🏷️ Basic Information Identification Make: Aprilia Model: RS125 Year: 1999 Vehicle Type: Sport Motorcycle Codes Vin Code Region: ZDA (typically used for Aprilia models) 👋 Introduction Market Position Motorcycle Segment: Lightweight Sportbike / 125cc Class Competitive Analysis Key Competitors 1999: Yamaha YZF-R125 (later models), Honda CBR125R (later models), Cagiva Mito 125, Derbi GPR125 Key Features Performance Orientation: Designed for sporty riding, track day potential, and nimble handling. Design Aesthetics: Sharp, aggressive styling reminiscent of larger Aprilia sportbikes. Target Audience: Enthusiasts seeking a high-performance 125cc sportbike, often used for track days or spirited road riding. 📋 Manual Details Coverage Areas Manual Coverage Scope: Complete Owner's Manual Page Count Estimated Page Count: Varies by edition, typically 100-200 pages for this model/year Manual Type Manual Classification: Owner's Manual Language Language Of Manual: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine System: Operation, basic maintenance, lubrication, cooling system (if applicable for 2-stroke) Fuel System: Fuel tank, carburetor operation, fuel petcock Ignition System: Spark plug, ignition timing basics Transmission System: Gearbox operation, clutch operation Chassis Components: Frame, suspension (front forks, rear shock), steering Braking System: Front and rear brake operation, lever/pedal adjustments Electrical System: Lighting, horn, battery maintenance, fuse information Cooling System: Radiator, coolant level, proper operation (for liquid-cooled models) Exhaust System: Basic information on exhaust components Procedures Included Maintenance Procedures: Pre-ride checks, regular service intervals, chain lubrication and adjustment Troubleshooting Guides: Basic problem identification and solutions for common issues Operator Controls: Explanation of dashboard instruments, switches, and controls Safety Precautions: Riding safety, protective gear recommendations, motorcycle handling Fluid Checks: Checking and topping up oil (pre-mix or separate oil tank), coolant, brake fluid Tire Maintenance: Tire pressure recommendations, inspection for wear Technical Depth Depth Of Coverage: Comprehensive owner-level maintenance and operation; does not typically include in-depth internal engine/transmission rebuild procedures. Diagnostic Capability: Basic fault identification, not advanced electronic diagnostics. 📊 Manual Specifications File Format Digital File Type: PDF Print Quality Printability: High-resolution, printable pages Binding Type Binding Format: N/A (Digital Download) Paper Type Physical Paper Type: N/A (Digital Download) Compatibility Operating System Compatibility: All versions of Windows & Mac Requirements Software Requirement: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Configuration: Single-cylinder, 2-stroke Engine Displacement: 124.8 cc Bore X Stroke: 54 mm x 54.5 mm Cooling System: Liquid-cooled Valvetrain: Rotary disc valve intake Performance Horsepower Estimate: Approx. 30-34 HP (variant dependent, often restricted for learner permits) Torque Estimate: Approx. 20-22 Nm Fuel System Carburetor Model: Dell'Orto PHBH 28 (common fitment) Fuel Delivery: Carburetor, often with an oil injection system for 2-stroke lubrication 🔧 Transmission Standard Transmission Type: 6-speed constant mesh manual Optional Gearbox Options: N/A (Standard 6-speed) Features Clutch Type: Wet multi-plate 📐 Dimensions Exterior Length: Approx. 1940 mm Width: Approx. 685 mm Height: Approx. 1135 mm Wheelbase: Approx. 1340 mm Weights Dry Weight: Approx. 120 kg Fuel Tank Capacity: Approx. 12 Liters 🛡️ Safety Features Ratings Safety Certifications: EEC Homologation (European Economic Community) Active Features Braking System Front: Single 320mm disc, 4-piston caliper (often Brembo) Braking System Rear: Single 220mm disc, 2-piston caliper Suspension Front: Upside-down telescopic forks (e.g., Marzocchi) Suspension Rear: Monoshock with adjustable preload Passive Features Lighting: Halogen headlight, LED taillight Indicators: Front and rear turn signals 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer, tachometer, odometer, fuel gauge (if applicable), indicator lights. Driver Assistance Electronic Aids: None (basic mechanical systems only). 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for 2-stroke oil type/level checks and oil injection system maintenance. Gearbox oil change typically every 5,000-10,000 km. Spark Plug Replacement: Every 5,000-10,000 km, depending on plug type and usage. Chain Adjustment Lubrication: Check and lubricate chain every 500-1000 km, adjust as needed. Fluid Specifications Engine Oil Type: Specific 2-stroke premix oil (if not oil injected) or 2-stroke injector oil (e.g., Castrol TTS, Motul 747). Gearbox Oil Specification: API GL-4 or GL-5, SAE 75W/90 or 80W/90 transmission oil. Coolant Specification: Ethylene glycol based antifreeze mixture (50/50 with distilled water). Brake Fluid Specification: DOT 4 Known Issues Common Wear Items: Clutch plates, piston rings, spark plug, chain and sprockets, exhaust valve (if equipped). 2-Stroke Engine Care: Proper 2-stroke oil mixture/injection, avoiding prolonged idling, and decarbonizing the exhaust port/power valve are crucial for longevity. 📚 Vehicle History Brand Heritage Aprilia Legacy: Aprilia is an Italian manufacturer with a strong racing heritage, particularly in smaller displacement classes like 125cc and 250cc Grand Prix racing. Model Evolution Rs125 Lineage: The RS125 model has been a consistent performer in Aprilia's lineup, evolving through various engine updates, chassis refinements, and styling changes since its introduction. Production Aprilia Manufacturing Base: Italy 🏆 Awards & Recognition Recognitions Market Reputation: Highly regarded in its class for performance, handling, and race-bred styling. Often considered a benchmark in the 125cc sportbike segment.