🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Variant: Sport Production (SP) Generation Generation Years: 2006-2013 👋 Introduction Market Position Market Segment: Lightweight sportbike, popular for entry-level riders, track days, and urban commuting due to its agile handling and sporty aesthetics. Competitive Analysis Competitors: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125 (though some later models may overlap), Kawasaki Ninja 125. Key Features Design Philosophy: Emphasizes aggressive styling, sporty ergonomics, and performance-oriented components typically found on larger Aprilia sportbikes. Target Audience: Enthusiasts seeking a capable 125cc motorcycle with a premium feel and performance that punches above its weight class, suitable for learning and intermediate riding. 📋 Manual Details Coverage Areas Engine Coverage: Comprehensive coverage of all engine components, including top-end, bottom-end, lubrication, cooling, and fuel/ignition systems. Transmission Coverage: Detailed procedures for clutch, gearbox, and final drive maintenance and repair. Chassis Coverage: Complete coverage of frame, suspension (front and rear), steering, and wheel components. Electrical System Coverage: In-depth information on wiring diagrams, lighting, ignition, charging system, and starter motor. Bodywork Coverage: Instructions for fairing removal/installation, seat, fuel tank, and minor body panel adjustments. Page Count Page Count Estimated: Refer to actual manual for exact count, typically 300-500+ pages for a comprehensive service manual. Manual Type Manual Type: Workshop Service & Repair Manual Language Language: English (primary, with potential for other languages depending on source) Format Format: Digital Download (PDF, potentially ePub or similar for device compatibility) 📖 Manual Coverage Systems Covered Engine Systems: 2-stroke Rotax 125cc engine (e.g., Rotax 122 E4, Rotax 123, depending on specific variant within the model years), including cylinder, piston, crankshaft, con-rod, reed valve assembly, carburetor tuning (Dell'Orto PHBH series), exhaust system analysis, and cooling system (liquid cooling). Fuel System: Carburetor identification, jetting specifications, float bowl adjustment, fuel delivery system, fuel filter, and fuel tank maintenance. Ignition System: CDI ignition system, spark plug selection and gap, ignition timing procedures, stator and coil testing. Transmission And Drivetrain: 6-speed sequential gearbox, clutch operation (wet multi-plate), clutch cable adjustment, gearbox oil type and capacity, chain and sprockets maintenance and replacement. Suspension And Steering: Front telescopic forks (e.g., Marzocchi or Paioli depending on specification), rear monoshock absorber, swingarm inspection, steering head bearing maintenance, fork oil type and level, rear shock absorber adjustment. Braking System: Front and rear disc brakes (e.g., Brembo components), brake fluid specifications (DOT 4), bleeding procedures, pad and disc wear inspection, caliper maintenance. Electrical System: Complete wiring diagrams, battery specifications (e.g., YTX7L-BS or similar), charging system (stator, rectifier/regulator), lighting circuits (headlight, taillight, indicators), instrument cluster functionality. Procedures Included Routine Maintenance: Oil changes, filter replacements (air and oil if applicable to variant), chain lubrication and adjustment, brake adjustments, tire pressure checks, spark plug replacement. Engine Rebuild: Top-end rebuild (piston, rings, cylinder), bottom-end rebuild (crankshaft, bearings, seals), valve clearance adjustment (if applicable to specific engine variant, though typically fixed on 2-strokes), decarbonization procedures. Troubleshooting: Diagnostic charts for common starting issues, running problems, electrical faults, and braking system irregularities. Component Replacement: Step-by-step guides for replacing major components such as clutch plates, gearbox parts, suspension components, brake calipers, and electrical parts. Assembly Disassembly: Detailed instructions for the removal and reinstallation of all major motorcycle systems and components. Technical Depth Depth Level: Comprehensive, covering everything from basic user maintenance to full engine and chassis overhauls. Includes torque specifications, clearances, and detailed diagnostic procedures. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format), optimized for digital viewing and printing. Searchable text functionality is typically included in high-quality digital manuals. Print Quality Print Quality: High-resolution digital reproduction of original factory service information. Ensures clarity of diagrams, illustrations, and text. Binding Type Binding Type: N/A (Digital Download - no physical binding) Paper Type Paper Type: N/A (Digital Download - no physical paper type) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, two-stroke, single-cylinder, reed-valve inducted Displacement: 124.2 cc (7.58 cu in) Bore X Stroke: 54 mm x 54.5 mm (2.13 in x 2.15 in) Compression Ratio: Typically around 8.4:1 to 12.0:1 depending on specific variant and tuning. Valvetrain: Reed valve induction Cooling System: Liquid-cooled Performance Horsepower: Approximately 15 hp (11 kW) at 8,000 rpm (limited for A1 license category in Europe), potentially higher in unrestricted race configurations. Torque: Approximately 12 Nm (8.9 lb-ft) at 7,000 rpm Fuel System Carburetor: Dell'Orto PHBH 28 (typically), sometimes PHVA 28 variants depending on emission regulations and model year. Fuel Type: Unleaded gasoline, minimum 95 RON recommended. Lubrication Oil System: Automatic oil injection for pre-mix lubrication, separate oil reservoir. 🔧 Transmission Standard Transmission Type: 6-speed manual sequential gearbox Clutch: Wet, multi-plate Final Drive: Chain drive Features Gear Ratios: Specific ratios vary, but typically offer a wide range for performance and usability. Gearbox Oil Type: API GL-4, SAE 75W/90 or 80W/90 gear oil. Specific Aprilia recommendation should be consulted in the manual. Gearbox Oil Capacity: Refer to manual for exact capacity,...