Target Audience:
Commuters, urban riders, riders seeking practical and comfortable transport.
Key Competitors Era:
Honda Pantheon, Yamaha Majesty, Suzuki Burgman 125, Italjet Formula 125.
Design Philosophy:
Comfortable, practical, and stable maxi-scooter design with car-like features for urban and light touring use.
Storage Capacity:
Generous under-seat storage, typically accommodating a full-face helmet and more.
Riding Comfort:
Spacious seating position, good wind protection from the fairing and windshield.
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Troubleshooting, Diagnostics
Estimated Page Count:
200-300 (typical for comprehensive service manuals)
Manual Type:
Workshop Manual / Service Manual
Language:
English (assumed, common for international markets)
Format:
Digital (PDF) or Printed
Engine Mechanical:
Engine disassembly, assembly, cylinder head, piston, crankshaft, lubrication system, cooling system, fuel system (carburetor/injection) diagnostics and repair.
Engine Electrical:
Ignition system, starting system, charging system (alternator/stator, regulator/rectifier), ECU diagnostics, sensor testing (TPS, MAP, temperature sensors).
Transmission Drivetrain:
Variator system, clutch assembly, transmission case, final drive maintenance and repair.
Chassis Suspension:
Front forks, rear shock absorber, swingarm, wheel bearings, steering system overhaul and adjustment.
Braking System:
Front and rear brake caliper service, master cylinder overhaul, brake line replacement, bleeding procedures, disc and pad replacement.
Electrical System:
Wiring diagrams, lighting system, horn, indicators, battery maintenance, fuse identification, starter solenoid, key switch.
Fuel System:
Carburetor (e.g., Keihin, Dell'Orto) adjustment, cleaning, and rebuilding. Fuel pump and filter service. Fuel tank maintenance.
Exhaust System:
Exhaust pipe and muffler inspection, gasket replacement, heat shield maintenance.
Bodywork Trim:
Panel removal and installation, fairing repair, seat maintenance, storage compartment access.
Routine Maintenance:
Oil changes, filter replacements (oil, air), spark plug replacement, chain/belt adjustment (if applicable), brake pad inspection, tire pressure checks.
Troubleshooting:
Systematic diagnostic flowcharts for common problems (e.g., starting issues, poor running, electrical faults).
Repair Procedures:
Step-by-step instructions for major component overhauls, including engine rebuilds, transmission servicing, and suspension component replacement.
Special Tools:
Identification and usage of specific tools required for Aprilia Leonardo 125 maintenance and repair.
Depth:
Comprehensive: Covers everything from basic adjustments to complete engine and chassis rebuilds, including detailed electrical schematics and diagnostic procedures.
Digital Searchability:
Yes, fully searchable text content.
Print Quality:
High-resolution images and clear text (for printed versions).
Binding Type:
Perfect bound or spiral bound (for printed versions, facilitating lay-flat use).
Paper Type:
Durable, coated paper to withstand workshop environments (for printed versions).
Engine Type:
Four-stroke, liquid-cooled, single-cylinder
Displacement:
124.9 cc (approximate, based on typical 125cc engines of the era)
Bore X Stroke:
Typically around 52.4 mm x 57.8 mm (specific data requires model year breakdown)
Compression Ratio:
Approximately 11.0:1 to 11.5:1
Horsepower Output:
Approximately 14-15 HP at 8,000-9,000 RPM
Torque Output:
Approximately 11-12 Nm at 6,000-7,000 RPM
Fuel Delivery:
Carburetor (likely Mikuni or Keihin 28-30mm) or early electronic fuel injection (EFI) on later models.
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/2
Oil Type:
SAE 10W-40, API SG or higher, JASO MA certified motorcycle oil.
Oil Capacity:
Approximately 1.1 - 1.3 liters with filter change.
Cooling Medium:
Liquid (coolant mixture: 50% ethylene glycol antifreeze and 50% distilled water).
Ignition Type:
Electronic ignition (CDI or TCI).
Spark Plug Type:
NGK CR8E or similar (check specific model year).
Safety Features:
Combined braking system (linking front and rear brakes) on some variants, reflective elements on bodywork.
Braking System Front:
Hydraulic disc brake (single or dual disc depending on spec).
Braking System Rear:
Hydraulic disc brake (single disc).
Suspension Front:
Telescopic forks (e.g., 35mm stanchions).
Suspension Rear:
Unit swingarm with adjustable twin shock absorbers.
Lighting System:
Halogen headlight, LED or incandescent taillight and brake light, indicator lights.
Dashboard Features:
Analog speedometer, tachometer (on some models), fuel gauge, coolant temperature warning light, oil pressure warning light, turn signal indicators.
Braking Aid:
Combined braking system on some variants, enhancing stopping power and stability.
Oil Change Interval:
Every 3,000-5,000 km or annually, whichever comes first.
Oil Filter Replacement Interval:
Every oil change (if applicable) or every second oil change.
Air Filter Cleaning Replacement:
Inspect every 5,000 km, clean if necessary, replace every 10,000-15,000 km.
Spark Plug Replacement:
Every 10,000-12,000 km.
Variator Belt Inspection:
Inspect every 10,000 km, replace typically between 15,000-25,000 km depending on wear.
Coolant Type:
50/50 mixture of ethylene glycol antifreeze and distilled water.
Gear Oil Type:
API GL-4, SAE 80W-90 gear oil.
Common Wear Items:
Variator rollers and belt, brake pads, steering bearings, rear shock absorber bushings.
Potential Electrical Faults:
Voltage regulator failure, stator issues, wiring harness degradation over time.
Fuel System Concerns:
Carburetor gumming if fuel sits for extended periods, fuel filter clogging.
Manufacturer Origin:
Italy
Manufacturer Specialty:
Renowned for sport motorcycles, but diversified into scooters and touring bikes.
Introduction Year:
The Leonardo line was introduced in the mid-1990s, with the 125cc model being a significant part of its early success.
Design Influences:
Embraced the maxi-scooter trend, aiming to offer premium features and comfortable commuting.
Manufacturing Location:
Primarily Italy, but production sites may have shifted over time due to parent company acquisitions (e.g., Piaggio Group).
