🏷️ Basic Information Identification Make: Aprilia Model: Leonardo 300 Year: 2004 👋 Introduction Market Position Segment: Mid-size scooter for urban commuting and recreational use Competitive Analysis Competitors: Piaggio Beverly 300, Yamaha X-MAX 250/300, Kymco Xciting 300, Suzuki Burgman 250/400 Key Features Features: Comfortable ride, practical storage, agile handling, reliable performance, stylish Italian design 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Maintenance, Diagnostics, Troubleshooting Secondary Coverage: Wiring Diagrams, Specifications, Component Location Page Count Estimated Pages: 300-400 (typical for this type of manual) Manual Type Type: Workshop Service Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Internal combustion engine, cooling system, lubrication system, ignition system, fuel system, exhaust system Drivetrain: Transmission (CVT), final drive, clutch system Chassis: Frame, front suspension (telescopic fork), rear suspension (dual shock absorbers), steering system, braking system (front disc, rear disc) Electrical: Battery, starting system, charging system (alternator/stator), lighting system, instrumentation, wiring harnesses, electronic control unit (ECU) diagnostics Bodywork: Fairings, seat, storage, body panels, fasteners Fuel System Details: Carburetor adjustment, cleaning, and overhaul; fuel pump operation (if FI variant); fuel filter replacement. Ignition System Details: Spark plug inspection and replacement, ignition coil testing, CDI unit testing (if applicable), timing checks. Suspension Details: Front fork seal replacement, rear shock absorber inspection and replacement, spring preload adjustment (if applicable). Electrical Diagrams: Complete color-coded wiring diagrams for all electrical systems. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, chain/belt adjustment (if applicable), fluid checks and changes Repair: Engine overhaul, carburetor/fuel injection system repair, transmission disassembly/reassembly, suspension component replacement, brake system overhaul, electrical component troubleshooting and replacement Diagnostics: Troubleshooting common problems, interpreting diagnostic codes (if applicable), using diagnostic tools Troubleshooting Guides: Detailed diagnostic trees and symptom-based troubleshooting for common issues. Technical Depth Depth: Comprehensive (from basic maintenance to full engine and component rebuilds) Torque Specifications: Includes essential torque values for engine, chassis, and braking components. Special Tools: Lists required special tools for specific repair procedures. 📊 Manual Specifications File Format File Quality: High-resolution, searchable PDF Print Quality Printability: Printable pages for physical reference Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, liquid-cooled, SOHC Displacement: 278 cc (approximate, may vary slightly based on specific engine code) Bore X Stroke: 75 mm x 63 mm (typical for this displacement range) Compression Ratio: 10.5:1 (typical for this type of engine) Performance Horsepower: Approx. 21-23 HP @ 7,000-7,500 RPM Torque: Approx. 23-25 Nm @ 5,500-6,000 RPM Fuel System Fuel Delivery: Carburetor (likely Keihin CV type) or Fuel Injection (depending on specific market variant) Fuel Type: Unleaded gasoline, minimum 91 octane (RON) Lubrication Oil Type: SAE 10W-40, API SG or higher, JASO MA certified motorcycle oil Oil Capacity: Approx. 1.3 - 1.5 Liters (including filter) Cooling Coolant Type: Ethylene glycol-based antifreeze, 50/50 mix with distilled water Coolant Capacity: Approx. 0.8 - 1.0 Liters 🔧 Transmission Standard Transmission Type: Automatic Continuously Variable Transmission (CVT) Drive Type: Belt drive to rear wheel Features Clutch Type: Automatic centrifugal clutch Transmission Fluid Type: Not applicable, uses engine oil for shared lubrication 📐 Dimensions Exterior Length: Approx. 2000-2100 mm Width: Approx. 750-800 mm Height: Approx. 1300-1400 mm (including windscreen) Wheelbase: Approx. 1450-1500 mm Weights Dry Weight: Approx. 160-170 kg Gross Vehicle Weight Rating: Approx. 300-330 kg Capacities Fuel Tank Capacity: Approx. 12-14 Liters Storage Capacity: Under-seat storage, glove box 🛡️ Safety Features Ratings Safety Compliance: European (Euro 2/3) emissions standards Active Features Braking System: Front: Hydraulic disc brake, Rear: Hydraulic disc brake Parking Brake: Lever-actuated mechanism Passive Features Lighting: Halogen headlight, LED taillight, turn signals Tires: Front: 120/70-15, Rear: 140/70-14 (typical sizes) 💡 Technology Features Infotainment Instrumentation: Analog speedometer and tachometer, digital odometer, fuel gauge, coolant temperature gauge, indicator lights Driver Assistance Assistance Systems: None (standard for this era of scooter) Connectivity Connectivity Features: None (standard for this era of scooter) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 - 4,000 km or annually Air Filter Replacement Interval: Every 6,000 - 8,000 km or as needed Spark Plug Replacement Interval: Every 8,000 - 10,000 km Transmission Fluid Change Interval: Not applicable (shared lubrication) Fluid Specifications Brake Fluid Type: DOT 4 Coolant Specification: 50% Ethylene Glycol and 50% Distilled Water Known Issues Common Problems: Potential for stator failure, regulator/rectifier issues, carburetor gumming if not run regularly, wear on CVT components (belt, rollers) at higher mileage. Some electrical connections can be prone to corrosion. 📚 Vehicle History Brand Heritage Brand Origin: Italian manufacturer with a strong heritage in motorcycles and scooters Model Evolution Leonardo Lineage: The Leonardo line represented Aprilia's entry into the maxi-scooter segment, offering comfort and performance for touring and commuting. The 300cc variant was a popular choice for its balance of power and economy. Production Production Period: The Leonardo series was produced from the late...