🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Generation: RP/RG/RM Covered Years: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 👋 Introduction Market Position Segment: Lightweight Sportbike / Commuter Target Audience: Performance-oriented riders, track day enthusiasts, daily commuters seeking sporty handling Competitive Analysis Key Competitors: Yamaha YZF-R125 (later models), Honda CBR125R, Cagiva Mito 125 Unique Selling Points: Aggressive styling, capable chassis, rev-happy two-stroke engine (in earlier iterations), lightweight feel Key Features Design Philosophy: MotoGP-inspired styling and performance in a 125cc package Performance Orientation: Focus on handling and rider engagement over outright straight-line speed 📋 Manual Details Coverage Areas Primary Coverage: Complete Workshop Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Overhaul Page Count Estimated Pages: Hundreds (typical for comprehensive workshop manuals) Manual Type Type: Workshop Service Repair Manual Language Language: English (presumed, typical for service manuals) Format Format: Downloadable Digital Manual (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine assembly, disassembly, tuning, carburetor, exhaust, cooling system Chassis: Frame, swingarm, suspension (front forks, rear shock), steering system Braking System: Front and rear brake caliper overhaul, master cylinders, brake lines, bleeding procedures Electrical System: Wiring diagrams, ignition system, lighting, battery, charging system, starter Fuel System: Carburetor (Dell'Orto PHBH/PHBL variants common), fuel lines, fuel tank, oil injection system Bodywork And Fairings: Fairing removal/installation, seat, fuel tank cover, minor body repairs Procedures Included Routine Maintenance: Oil changes, spark plug replacement, air filter cleaning/replacement, chain adjustment, lubrication Major Repairs: Engine rebuild (top and bottom end), gearbox inspection/repair, suspension overhaul, electrical diagnostics Troubleshooting: Diagnostic charts for common problems (starting issues, poor performance, electrical faults) Special Procedures: Carburetor tuning and synchronization, power valve operation and adjustment, suspension setup Technical Depth Depth: Comprehensive: From basic user maintenance to full engine and chassis rebuilds Diagnostic Capabilities: Detailed symptom-based troubleshooting guides and diagnostic procedures Component Overhaul: Step-by-step instructions for disassembling, inspecting, repairing, and reassembling all major components 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text (typically, depending on scan quality) Print Quality Quality: High resolution, clear diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder Displacement: 125cc Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 122) Cooling System: Liquid-cooled Power Valve System: Rotax Automatic Power Valve (APV) or similar electronic system Performance Horsepower: Approx. 30-34 hp (stock, depending on market and regulations) Torque: Approx. 18-20 Nm (stock) Redline: Approx. 10,500 - 11,000 RPM Fuel System Carburetor Model: Dell'Orto PHBH 28 or PHBL 26 (common variants) Fuel Type: Unleaded gasoline (min. 95 RON recommended) Oil Injection: Automatic 2-stroke oil injection system Oil Type: API TC-rated 2-stroke synthetic oil 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch Type: Wet multi-plate Optional Optional Features: N/A (standardized for this model) Features Final Drive: Chain drive Gear Ratios: Detailed gear ratios provided in manual Transmission Fluid: Motorcycle-specific gear oil (e.g., SAE 80W/90) 📐 Dimensions Exterior Length: Approx. 1940 mm Width: Approx. 680 mm (at handlebars) Height: Approx. 1060 mm (at seat) Wheelbase: Approx. 1350 mm Ground Clearance: Approx. 150 mm Weights Dry Weight: Approx. 120-130 kg Fuel Tank Capacity: Approx. 7.5 - 8.0 Liters Oil Tank Capacity: Approx. 1.0 - 1.2 Liters 🛡️ Safety Features Ratings Crash Test Ratings: N/A (Motorcycle safety is typically assessed through independent testing and rider experience) Active Features Braking System Type: Dual-disc front, single-disc rear Brake Calipers: Multi-piston radial-mount front caliper, conventional rear caliper (specifics vary by year) Tires Front: 110/70-17 Tires Rear: 150/60-17 Passive Features Lighting: Halogen headlight, LED taillight (later models) Instrumentation: Analog tachometer, digital speedometer, fuel gauge, warning lights 💡 Technology Features Infotainment Infotainment System: N/A (basic instrumentation) Driver Assistance ABS: N/A (ABS was not a common feature on 125cc bikes of this era) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually (engine oil for transmission/clutch, typically not a separate engine oil sump) Spark Plug Replacement: Every 5,000-7,000 km (recommend specific plug type) Air Filter Cleaning: Every 3,000 km or as needed, depending on conditions Chain Lubrication Adjustment: Every 500-1000 km Power Valve Cleaning: Every 6,000-10,000 km Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze, 50% mixture with distilled water Brake Fluid Type: DOT 4 Fork Oil Type: Specific viscosity (e.g., SAE 5W or 10W), quantity as per manual Known Issues Two Stroke Wear: Piston rings, cylinder wear, power valve sticking due to carbon buildup are common on high-mileage two-strokes. Carburetor Issues: Jetting can be sensitive; proper cleaning and adjustment are crucial for optimal performance. Electrical Gremlins: Older wiring can degrade; check connections and grounds. Cooling System Leaks: Hose degradation and radiator integrity can lead to leaks. 📚 Vehicle History Brand Heritage Brand Origin: Aprilia is an Italian manufacturer renowned for its performance motorcycles, particularly in the sportbike and racing segments. Model Evolution Rs125 Development: The RS125 was a flagship...