🏷️ Basic Information Identification Make: Aprilia Model: RS Year: 2001 Generation Generation: Second Generation (RS 125 Replica Era) Codes Model Code: RP 👋 Introduction Market Position Market Position: The Aprilia RS 125 of this era was positioned as a premium, high-performance small-displacement sportbike, appealing to younger riders and those seeking a track-day capable machine with a racing pedigree. It competed with other European 125cc sportbikes like the Cagiva Mito and Yamaha TZR. Competitive Analysis Competitive Analysis: The 2001 RS 125 was renowned for its potent Rotax 125cc two-stroke engine, advanced chassis, and aggressive styling. This manual provides the necessary documentation to maintain and repair such a sophisticated machine, distinguishing it from less technical or less performance-oriented competitors. Key Features Key Features: Comprehensive coverage of all major vehicle systems, detailed diagnostic procedures, clear step-by-step repair instructions, extensive use of exploded diagrams and illustrations, and essential technical specifications for accurate servicing. 📋 Manual Details Coverage Areas Coverage Areas: General Information, Periodic Maintenance, Frame/Body Panels/Exhaust System, Maintenance/Lubrication, Cylinder Head/Clutch, Balancer, Engine Top End, Engine Right Side, Engine Bottom End/Transmission, Fuel/Cooling System, Engine Removal/Installation, Wheel/Tires, Chassis, Final Drive/Steering, Crankcase/Crankshaft/Balancer, Front Wheel/Suspension, Brake System/Clutch, Electrical System, Wiring Diagram, Troubleshooting, Index Page Count Page Count: Estimated 300-500 pages (typical for comprehensive service manuals of this era) Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical (top and bottom end, clutch, transmission, balancer), Fuel system (carburetor, fuel lines), Cooling system (radiator, hoses, coolant), Exhaust system, Frame and chassis components, Body panels and fairings, Suspension (front and rear), Steering system, Brake system (front and rear), Electrical system (ignition, lighting, starting, charging), Wiring diagrams, Wheels and tires, Lubrication system. Procedures Included Procedures Included: Routine maintenance (oil changes, filter replacements, chain adjustment), Engine disassembly and reassembly, Carburetor tuning and overhaul, Clutch inspection and replacement, Transmission inspection and repair, Suspension adjustments and component replacement, Brake bleeding and pad replacement, Electrical troubleshooting and component testing, Wiring harness inspection and repair, Frame alignment checks, Diagnostic procedures for common issues, Torque specifications for all critical fasteners. Technical Depth Technical Depth: Comprehensive, covering basic maintenance to in-depth engine rebuilds and electrical system diagnostics. Suitable for both DIY enthusiasts and professional technicians. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans or digital creation, ensuring clear text and legible diagrams. Binding Type Binding Type: Digital (PDF) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, two-stroke, single-cylinder with Reed Valve Induction and Aprilia Exhaust Power Valve (APV) Engine Displacement: 125 cc (7.6 cubic inches) Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 125) Compression Ratio: Approx. 12.5:1 (may vary with tuning) Engine Make Model: Rotax 123 (or variant) Performance Horsepower Peak: Approx. 30-35 HP (stock, may be higher in restricted markets or performance variants) Torque Peak: Approx. 22-24 Nm (stock) Fuel System Carburetor: Dell'Orto PHBH 28 (or similar high-performance 28mm carburetor) Fuel Type: Unleaded gasoline (min. 95 RON recommended) Fuel Mixture: Premixed fuel/oil (oil injection system typically present) Lubrication Lubrication System: Automatic oil injection (separate oil reservoir) and wet sump for gearbox 🔧 Transmission Standard Transmission Type: 6-speed constant mesh gearbox Features Clutch Type: Wet multi-plate clutch Gear Ratios: Specific gear ratios provided in manual for each gear Transmission Fluid: Manual specifies required API GL-4 or GL-5 gear oil (e.g., SAE 75W/90 or 80W/90) 📐 Dimensions Exterior Wheelbase: Approx. 1340 mm (52.7 inches) Seat Height: Approx. 805 mm (31.7 inches) Weights Dry Weight: Approx. 130 kg (287 lbs) Fuel Tank Capacity: Approx. 12 liters (3.2 gallons) 🛡️ Safety Features Active Features Brakes Front: Dual 280mm discs with 4-piston calipers (e.g., Brembo) Brakes Rear: 220mm disc with 2-piston caliper Suspension Front: Upside-down telescopic forks, adjustable preload and rebound damping (e.g., Marzocchi) Suspension Rear: Monoshock absorber with adjustable preload and rebound damping Passive Features Frame Type: Aluminum twin-spar perimeter frame 💡 Technology Features Infotainment Infotainment System: Basic analog instrumentation including speedometer, tachometer, engine temperature gauge, fuel level warning light, and neutral indicator. Driver Assistance Driver Assistance Features: None (focus is on rider control and mechanical performance) 🔧 Maintenance Service Intervals Oil Change Interval: Every 4,000-6,000 km (or as specified by manual, often tied to engine hours for track use) Spark Plug Replacement: Every 6,000-8,000 km Air Filter Cleaning: Every 2,000-4,000 km (or more frequently in dusty conditions) Chain Lubrication Adjustment: Every 500-1,000 km Fluid Specifications Engine Oil Type: Manual specifies specific 2-stroke synthetic or semi-synthetic engine oil for oil injection system (e.g., Motul 7100 2T, Castrol TTS) Coolant Type: Ethylene glycol based coolant with anti-corrosion additives (e.g., Motul Motocool Expert) Brake Fluid Type: DOT 4 Known Issues Known Issues: Carbon build-up in exhaust port and power valve, wear on the power valve mechanism, premature cylinder/piston wear if not properly maintained,...