🏷️ Basic Information Identification Make: Aprilia Model: Leonardo 125 Year: 1998 Vehicle Type: Scooter Codes Chassis Code Prefix: AP04 👋 Introduction Market Position Segment: 125cc class scooter, popular for urban commuting and entry-level riders. Competitive Analysis Competitors: Competed with models like the Yamaha Majesty 125, Piaggio X9 125, Honda Pantheon 125, and Suzuki Burgman 125. Key Features Design: Modern, aerodynamic styling with a comfortable riding position and practical under-seat storage. Performance: Balanced performance for city use, offering adequate power and maneuverability. Reliability: Generally considered a robust and reliable scooter when properly maintained. 📋 Manual Details Coverage Areas Manual Type: Full Service Repair Manual Language: English Format: Digital (likely PDF, though not explicitly stated, common for this type of manual) Page Count: Estimated 200-350 pages (typical for a full service manual covering all aspects) 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, troubleshooting, and component replacement. Fuel System: Carburetor adjustment and overhaul, fuel delivery system, fuel tank, and fuel lines. Ignition System: CDI unit, spark plug, ignition timing, and related components. Cooling System: Liquid cooling system, radiator, coolant pump, hoses, and thermostat. Transmission: Automatic CVT (Continuously Variable Transmission) operation, maintenance, belt replacement, roller weights, and variator/clutch assembly. Brakes: Front and rear brake systems (likely disc front, drum rear), caliper overhaul, brake fluid replacement, bleeding procedures, and pad/shoe replacement. Suspension: Front telescopic forks and rear monoshock or twin shock absorber system, including seal replacement and fluid levels. Steering: Handlebar assembly, steering stem bearings, and linkage adjustments. Electrical System: Wiring diagrams, lighting system, starter motor, battery, charging system (stator/regulator), horn, and instrument cluster. Bodywork: Fairing removal and installation, seat, storage compartments, and cosmetic component care. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, tire pressure, chain adjustment (if applicable, though unlikely on this CVT model), and lubrication points. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues with symptom-based solutions. Rebuilds: Detailed instructions for engine component rebuilds (e.g., cylinder head, piston, crankshaft) and transmission overhaul. Component Replacement: Step-by-step guides for replacing wear items like brake pads, tires, belts, and bearings. Adjustments: Carburetor idle speed and mixture, brake lever free play, and throttle cable free play. Technical Depth Depth: Comprehensive, suitable for professional mechanics and experienced DIY enthusiasts. Covers detailed disassembly, torque specifications, clearances, and diagnostic procedures. 📊 Manual Specifications File Format File Type: PDF Searchable: Yes (assumed for a quality digital manual) Printable: Yes (assumed for a quality digital manual) Print Quality Image Resolution: High-resolution scans or original manufacturer artwork for clear diagrams and text. Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, liquid-cooled, single-cylinder Displacement: 124.6 cc Bore X Stroke: 52.4 mm x 57.9 mm Compression Ratio: 11.0:1 (Approximate, check manual for exact) Valve Train: SOHC, 4 valves Performance Horsepower: Approximately 12-15 HP (subject to market regulations and tuning) Torque: Approximately 9-11 Nm (subject to market regulations and tuning) Fuel System Carburetor: Mikuni B26 (or similar 26mm carburetor) Fuel Type: Unleaded gasoline 95 RON Fuel Capacity: Approximately 8.5 Liters 🔧 Transmission Standard Transmission Type: Automatic CVT Clutch: Centrifugal clutch Features Drive Type: Belt drive to rear wheel 📐 Dimensions Exterior Length: Approximately 1960 mm Width: Approximately 740 mm Height: Approximately 1350 mm Weights Dry Weight: Approximately 145 kg Gross Vehicle Weight Rating: Approximately 300 kg Cargo Underseat Storage: Sufficient for one full-face helmet and small items. 🛡️ Safety Features Ratings Crash Safety: N/A (Scooters are not typically rated by agencies like NHTSA in the same way as cars). Active Features Braking System: Disc front brake, Drum rear brake (typical configuration). Lighting: Headlight, taillight, brake lights, turn signals. Passive Features Frame Construction: Steel tube frame for rigidity. Mirrors: Integrated handlebar mirrors for rear visibility. 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer, tachometer, fuel gauge, coolant temperature gauge, and indicator lights. Driver Assistance ABS: ABS was not a standard feature on the 1998 Leonardo 125 model. Connectivity Connectivity Features: None (basic scooter technology for its era). 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000 - 5,000 km or annually, whichever comes first (check manual for exact). Air Filter Cleaning: Every 3,000 - 6,000 km (depends on operating conditions). Spark Plug Replacement: Every 6,000 - 10,000 km. Cvt Belt Inspection: Inspect every 6,000 km, replace as needed (typically every 12,000-20,000 km). Brake Fluid Replacement: Every 1-2 years or as recommended. Fluid Specifications Engine Oil Type: SAE 10W-40 or 15W-50 API SG or higher (confirm with manual). Engine Oil Capacity: Approximately 1.0 - 1.2 Liters (check dipstick/level window). Coolant Type: Ethylene glycol-based coolant (50/50 mix with distilled water). Brake Fluid Type: DOT 4. Known Issues Carburetion: Carburetor jets can become clogged with age and fuel deposits, requiring cleaning or rebuilding. Electrical Connectors: Corrosion or looseness in electrical connectors can lead to intermittent issues, especially with...