI Unit, Spark Plug, Wiring Harness, Pickup Coil Cooling System: Radiator, Water Pump, Thermostat, Coolant Hoses Exhaust System: Expansion Chamber, Silencer (detailed inspection and repair recommendations) Lubrication System: Oil Injection System (if applicable), Pre-mix recommendations Procedures Included Disassembly Reassembly: Complete engine disassembly and reassembly procedures Maintenance Tasks: Scheduled maintenance, fluid changes, filter replacements, spark plug checks Troubleshooting: Diagnosis of common engine problems, performance issues, starting difficulties Repair Techniques: Engine component repair, seal replacement, gasket renewal, carburetor tuning Special Tooling: Identification and usage of specialized tools for engine work Technical Depth Level Of Detail: Comprehensive - covering all aspects from basic checks to full engine rebuilds Diagnostic Information: Detailed fault finding charts and diagnostic procedures Performance Tuning: Information relevant to maintaining optimal engine performance and basic tuning advice 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable if created from digital sources or high-quality scans Print Quality Quality Descriptor: High Quality & Fully Printable Image Resolution: High resolution for clear display of photos and diagrams Binding Type Digital Binding: N/A (Digital PDF) Paper Type Digital Paper Simulation: Designed for excellent readability on screen and on paper when printed ⚙️ Engine Specifications Primary Engine Engine Type: Rotax 122 Configuration: Single-cylinder, 2-stroke Bore: 54 mm Stroke: 54.5 mm Displacement: 124.8 cc Cooling: Liquid-cooled Reed Valve System: Yes Performance Horsepower Range: Approximately 30-35 HP (varies by model year and market restrictions) Torque Range: Approximately 21-24 Nm (varies by model year) Fuel System Carburetor Type: Dell'Orto PHBH 28 (common, but variations exist) Fuel Type: Unleaded gasoline with 2-stroke oil mixture (or oil injection system) Oil Type Recommendation: High-quality 2-stroke synthetic oil meeting JASO FD or API TC specifications (specific grades may be detailed in manual) 🔧 Transmission Standard Type: 6-speed constant mesh gearbox Optional Variations: N/A (standard configuration for the engine) Features Clutch Type: Wet multi-plate clutch Gear Ratios: Specific gear ratios are detailed within the manual for different model variants. Transmission Oil Type: Specific gearbox oil is typically required; manual will specify grade and capacity (e.g., SAE 75W/90 or similar). 📐 Dimensions Exterior Model Dependency: Dimensions vary significantly between Aprilia RS 125 and Tuono 125 models and their respective generations. Interior Engine Compartment: Manual focuses on engine internal dimensions and tolerances. Cargo Vehicle Cargo: N/A (Engine Manual) Weights Engine Weight: Not typically specified as a standalone figure in this type of manual, but assembly/disassembly requires managing component weights. 🛡️ Safety Features Ratings Vehicle Safety Ratings: N/A (Engine Manual, does not cover vehicle crash safety). Active Features Engine Performance Safety: Information on maintaining engine performance which contributes to overall vehicle safety. Passive Features Engine Component Integrity: Focus on proper assembly and torque specifications to ensure component integrity and prevent failure. 💡 Technology Features Infotainment Vehicle Infotainment: N/A (Engine Manual, does not cover vehicle electronics/infotainment). Driver Assistance Engine Management Tech: Includes details on the electronic ignition system (CDI) and its components. Connectivity Vehicle Connectivity: N/A (Engine Manual). 🔧 Maintenance Service Intervals Spark Plug: Typically every 5,000-10,000 km, or as per manual recommendations based on plug type. Air Filter: Regular inspection and cleaning/replacement, often every 5,000-10,000 km. Coolant: Flush and replace coolant every 2 years or as specified by Aprilia. Top End Rebuild: Recommended depending on usage and prior maintenance, typically every 15,000-25,000 km for significant performance restoration. Fluid Specifications Engine Oil Mix Ratio: Typically 1:20 or 1:25 (oil:fuel) if pre-mixing, or as per oil injection system calibration. Coolant Type: Ethylene glycol-based coolant (e.g., Motul Motocool Factory Line, Castrol Radicool SF) with appropriate water ratio. Known Issues Cylinder Wear: Common with high mileage 2-strokes, leading to loss of...