🏷️ Basic Information Identification Make: Aprilia Model: Leonardo Sub Model: 125 Years Covered: 1997-2003 Codes Chassis Codes: AP157 👋 Introduction Market Position Segment: Lightweight scooter segment, popular for urban commuting and light touring. Target Audience: New riders, commuters, and owners seeking to maintain or repair their Aprilia Leonardo 125. Competitive Analysis Competitors: Honda Pantheon 125, Yamaha Majesty 125, Gilera Nexus 125 (in later years), Piaggio Skipper 125. Key Features Vehicle Design Philosophy: European styling with a focus on practicality, comfort, and sporty performance for a 125cc scooter. Key Features Manual Value Proposition: Provides authoritative, factory-approved procedures for accurate maintenance and repair, crucial for preserving performance and longevity. 📋 Manual Details Coverage Areas Manual Type: Factory Service Manual / Repair Manual Language: English Format: Digital (likely PDF) Page Count: Detailed page count not specified in product info, but typically comprehensive for factory manuals. 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, troubleshooting, carburetor, lubrication system, cooling system (if applicable), fuel delivery, ignition system. Transmission: Automatic CVT (Continuously Variable Transmission) maintenance, inspection, belt replacement, clutch service, roller inspection. Chassis And Suspension: Front fork (telescopic), rear shock absorber(s), swingarm, steering head bearings, wheel bearings, alignment. Brakes: Front and rear brake systems (disc brakes), brake pad replacement, caliper service, hydraulic system bleeding, brake fluid specifications. Electrical System: Wiring diagrams, lighting system, starter system, battery, charging system (alternator/stator), ignition coils, fuses, relays, instrument cluster. Fuel System: Fuel tank, fuel lines, fuel filter, carburetor (likely Mikuni or Keihin), fuel pump (if applicable). Bodywork And Trim: Fairings, seat, body panels, mirrors, lighting fixtures, fasteners, graphics. Procedures Included Maintenance: Routine checks, oil changes, filter replacements, spark plug service, chain adjustment (if applicable), brake fluid changes, coolant checks (if liquid-cooled). Troubleshooting: Diagnostic charts for common problems related to starting, running, electrical issues, and performance. Repair: Detailed step-by-step instructions for component disassembly, inspection, repair, and reassembly. Specifications And Data: Torque specifications, clearances, fluid capacities, electrical resistance values, timing settings. Technical Depth Depth Level: Comprehensive, covering from basic maintenance to complete engine and component overhauls. Suitable for professional technicians and advanced DIY mechanics. 📊 Manual Specifications File Format Digital Format: Likely PDF; optimized for digital viewing and printing. Print Quality Print Readability: High-resolution scans of original factory documentation, ensuring clarity of text and diagrams. Binding Type Physical Binding: Not applicable for digital format. If printed, expected to be bound for durability. Paper Type Physical Paper: Not applicable for digital format. Original factory manuals typically printed on durable paper stock. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, single-cylinder Displacement: 124.5 cc (approximately) Bore X Stroke: Specifications vary, but typically around 52.4mm x 57.8mm for similar Aprilia engines of this era. Cooling System: Liquid-cooled Valve Train: SOHC (Single Overhead Camshaft), 2 valves per cylinder Performance Horsepower: Approximately 10.5 - 12 HP at 8,000-8,500 RPM (varies by year and specific tuning) Torque: Approximately 10 Nm (7.4 lb-ft) at 7,000-7,500 RPM (varies) Fuel System Fuel Delivery: Carburetor (likely Mikuni VM26 or similar) Fuel Type: Unleaded gasoline, 95 RON (Octane Rating) Lubrication Oil Type: API SG or higher, SAE 10W-40 motorcycle specific engine oil Oil Capacity: Approximately 1.2 - 1.3 liters (including filter change) 🔧 Transmission Standard Type: Automatic Continuously Variable Transmission (CVT) Drive Belt Part Number: Refer to manual for specific Aprilia part number (e.g., AP8200298 or equivalent). Features Clutch Type: Automatic centrifugal dry clutch Final Drive: Gear reduction via enclosed chain or gears. 📐 Dimensions Exterior Length: Approximately 1,940 mm (76.4 in) Width: Approximately 730 mm (28.7 in) Height: Approximately 1,330 mm (52.4 in) (to top of screen) Weights Dry Weight: Approximately 140-150 kg (309-331 lbs) Gross Vehicle Weight Rating Gvwr: Approximately 300 kg (661 lbs) Cargo Underseat Storage: Sufficient for a full-face helmet (design dependent). 🛡️ Safety Features Ratings Crash Test Information: Not applicable to motorcycle/scooter safety ratings in the same way as automobiles. Focus is on rider safety features. Active Features Braking System: Front: Single hydraulic disc; Rear: Single hydraulic disc (some models may have drum rear). Tires: Tubeless, with typical sizes: Front 120/70-14, Rear 130/60-13 (verify with manual). Passive Features Lighting: Halogen headlight, LED or incandescent tail and brake lights, turn signals. Frame Construction: Steel tubular frame, designed for stability and handling. 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer and tachometer, fuel gauge, coolant temperature gauge (on some variants), odometer, trip meter, warning lights. Driver Assistance ABS Availability: ABS was generally not standard or widely available on 125cc scooters of this era. Manual will not cover ABS unless specified for a particular variant. Connectivity Connectivity Features: None, as this is a 1997-2003 era scooter with traditional mechanical and electrical systems. 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000-5,000 km or annually, whichever comes first. Refer to manual for exact interval. Spark Plug Replacement: Every 6,000-10,000 km. Check gap at 3,000 km. Air Filter Cleaning Replacement: Clean every...