Market Position:
The Aprilia Leonardo 125 (2003) was positioned as a premium, stylish, and capable scooter in the 125cc segment, often favored for its Italian design and sporty performance characteristics, competing with models from Piaggio, Gilera, and Yamaha.
Competitive Analysis:
Competed against models like the Piaggio X8, Gilera Runner 125, and Yamaha X-MAX 125, offering a blend of comfort, practicality for urban commuting, and a touch of sportiness. The Rotax engine provided a strong performance benchmark.
Key Features:
Stylish Italian design, liquid-cooled 2-stroke engine known for brisk acceleration, comfortable seating, under-seat storage, good handling, and premium brand image.
Coverage Areas:
Comprehensive coverage for the Aprilia Leonardo 125 model year 2003, including mechanical, electrical, and bodywork systems.
Page Count:
Estimated 300-400 pages (typical for this type of factory service manual).
Manual Type:
Factory Service Repair Manual
Language:
English (standard for most international factory manuals, verification recommended)
Format:
Digital (PDF) likely, but could be available in printed form. Specify product format when purchasing.
Systems Covered:
Engine overhaul, fuel system, ignition system, cooling system, exhaust system, transmission, drivetrain, chassis, suspension (front and rear), braking system (front and rear), electrical system (wiring diagrams, components), body panels, instrumentation, lubrication, troubleshooting, diagnostic procedures.
Procedures Included:
Routine maintenance, component inspection, disassembly and reassembly, adjustments, repairs, troubleshooting for common faults, diagnostic flowcharts, torque specifications, electrical testing, replacement procedures for all major components.
Technical Depth:
In-depth technical information suitable for professional technicians and experienced DIY mechanics. Covers everything from basic fluid changes to complete engine rebuilds and complex electrical diagnostics.
File Format:
Typically PDF for digital versions. High-resolution scans or native digital creation ensuring clarity of diagrams and text. Searchable text is a significant advantage.
Print Quality:
For printed versions, expect high-quality paper with clear printing of text and diagrams. Professional binding is crucial for durability.
Binding Type:
For printed versions, typically saddle-stitched or perfect bound for durability and ease of use in a workshop environment.
Paper Type:
For printed versions, durable, possibly coated paper to resist grease and workshop conditions.
Primary Engine:
Liquid-cooled, 2-stroke, single-cylinder Rotax engine.
Bore X Stroke:
Typically 54 mm x 54.5 mm (refer to manual for exact specification).
Horsepower:
Approx. 15-17 HP (at crankshaft, depending on tuning and market regulations).
Torque:
Approx. 12-14 Nm (at crankshaft, depending on tuning and market regulations).
Fuel System:
Carburetor (e.g., Dell'Orto PHBH 28 or similar), with automatic choke and oil injection for 2-stroke lubrication.
Carburetor Model:
Likely Dell'Orto PHBH 28 (specific model and jetting in manual).
Lubrication Type:
Pre-mix automatic oil injection system.
Cooling System Type:
Liquid-cooled with thermostat and fan.
Ignition System Type:
Electronic ignition (CDI) with variable ignition timing.
Length:
Approx. 1990 mm (refer to manual for exact specification).
Width:
Approx. 730 mm (at handlebars, refer to manual).
Height:
Approx. 1330 mm (at windshield, refer to manual).
Dry Weight:
Approx. 130-140 kg (refer to manual for exact specification).
Fuel Tank Capacity:
Approx. 10-12 Liters (refer to manual).
Front Tire Size:
Typically 120/70-14 (refer to manual for exact spec).
Rear Tire Size:
Typically 140/60-13 (refer to manual for exact spec).
Wheel Type:
Alloy wheels.
Safety Ratings:
Not typically subjected to formal crash test ratings like cars; safety is primarily assessed through vehicle dynamics, braking performance, and component integrity as detailed in the manual.
Active Features:
Disc brakes front and rear, capable chassis and suspension for stable handling.
Passive Features:
Integrated bodywork, secure seating position.
Infotainment:
Basic instrumentation typically includes speedometer, odometer, fuel gauge, coolant temperature warning light, and turn signal indicators. No advanced infotainment features typical of modern vehicles.
Driver Assistance:
No electronic driver assistance systems present on this model.
Connectivity:
No connectivity features.
Service Intervals:
Typical intervals include: Oil change (engine oil, if applicable and clutch oil) every 3,000-5,000 km, spark plug replacement every 5,000-10,000 km, air filter cleaning/replacement every 5,000 km, variator belt inspection/replacement every 10,000-15,000 km, brake fluid flush every 2 years, coolant change every 2 years. Specific intervals are detailed in the manual.
Engine Oil Type:
For the 2-stroke system, use a high-quality 2-stroke premix oil specifically designed for liquid-cooled, high-performance engines (e.g., Motul 710, Castrol TTS, or equivalent). The manual will specify the API and JASO ratings.
Coolant Type:
Ethylene glycol-based antifreeze coolant with corrosion inhibitors. Typically a 50/50 mix with distilled water. Manual will specify brand recommendations or JIS/SAE standards.
Brake Fluid Type:
DOT 4 brake fluid is standard for most European vehicles of this era. Manual will confirm.
Gear Oil Type:
Specific gear oil for the final drive. Likely a GL-4 or GL-5 SAE 80W-90 hypoid gear oil. Manual will specify capacity and grade.
Known Issues:
Common issues can include wear on the CVT belt and rollers, carburation issues if not maintained, aging electrical connections, potential wear in the 2-stroke engine components (piston, cylinder) due to usage and maintenance, and coolant leaks from hoses or seals. The manual provides troubleshooting for these.
Part Numbers:
The manual will contain specific Aprilia part numbers for all components, crucial for accurate ordering and replacement. Example: Variator belt part numbers, spark plug types (e.g., NGK CR10EKB), filter part numbers.
Brand Heritage:
Aprilia, an Italian manufacturer, has a strong heritage in motorcycle racing and performance scooters, known for innovative design and engineering.
Model Evolution:
The Leonardo line was Aprilia's entry into the executive scooter market, aiming to blend practicality with performance and style. The 125cc model was a key variant for younger riders and European urban markets.
Production Period:
The Leonardo series was produced from the late 1990s into the early 2000s. The 2003 model represents a mature iteration of the design.
