🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 2005 Product Name: Aprilia RS 125 2005 All Service Repair Manual Download 👋 Introduction Market Position Market Segment: Lightweight sportbike, popular among younger riders and track day enthusiasts for its performance and handling. Competitive Analysis Competitors: Competed directly with models like the Yamaha YZF-R125 (though R125 came later, its spiritual predecessor was the TZR series), Honda CBR125R, and Cagiva Mito 125. Key Features Features: Aggressive styling inspired by larger Aprilia RSV Mille sportbikes, potent 2-stroke engine delivering exciting performance, capable chassis and suspension for sporty riding. Target Audience Audience: DIY enthusiasts, motorcycle mechanics, owners seeking to maintain or restore their Aprilia RS 125. 📋 Manual Details Coverage Areas Coverage: Comprehensive service and repair for Aprilia RS 125 2005 model year. Page Count Page Count: Estimated 300+ pages (typical for comprehensive service manuals of this era). Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: Detailed coverage of the Rotax 123cc 2-stroke engine, including top-end rebuild, bottom-end procedures, cooling system, lubrication, and fuel delivery. Transmission: Complete coverage of the 6-speed sequential gearbox, clutch system, and shifting mechanism. Brakes: Front and rear brake system maintenance, including caliper overhauls, bleeding procedures, and pad replacement for both hydraulic and disc systems. Electrical: Comprehensive wiring diagrams, troubleshooting for ignition, lighting, charging system (stator, rectifier/regulator), starter motor, and battery. Chassis: Suspension (forks and rear shock), steering head bearings, wheel bearings, and frame inspection. Fuel System: Carburetor (likely Dell'Orto PHBH or similar) dismantling, cleaning, tuning, and fuel tank/lines. Cooling System: Radiator, hoses, water pump, and coolant specifications and replacement procedures. Exhaust System: Inspection and maintenance of the expansion chamber and silencer. Procedures Included Routine Maintenance: Oil changes, spark plug replacement, air filter cleaning/replacement, chain adjustment and lubrication, brake adjustments, tire pressure checks. Troubleshooting: Step-by-step diagnostic procedures for common performance issues, starting problems, and electrical faults. Engine Rebuild: Detailed instructions for piston, piston ring, cylinder, and crankshaft replacement, including torque specifications and critical clearances. Transmission Service: Gearbox disassembly, inspection of gears and dog teeth, seal replacement, and reassembly. Suspension Overhaul: Fork seal replacement, oil level and type specifications, rear shock absorber maintenance. Electrical Diagnostics: Fault finding using wiring diagrams, testing components like ignition coils, CDI units, and sensors. Bodywork Repair: Fairing removal and installation, minor body panel repairs, sticker and decal placement. Technical Depth Depth: Expert level, covering everything from basic owner maintenance to complete engine and transmission rebuilds, and advanced electrical troubleshooting. 📊 Manual Specifications File Format File Format: PDF Searchability: Text-searchable for quick access to specific information. Print Quality Print Quality: High-resolution scans, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, 2-stroke, single-cylinder Displacement: 124.8 cc (7.6 cu in) Bore X Stroke: 54.0 mm x 54.5 mm (2.13 in x 2.15 in) Compression Ratio: 8.6:1 (typical for this engine) Power Output: Approximately 30-34 hp (at crank, depending on region/tuning) Torque Output: Approximately 20-22 Nm (15-16 lb-ft) Performance Top Speed: Estimated 150-160 km/h (93-99 mph) Fuel System Carburetor: Dell'Orto PHBH 28 (or similar model, e.g., PHBH 30 for later models) Fuel Type: Unleaded gasoline, minimum 95 RON (octane rating) Fuel Delivery: Oil injection system (separate oil tank for 2-stroke oil). Lubrication Engine Oil: High-quality 2-stroke synthetic oil specifically for high-performance racing or sportbikes. Refer to manual for specific API/JASO ratings. 🔧 Transmission Standard Transmission Type: 6-speed sequential manual gearbox Clutch Type: Wet, multi-plate clutch, cable-operated Features Gear Ratios: Specific gear ratios will be detailed in the manual, crucial for performance tuning. Final Drive: Chain drive (specific sprocket sizes will be listed in manual). 📐 Dimensions Exterior Length: Approx. 1950 mm (76.8 in) Width: Approx. 700 mm (27.6 in) Height: Approx. 1070 mm (42.1 in) Wheelbase: Approx. 1360 mm (53.5 in) Weights Dry Weight: Approx. 130 kg (286 lbs) Wet Weight: Approx. 145 kg (320 lbs) (estimated with fluids) Fuel Capacity: Approx. 14 liters (3.7 US gal) Oil Capacity: Approx. 1.5 liters (for 2-stroke oil reservoir) 🛡️ Safety Features Ratings Crash Safety: Not applicable (motorcycle, typically not crash-tested like cars). Active Features Braking System: Front: Single disc brake (typically 320mm) with 4-piston caliper. Rear: Single disc brake (typically 220mm) with 2-piston caliper. Tires Front: 110/70-17 (common sizing) Tires Rear: 150/60-17 (common sizing) Passive Features Lighting: Halogen headlight, LED or incandescent taillight and turn signals. 💡 Technology Features Infotainment Dashboard: Analog tachometer, speedometer, odometer, trip meter, and indicator lights. No advanced digital infotainment features typical of modern motorcycles. Driver Assistance ABS: Not equipped with ABS. Connectivity Connectivity: No electronic connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval: Check 2-stroke oil reservoir level regularly; oil filter on the oil pump intake may require...