🏷️ Basic Information Identification Make: Aprilia Model: RS 125 Model Designation: RS 125 (Rotax 122) Production Years Covered: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 Codes Chassis Code Range: AP0001-APxxxx (approximate, specific VIN ranges vary by market) Engine Code: Rotax 122 👋 Introduction Market Position Segment: Lightweight Supersport/Sportbike Target Audience: Enthusiast riders, DIY mechanics, track day participants Key Selling Points: Aggressive styling, sporty handling, potent 2-stroke engine for its class. Competitive Analysis Direct Competitors: Yamaha YZF-R125 (later models), Honda CBR125R (later models), Cagiva Mito 125, Suzuki RG125. Unique Selling Proposition: Aprilia's heritage in Grand Prix racing, distinct Italian design, and the renowned Rotax engine. Key Features Design Philosophy: Performance-oriented supersport replica with race-inspired aerodynamics and ergonomics. Handling Characteristics: Agile and precise due to lightweight chassis and well-tuned suspension. 📋 Manual Details Coverage Areas Geographic Coverage: Global (primarily European specifications, but applicable to worldwide models) Trim Level Coverage: All RS 125 variants within the specified model years Page Count Estimated Page Count: 300-500 pages (typical for comprehensive factory service manuals) Manual Type Manual Type: Factory Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, cylinder head, cylinder, piston, crankshaft, connecting rod, bearings, seals, gaskets, lubrication system, cooling system. Fuel System: Carburetor (Dell'Orto PHBH 28/30 AS/BS), fuel tank, fuel pump, fuel lines, oil injection system. Ignition System: CDI ignition, spark plugs, stator, rotor, ignition coil, wiring. Transmission Drivetrain: Gearbox (6-speed), clutch (wet multi-plate), chain drive, sprockets, gear shift mechanism. Chassis Frame: Frame (aluminum alloy twin-spar), sub-frame, footpegs, steering head. Suspension: Front forks (Marzocchi M1, Paioli, or White Power, 40mm stanchion), rear shock absorber (monoshock), swingarm, linkage system. Brakes: Front brake (disc, dual piston caliper, Brembo or Grimeca), rear brake (disc, single piston caliper), brake fluid specifications, bleeding procedures. Electrical System: Wiring diagrams, lighting system (headlight, taillight, indicators), battery, starter motor, charging system, fuses, switches, instrumentation. Bodywork Fairings: Fairing panels, seat, fuel tank cover, fenders, mounting points, graphics. Procedures Included Scheduled Maintenance: Oil changes, spark plug replacement, air filter cleaning/replacement, chain adjustment, brake system inspection, coolant checks, valve clearance checks (if applicable to 2-stroke). Troubleshooting: Diagnostic charts for common problems, identification of causes and solutions for starting issues, running problems, electrical faults. Engine Repair: Complete engine disassembly and reassembly, bore and hone, piston ring replacement, crankshaft seal replacement, carburetor tuning and rebuilding. Transmission Repair: Clutch adjustment and replacement, gearbox disassembly and inspection, gear inspection, bearing replacement. Suspension Service: Fork seal replacement, fork oil change and level setting, rear shock absorber overhaul (where applicable), swingarm bearing lubrication. Brake Service: Brake pad replacement, disc inspection and replacement, caliper overhaul, brake line replacement, brake system bleeding. Electrical Diagnostics: Wiring harness troubleshooting, component testing (stator, coil, CDI), lighting system repair. Bodywork Assembly: Fairing removal and installation, seat removal, minor bodywork repair guidelines. Technical Depth Depth Level: Comprehensive (covers basic maintenance to full engine and component overhauls) Diagnostic Capabilities: Detailed troubleshooting procedures and symptom-based diagnostics. Rebuild Procedures: Full step-by-step instructions for engine, transmission, and suspension rebuilds. Wiring Diagrams: Detailed, color-coded wiring diagrams for all electrical systems. Torque Specifications: Precise torque values for all critical fasteners and components. Clearances And Tolerances: Specific measurements for engine components, bearings, and other wear items. 📊 Manual Specifications File Format File Format: PDF Searchability: Text-searchable (optimizes for quick information retrieval). Print Quality Print Quality: High-resolution scans, clear diagrams and text. Diagram Clarity: Crisp and detailed technical illustrations and exploded views. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Bore X Stroke: 54 mm x 54.5 mm Displacement: 124.8 cc Compression Ratio: Approx. 12.0:1 Power Output Hp: Approx. 30-34 HP (varies by market and tuning) Power Output Kw: Approx. 22-25 kW Peak Rpm: Approx. 11,000 - 12,000 RPM Cooling System: Liquid-cooled with radiator and fan Performance Top Speed: Approx. 100-115 mph (160-185 km/h) Fuel System Carburetor Model: Dell'Orto PHBH 28 AS or PHBH 30 BS Fuel Type: Unleaded gasoline, minimum 95 RON (octane rating) Oil Injection: Automatic oil injection system for pre-mixing fuel and oil. Oil Type Injection: 2-stroke synthetic engine oil meeting API TC or JASO FD standards. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh sequential gearbox Clutch Type: Wet multi-plate clutch Final Drive: Chain drive Features Gear Ratios: Specific gear ratios available in the manual, optimized for performance. Clutch Operation: Cable-actuated 📐 Dimensions Exterior Length: Approx. 1950 mm Width: Approx. 730 mm Height: Approx. 1060 mm Wheelbase: Approx. 1345 mm Weights Dry Weight: Approx. 131 kg Wet Weight: Approx. 140 kg (with fluids) Fuel Tank Capacity: Approx. 7.4 Liters (including 1.2 Liter reserve) 🛡️ Safety Features Ratings Safety Certification: CE compliant (Europe), relevant national safety standards. Active Features Braking System: Dual disc front, single disc rear for effective stopping power. Tires: Sport-oriented tire sizes...