🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 2002 Codes Model Code: RS125-2002-SM 👋 Introduction Market Position Target Audience: Owners, mechanics, and enthusiasts of the Aprilia RS 125 (2002 model and potentially adjacent years). Competitive Analysis Utility: Provides the same level of detail and diagnostic information used by authorized dealership technicians. Key Features Coverage Statement: Comprehensive coverage extending to similar model years, reflecting the generational nature of motorcycle manufacturing. Download Assistance Download Recommendation: Use of download managers is suggested for large files to prevent timeouts. Support Customer Support: Direct contact available for download or technical issues, indicating long-term business support. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: PDF Page Count Page Count: 290 Search Features Search Capability: Bookmarked and searchable text 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, disassembly, assembly, lubrication, cooling, and tuning. Fuel System: Carburetor settings, fuel lines, fuel pump, fuel tank maintenance. Cooling System: Radiator, water pump, thermostat, coolant specifications and flushing procedures. Electrical System: Ignition system, battery, charging system, lighting, starter motor, wiring diagrams. Chassis: Frame, suspension (front and rear), steering, wheels, tires, and braking system. Troubleshooting: Diagnostic procedures for common issues, fault finding, and repair guidance. Procedures Included Maintenance: Routine maintenance checks, lubrication points, fluid changes, filter replacements. Repair: Detailed step-by-step instructions for component removal, repair, and reinstallation. Diagnostics: System-specific diagnostic trees and troubleshooting guides. Suspension Adjustment: Detailed instructions for adjusting front fork pre-load, compression, and rebound damping, as well as rear shock absorber settings. Carburetor Overhaul: Step-by-step guide for disassembling, cleaning, inspecting, and reassembling the Dell'Orto carburetor, including jet sizing and mixture screw adjustments. Ignition Timing: Procedures for checking and adjusting ignition timing (if applicable via CDI settings or specific components). Exhaust System: Maintenance and tuning of the expansion chamber exhaust, including cleaning and checking for leaks. Technical Depth Depth: Comprehensive, covering routine maintenance to major component overhauls, suitable for professional technicians and experienced DIY enthusiasts. Torque Specifications: All critical fasteners and components have specified torque values for proper assembly. Diagnostic Charts: Includes comprehensive charts for diagnosing electrical faults and engine performance issues. Component Diagrams: Detailed exploded view diagrams of all major assemblies for clarity during disassembly and reassembly. 📊 Manual Specifications File Format File Type: PDF Software Requirement: PDF Reader (e.g., Adobe Acrobat Reader) Compression: May be distributed as ZIP archives, requiring unzipping software (e.g., 7-Zip). Print Quality Printability: Designed for digital viewing; print quality depends on user's printer capabilities. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Cooling System: Liquid-cooled Induction: Reed valve induction with Dell'Orto carburetor (e.g., PHBH 28, VHST 28, or similar depending on specific market version). Performance Power Output: Approximately 15 kW (20.4 hp) at 10,500 rpm (often restricted in some markets, but the manual covers the full potential). Torque Output: Approximately 12.2 Nm (9 lb-ft) at 10,000 rpm. Fuel System Fuel Type: Unleaded gasoline (RON 95 or higher recommended). Fuel Mixture: Automatic oil injection system for two-stroke oil. Engine Components Spark Plug: NGK BR9EG or equivalent. Piston Ring Gap: Refer to manual for specific service limit (typically 0.2-0.4 mm). 🔧 Transmission Standard Transmission Type: 6-speed constant mesh, sequential manual. Features Clutch: Wet multi-plate clutch. Fluid Specifications Transmission Oil Type: SAE 10W/40 API GL-3 or GL-4 transmission oil. (Specific Aprilia recommendations should be cross-referenced). Gear Ratios 1St Gear: 27/12 (2.250) 2Nd Gear: 24/14 (1.714) 3Rd Gear: 23/15 (1.533) 4Th Gear: 22/16 (1.375) 5Th Gear: 21/17 (1.235) 6Th Gear: 19/18 (1.056) Final Drive Ratio: 16/42 (2.625) or similar, depending on market. 📐 Dimensions Exterior Length: Approximately 1,950 mm Width: Approximately 740 mm Height: Approximately 1,100 mm Weights Dry Weight: Approximately 132 kg Wet Weight: Approximately 147 kg (with all fluids) Wheels Tires Front Tire Size: 110/70-17 Rear Tire Size: 150/60-17 Wheel Type: Alloy 🛡️ Safety Features Active Features Braking System: Front: Hydraulic disc brake, 320 mm diameter. Rear: Hydraulic disc brake, 240 mm diameter. Brake Caliper: Front: 4-piston radial caliper. Rear: 2-piston caliper. Passive Features Lighting: Halogen headlight, LED taillight. Frame Construction: Aluminum perimeter frame. Suspension: Front: Upside-down telescopic forks (e.g., Marzocchi or Paioli), 40 mm stanchion diameter. Rear: Monoshock with adjustable preload and damping. 💡 Technology Features Infotainment Instrument Cluster: Analog tachometer, digital speedometer, odometer, trip meter, and warning lights. (No modern infotainment systems). Driver Assistance ABS: No Anti-lock Braking System (ABS) fitted to this model. Connectivity Connectivity Features: N/A (Basic mechanical and electrical systems). 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage (e.g., every 3,000-5,000 km for engine oil, though 2-stroke mix is automatic). Spark Plug Replacement: Refer to manual for specific mileage (e.g., every 6,000-10,000 km, depending on type and usage). Air Filter Cleaning: Recommended...