🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Year: 2002 Product Type: Factory Service Repair Manual Codes Chassis Codes: RS125 (Rotax 122) Engine Codes: Rotax 122 (125cc, 2-stroke) 👋 Introduction Market Position Segment: Lightweight sportbike, entry-level performance motorcycle Target Audience: Enthusiasts, aspiring racers, riders seeking a nimble and engaging riding experience Competitive Analysis Key Competitors: Yamaha YZF-R125 (later models), Cagiva Mito 125, Honda CBR125R (later models), Suzuki GSX-R125 (later models) Key Features Design Philosophy: Race-replica styling, advanced chassis for its class, potent 2-stroke engine performance Distinguishing Characteristics: Aggressive styling, high-revving 2-stroke engine, sophisticated frame and suspension components for a 125cc bike 📋 Manual Details Coverage Areas Main Coverage: Maintenance, Repair, Troubleshooting, Diagnostics, Specifications Page Count Estimated Pages: Approximately 300-400 pages (typical for this era/model) Manual Type Type: Factory Service Manual / Repair Manual Language Primary Language: English (common for factory manuals distributed internationally) Format Download Format: PDF 📖 Manual Coverage Systems Covered Engine: Engine overhaul, disassembly, assembly, cylinder head, piston, connecting rod, crankshaft, lubrication system, cooling system, ignition system, exhaust system, engine management (carburetion) Transmission: Gearbox, clutch, shift mechanism, gear ratios, lubrication Chassis: Frame, swingarm, suspension (forks, rear shock), steering system, wheels, hubs, spokes Brakes: Front and rear brake systems, master cylinders, calipers, brake discs, brake lines, bleeding procedures Electrical: Wiring diagrams, lighting system, charging system (stator, rectifier/regulator), battery, starter motor, ignition system components, switches, sensors Fuel System: Fuel tank, fuel lines, fuel pump (if applicable), carburetor (Dell'Orto PHBH 28 AS or similar), fuel filter Cooling System: Radiator, coolant hoses, water pump, thermostat, coolant specifications Bodywork: Fairings, seat, fuel tank cover, fenders, mounting hardware Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug checks, chain adjustment, brake pad replacement, fluid checks, pre-ride inspections Repair: Engine rebuilds, transmission servicing, suspension overhaul, brake system repairs, electrical component replacement, carburetor tuning and rebuilding, fairing repair and installation Troubleshooting: Diagnostic charts for common problems, symptom-based troubleshooting guides, electrical fault finding Diagnostics: Component testing procedures, measurement specifications (e.g., compression, electrical resistance), timing adjustments Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine and chassis overhauls. Includes detailed diagrams and specifications for in-depth repairs. 📊 Manual Specifications File Format PDF Quality: High resolution, searchable text (assuming original scanned document quality) Printable: Yes, pages are typically formatted for printing Binding Type Original Binding: Wire-bound or perfect bound (factory original) Paper Type Original Paper: Durable, glossy or semi-gloss paper stock suitable for workshop environments ⚙️ Engine Specifications Primary Engine Type: Rotax 122, 2-stroke, single-cylinder, liquid-cooled Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Compression Ratio: Approximately 12.5:1 (varies slightly by market/specific tune) Power Output: Approximately 30-34 hp (15 kW for restricted models in some regions), ~30-33 hp for full power versions Torque: Approximately 2.0-2.3 kgf-m (14.5-16.5 Nm) Cooling Method: Liquid-cooled Valvetrain: Reed valve intake, powervalve (A.E.S. - Aprilia Exhaust System) controlled exhaust port Fuel System Carburetor: Dell'Orto PHBH 28 AS (or similar 28mm slide carburetor) Fuel Type: Unleaded gasoline, minimum 95 RON (octane rating) Oil Mixing: Pre-mix or automatic oil injection system Lubrication Type: Total loss lubrication system (oil injection) and splash lubrication for gearbox 🔧 Transmission Standard Type: 6-speed constant mesh sequential gearbox Clutch: Wet multi-plate clutch Features Gear Ratios: Manual will contain specific gear ratios for each gear (e.g., 1st: 11/32, 2nd: 14/28, 3rd: 17/26, 4th: 19/24, 5th: 21/23, 6th: 22/22) Final Drive: Chain drive Gearbox Oil Spec: Manual will specify SAE 75W/90 or equivalent motorcycle gearbox oil 📐 Dimensions Exterior Length: Approx. 1960 mm Width: Approx. 700 mm Height: Approx. 1090 mm Wheelbase: Approx. 1350 mm Weights Dry Weight: Approx. 130 kg Fuel Tank Capacity: Approx. 11 Liters (including 2.5L reserve) 🛡️ Safety Features Ratings NHTSA Rating: N/A (motorcycle, not applicable) Active Features Braking System: Hydraulic disc brakes front and rear Suspension: Upside-down telescopic front forks (Marzocchi or similar), Monoshock rear suspension with adjustable preload Passive Features Frame Construction: Aluminum twin-spar frame for rigidity and lightness Lighting: Dual headlights, tail light, brake light, turn signals 💡 Technology Features Infotainment Dashboard Features: Analog tachometer, speedometer, odometer, trip meter, engine temperature warning light, neutral indicator, turn signal indicators Driver Assistance ABS: Not equipped on the 2002 model 🔧 Maintenance Service Intervals Oil Change Engine: Refer to manual; typically every 3000-5000 km or annually for gearbox oil. 2-stroke oil tank requires regular replenishment. Spark Plug Check: Refer to manual; typically every 5000-8000 km Chain Maintenance: Lubrication and adjustment every 500-1000 km, inspection for wear Fluid Specifications Engine Oil 2T: Semi-synthetic or fully synthetic 2-stroke engine oil for premix or oil injection system Coolant: Ethylene glycol-based antifreeze/coolant mixture, typically 50/50 with distilled water Brake Fluid: DOT 4 or DOT 5.1 hydraulic brake fluid Known Issues Common Wear Items: Clutch plates, piston rings, exhaust valve components (powervalve), chain and sprockets, suspension seals, wheel bearings. Powervalve Maintenance: Carbon buildup in the exhaust powervalve...