🏷️ Basic Information Identification Make: Aprilia Model: Leonardo 125 Codes Product Code: APR-LEON-125-9703-SRM 👋 Introduction Market Position Segment: Premium 125cc scooter market, appealing to urban commuters and younger riders. Competitive Analysis Competitors: Honda Pantheon 125, Piaggio Liberty 125, Gilera Runner 125, Yamaha Majesty 125. Key Features Design: Sporty Italian styling, comfortable seating, practical under-seat storage. Performance: Agile handling, suitable for city traffic and light touring, reliable performance for its class. 📋 Manual Details Coverage Areas Model Years Covered: 1997, 1998, 1999, 2000, 2001, 2002, 2003 Engine Variants Covered: 125cc (LE257M, LE257S, LE257V) Page Count Estimated Pages: 250 Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, and component diagnostics (carburetor, ignition, cooling, lubrication). Transmission: Automatic CVT (Continuously Variable Transmission) service, belt replacement, roller inspection, clutch operation. Brakes: Front and rear brake system service (disc and drum), hydraulic components, pad/shoe replacement, bleeding procedures. Electrical: Wiring diagrams, lighting system, starting system, charging system (stator, regulator/rectifier), battery maintenance, fuses, switches. Chassis Suspension: Front fork (telescopic hydraulic) overhaul, rear shock absorber replacement, swingarm and bearing service. Fuel System: Fuel tank service, fuel line maintenance, carburetor cleaning and adjustment (Dell'Orto PHVA/PHVB series). Cooling System: Liquid-cooled system, radiator, fan, coolant type and capacity, hose replacement. Bodywork Trim: Fairing removal and installation, seat, storage compartments, paneling. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, spark plug service, coolant flushes, brake fluid replacement. Troubleshooting: Diagnostic charts for common problems, symptom-based troubleshooting for engine, electrical, and mechanical issues. Repair: Step-by-step instructions for component repair and replacement, including engine rebuilds, suspension work, and electrical diagnostics. Adjustment: Carburetor tuning, idle speed adjustment, brake lever free play, chain tension (if applicable, though mostly belt drive). Assembly Disassembly: Detailed instructions for complete disassembly and reassembly of major vehicle components. Technical Depth Depth: Comprehensive (covers routine maintenance through complete engine rebuilds and detailed electrical diagnostics). 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High-resolution scans suitable for printing. Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, single-cylinder, liquid-cooled Displacement: 124.9 cc Bore X Stroke: 57 mm x 48.6 mm Compression Ratio: 10.2:1 Performance Horsepower: Approx. 14.7 HP @ 9000 rpm (variant dependent) Torque: Approx. 11.5 Nm @ 7500 rpm (variant dependent) Fuel System Carburetor: Dell'Orto PHVA 26/PHVB 26 (specific model varies) Fuel Capacity: 9 Liters Engine Internals Valve Train: SOHC, 4-valve 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Optional Optional Types: N/A (CVT is standard) Features Clutch: Automatic centrifugal clutch Gear Reduction: Integrated reduction gears 📐 Dimensions Exterior Length: Approx. 1920 mm Width: Approx. 730 mm Height: Approx. 1290 mm Wheelbase: Approx. 1360 mm Weights Dry Weight: Approx. 130 kg Curb Weight: Approx. 140 kg Cargo Storage: Under-seat storage compartment, glove box. 🛡️ Safety Features Ratings Crash Test Ratings: N/A (Scooter segment not typically subjected to automotive-style crash testing) Active Features Braking System: Front: Disc brake, Rear: Drum brake (some later models may have optional rear disc) Lighting: Halogen headlight, LED tail light, turn signals. Passive Features Frame: Steel underbone frame for structural integrity. Tires: Tubeless tires for reduced risk of sudden deflation. 💡 Technology Features Infotainment Display: Analog speedometer, tachometer, fuel gauge, and indicator lights. Driver Assistance Features: N/A (Basic scooter technology for its era). 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 km or annually, whichever comes first (refer to manual for exact spec). Spark Plug Replacement: Every 6,000-10,000 km (refer to manual for specific plug type and gap). Air Filter Cleaning: Every 2,000-4,000 km (clean or replace as needed). Coolant Replacement: Every 2 years or as per manual recommendations. Fluid Specifications Engine Oil Type: API SG/SH or JASO MA, SAE 10W-40 (verify with manual for precise grade). Engine Oil Capacity: Approx. 1.0 Liters (without filter change), 1.1 Liters (with filter change) - verify with manual. Coolant Type: Ethylene glycol-based antifreeze mixture (50/50 with distilled water). Brake Fluid Type: DOT 4 Known Issues Common Problems: Carburetor gumming if not run regularly, potential aging of cooling system hoses, wear on CVT belt and rollers over time, electrical connector corrosion. Preventative Measures: Regular use, proper storage, periodic carburetor cleaning, checking and replacing wear items on schedule. 📚 Vehicle History Brand Heritage Manufacturer: Aprilia is an Italian manufacturer known for its performance motorcycles and scooters. Model Evolution Introduction Year: The Leonardo line was introduced in the mid-1990s, with the 125cc model being a core offering. Updates: Minor updates likely occurred across the model years regarding graphics, minor component revisions, and possibly emissions compliance. Production Manufacturing Location: Italy Production Period: 1997 - 2003 (for the 125cc variant covered by this manual). 🏆 Awards & Recognition Recognitions Awards Received: N/A (Specific awards for this model...