🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Designation: Rotax 122 Product Type: Service Repair Manual Generation Production Years Covered: 1993-2002 Codes Chassis Codes: RN, RP, RR, RS, RT, RU (varies by year and market) 👋 Introduction Market Position Segment: Lightweight Sportbike / Two-Stroke Performance Target Audience: Enthusiast owners, independent mechanics, aspiring racers Competitive Analysis Key Competitors Era: Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125 (though many were 4-stroke competitors, the RS125 stood out for its 2-stroke performance) Key Features Engine Type Distinction: High-performance 125cc two-stroke engine, renowned for its powerband and sound Chassis Design: Race-derived chassis, often featuring upside-down forks and performance suspension Popularity: Hugely popular as a track day bike and a gateway to motorcycle racing, particularly in European markets 📋 Manual Details Coverage Areas Engine: Complete overhaul, rebuild, troubleshooting, tuning Transmission: Clutch, gearbox, shifting mechanism, troubleshooting Electrical System: Wiring diagrams, ignition, lighting, charging system, starter, troubleshooting Chassis And Suspension: Frame, forks, rear shock absorber, swingarm, steering, wheel bearings Brakes: Front and rear brake systems, hydraulic components, troubleshooting Fuel System: Carburetor (Dell'Orto PHBH/PHVA variants), fuel lines, fuel pump (if applicable) Cooling System: Radiator, water pump, hoses, thermostat Exhaust System: Pipe, muffler, mounting, troubleshooting Bodywork And Fairings: Disassembly, reassembly, adjustments Routine Maintenance: Oil changes, filter replacement, chain adjustment, spark plug service Troubleshooting: Common problems and solutions for all major systems Page Count Estimated Pages: Hundreds (exact number not specified in product info, but implied by 'Hundreds Of Pages') Manual Type Type: Service Repair Manual Language Language: English (assumed based on typical manual releases for this market) Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Cylinder head, piston, connecting rod, crankshaft, seals, gaskets, timing (power valve) Fuel And Carburetion: Carburetor jetting, float levels, idle speed, mixture adjustments, fuel pump operation Ignition System: CDI unit, ignition coil, spark plug, timing adjustments, stator, pickup coil Cooling System: Coolant capacity, bleeding procedure, thermostat operation, fan switch (if applicable) Lubrication System: Oil pump, oil injection system, pre-mix recommendations Exhaust And Emissions: Two-stroke exhaust design, power valve system operation and maintenance Clutch And Transmission: Clutch plate replacement, spring specifications, gear inspection, shift drum and fork alignment Front Suspension: Fork oil type and level, seal replacement, spring preload adjustment, damping settings Rear Suspension: Shock absorber specifications, linkage maintenance, swingarm bearing service Braking System: Brake fluid type (DOT 4), bleeding procedures, caliper piston service, pad replacement, rotor specifications Electrical Diagnostics: Wiring diagrams for lighting, charging, ignition, starter, horn, turn signals Procedures Included Engine Rebuild: Complete engine disassembly, inspection, component replacement, and reassembly Carburetor Rebuild: Disassembly, cleaning, jet replacement, float adjustment, reassembly Fork Seal Replacement: Front fork disassembly, seal replacement, oil refill Clutch Replacement: Clutch plate and spring replacement Power Valve Maintenance: Cleaning, inspection, and adjustment of the exhaust power valve system Electrical Troubleshooting: Diagnosis of common electrical faults using wiring diagrams and test procedures Brake System Maintenance: Brake fluid flush and bleed, pad and rotor replacement Chain And Sprocket Replacement: Correct procedures for replacing drive chain and sprockets Technical Depth Depth Of Coverage: Comprehensive (from basic maintenance to full engine rebuilds and chassis overhauls) Diagnostic Capability: Detailed troubleshooting guides for common and advanced issues Torque Specifications: Includes torque values for all critical fasteners (engine, chassis, etc.) Clearances And Tolerances: Specifications for piston-to-cylinder, ring gap, bearing clearances, etc. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Image Resolution: High-resolution (typical for quality PDF manuals, enabling clear viewing of diagrams and text) Searchability: Searchable text (standard for well-produced PDF manuals) Binding Type Digital Format Attribute: N/A (Digital PDF) Paper Type Digital Format Attribute: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, two-stroke, single-cylinder Displacement: 124.8 cc (7.6 cu in) Bore X Stroke: 54 mm x 54.5 mm Power Valve System: Rotax 'Power Jet' or similar electronic power valve system for improved torque and top-end power Performance Horsepower Peak: Approximately 28-34 hp at the crank (depending on specific market restrictions and year) at around 11,000-12,000 rpm Torque Peak: Approximately 1.8-2.0 kgf-m (13-14.5 lb-ft) at around 10,000-11,000 rpm Fuel System Carburetor Type: Dell'Orto PHBH 28 or PHVA 30 (common variants, check specific model year) Fuel Delivery: Premix or oil injection system Ignition Ignition System: Electronic CDI with variable ignition timing 🔧 Transmission Standard Type: 6-speed constant mesh Features Clutch: Wet, multi-plate Final Drive: Chain drive (e.g., 16T front, 44T rear sprocket, specific ratios vary) 📐 Dimensions Exterior Wheelbase: Approx. 1,370 mm (53.9 in) - varies slightly by year/model code Weights Dry Weight: Approx. 130-135 kg (287-298 lbs) - varies by year/specifications Fuel Tank Capacity: Approx. 7.5 - 8 liters (1.9 - 2.1 US gal) 🛡️ Safety Features Ratings Crash Test Data: N/A (Motorcycle, not subject to automotive crash testing standards) Active Features Braking System: Disc brakes front and rear (e.g., 320mm front disc, 220mm rear disc, often with 4-piston caliper front) Suspension: Performance-oriented front...