🏷️ Basic Information Identification Make: Aprilia Model: Leonardo 125 Year: 2001 Codes Model Code: Leonardo ST 125 (likely, based on typical Aprilia nomenclature for this period) 👋 Introduction Market Position Segment: Mid-size urban scooter, offering a balance of performance and practicality. Target Audience: Commuters, scooter enthusiasts, DIY mechanics looking for in-depth repair information. Competitive Analysis Competitors: Rivals included models like the Honda Pantheon 125, Suzuki Sixteen 125, Yamaha XMAX 125 (though XMAX came later), and Piaggio Skipper 125. Key Features Design: Sporty styling with a blend of Italian design flair, known for its agile handling and comfortable riding position. Performance: Adequate power for urban environments and light highway use, good fuel efficiency. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English (primary, common for factory manuals of this era) Format: Digital (likely PDF, common for modern reproductions of older service manuals) Page Count Estimated Page Count: 300-400 pages (typical for a comprehensive service manual for a scooter of this complexity) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnosis, timing, valve adjustment, piston/ring replacement, cylinder head service, carburetor overhaul and tuning. Fuel System: Fuel tank, fuel pump, fuel lines, carburetor (e.g., Dell'Orto PHBN 17.5, Keihin CVK, depending on specific model variant), fuel filter replacement. Ignition System: CDI unit, spark plug specifications and replacement, ignition coil testing, stator and rotor inspection. Cooling System: Air cooling system description, fan operation (if applicable), heat dissipation. Transmission: Automatic CVT (Continuously Variable Transmission) system, variator inspection and replacement, clutch operation and adjustment, drive belt inspection and replacement, torque converter. Brakes: Front and rear brake system diagnosis, hydraulic fluid specifications and bleeding procedures, brake pad replacement, caliper maintenance, disc inspection. Suspension: Front telescopic fork overhaul, oil change, seal replacement. Rear shock absorber inspection and replacement. Electrical System: Wiring diagrams, battery maintenance and testing, charging system (stator, rectifier/regulator), starter motor operation, lighting system troubleshooting, fuse box layout, horn, indicators. Frame And Bodywork: Chassis inspection, fairing removal and installation, seat removal, stand operation, body panel repair and alignment. Wheels And Tires: Tire pressure specifications, wheel bearing inspection and replacement, rim specifications. Procedures Included Maintenance: Oil and filter change intervals, air filter cleaning/replacement, spark plug replacement, brake fluid flush, drive belt check/replacement, gearbox oil change, lubrication points. Troubleshooting: Diagnostic flowcharts for common starting, running, and electrical issues. Symptom-based diagnosis guides. Repair: Step-by-step instructions for engine disassembly and reassembly, transmission servicing, suspension fork rebuild, brake caliper overhaul, electrical component replacement. Specifications And Data: Torque values for all fasteners, engine compression test procedures, carburetor jetting specifications, electrical resistance values, critical clearances. Technical Depth Depth: Comprehensive (covers basic maintenance to full engine and transmission rebuilds, including detailed electrical diagnostics). 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchable: Yes (typically, if generated from scanned or digital source) Printable: Yes (designed for printing individual sections or the entire manual) Print Quality Resolution: High-resolution scans or original digital formatting for clear diagrams and text. Binding Type Binding: N/A (Digital format; physical copies may vary, but typically wire-bound or perfect bound for service manuals) Paper Type Paper Quality: N/A (Digital format; physical manuals often use durable, glossy paper for diagrams) Completeness Completeness: Complete factory service manual, covering all aspects of repair and maintenance. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, single-cylinder, SOHC (Single Overhead Camshaft) Displacement: 124 cc Bore X Stroke: Approx. 52.4 mm x 57.8 mm (typical for this displacement) Compression Ratio: Approx. 10.0:1 to 11.0:1 (typical for this era's four-stroke 125s) Cooling System: Air-cooled Performance Horsepower: Approx. 10-12 HP (subject to specific tuning and market regulations) Torque: Approx. 9-10 Nm (subject to specific tuning and market regulations) Fuel System Carburetor: Typically a 17.5mm or 20mm Japanese carburetor (e.g., Dell'Orto PHBN 17.5 or Keihin CVK equivalent), possibly with automatic choke. Fuel Type: Unleaded gasoline, 95 RON recommended Lubrication Oil Type: SAE 10W-40 API SG or higher (or specified by Aprilia for wet clutch compatibility) Oil Capacity: Approx. 0.8 - 1.0 Liters (including filter, check manual for exact) 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) with dry clutch Optional Gear Ratios: Variable (CVT function) Features Drive Belt: Requires periodic inspection and replacement based on mileage and condition. Gearbox Oil: Separate gearbox oil, typically SAE 80W-90, with specific capacity (check manual). 📐 Dimensions Exterior Length: Approx. 1980 mm Width: Approx. 700 mm Height: Approx. 1250 mm (to top of handlebars) Wheelbase: Approx. 1370 mm Weights Dry Weight: Approx. 130 kg Gross Vehicle Weight Rating: Approx. 310 kg Cargo Storage: Under-seat storage compartment, often capable of fitting a full-face helmet. 🛡️ Safety Features Ratings Crash Test Results: N/A (Motorcycle/scooter safety is not rated by standard automotive agencies) Active Features Braking: Front and rear disc brakes for effective stopping power. Lighting: Halogen headlight, tail light, brake light, and turn signals for visibility. Passive Features Frame Construction: Steel...