Engine Variants Covered:
125cc, 150cc
Model Years Covered General:
Varies by specific production run, but generally covers models from the late 1990s through early 2000s. Specific year ranges would be detailed within the manual itself.
Chassis Code General:
Leonardo, Scarabeo (specific model designations might vary, e.g., Leonardo ST, Scarabeo 400, etc., but this manual focuses on the 125-150 engine variants.)
Product Category:
Scooter Service and Repair Manual
Target Audience:
Aprilia Leonardo Scarabeo 125-150 owners, independent repair shops, motorcycle technicians.
Value Proposition:
Provides factory-level technical information for essential engine maintenance and repair, often more detailed than generic aftermarket manuals.
Visuals:
Hundreds of high-quality photos illustrating disassembly and reassembly procedures, crucial for complex engine work.
Authenticity:
Genuine factory service information ensures accuracy and adherence to Aprilia's specifications.
Engine Mechanical:
Cylinder head, valves, camshafts, piston, connecting rod, crankshaft, oil pump, cooling system (engine-related aspects), lubrication system.
Engine Electrical Ignition:
Spark plug, ignition coil, CDI unit, wiring related to ignition system (diagnosis and component testing).
Fuel System Carburetor:
Carburetor disassembly, cleaning, adjustment, and reassembly. Fuel lines and filters pertaining to the carburetor. (Likely Keihin or similar carburetor models.)
Disassembly:
Complete engine disassembly procedures, component by component.
Reassembly:
Detailed engine reassembly instructions, including torque specifications and assembly sequences.
Maintenance:
Engine oil change, coolant flush and refill, spark plug replacement, air filter cleaning/replacement, valve clearance adjustment (if applicable to the specific engine variant).
Troubleshooting:
Diagnosis of common engine problems, performance issues, starting difficulties, and abnormal noises. Likely includes diagnostic charts or flowcharts.
Depth Of Coverage:
Comprehensive, covering internal engine components and their repair. Suitable for experienced mechanics and advanced DIY enthusiasts.
PDF Quality:
High Quality, Fully Printable
Searchability:
Likely text-searchable PDF, aiding in quick information retrieval.
Print Readability:
Designed for clear reproduction, with crisp text and well-defined images.
Binding:
Digital PDF (no physical binding; user can print and bind as needed)
Recommended Paper Type:
Standard copier paper for printing; heavier weight stock recommended for cover.
Engine Type:
4-stroke, liquid-cooled, single-cylinder (typical configuration for this era/model, although air-cooled variants may exist; manual will specify).
Displacement:
125cc, 150cc (as indicated by the product name).
Horsepower 125Cc Estimate:
Typically in the range of 12-15 HP (actual figures require consulting specific model year specifications not provided here).
Horsepower 150Cc Estimate:
Typically in the range of 14-17 HP (actual figures require consulting specific model year specifications not provided here).
Torque 125Cc Estimate:
Estimated 8-10 Nm (actual figures require consulting specific model year specifications not provided here).
Torque 150Cc Estimate:
Estimated 9-11 Nm (actual figures require consulting specific model year specifications not provided here).
Fuel Delivery:
Carburetor (e.g., Keihin CV carburetor, specific model to be confirmed in manual).
Fuel Type:
Unleaded gasoline (typically 91-95 octane rating).
Cooling Method:
Liquid-cooled (most common for Leonardo/Scarabeo 125-150 of that era). Manual will detail radiator, coolant, and pump service.
Oil Type Recommendation:
High-quality 4-stroke scooter oil, typically SAE 10W-40 or 15W-50, meeting JASO MA standards. Manual will specify precise grade and API classification.
Oil Capacity Estimate:
Approximately 0.8 - 1.0 liters. Manual will provide exact capacity and procedure for checking level.
Transmission Type:
Automatic CVT (Continuously Variable Transmission) with dry clutch.
Optional Transmissions:
N/A for this model range.
Transmission Components Covered:
Variator, drive belt, torque converter, clutch assembly, drive and driven pulleys. (While not strictly 'engine' parts, they are integral to the powertrain and likely covered in a comprehensive service manual).
Safety Features General:
Standard scooter safety features for its era (e.g., disc brakes, stable chassis). This manual focuses on mechanical repair, not active safety system diagnostics.
Active Safety Systems:
Braking system (front and rear disc brakes), tire maintenance and specifications (covered indirectly via wheel service, although this manual is engine-focused).
Infotainment System:
Basic analog instrumentation (speedometer, odometer, fuel gauge, warning lights). No advanced infotainment features expected for this model's era.
Driver Assistance Features:
N/A for engine-focused manual. Basic safety systems include lighting and braking.
Connectivity Features:
N/A.
Engine Oil Change Interval:
Typically every 3,000 - 5,000 km or annually. Manual will provide precise intervals based on operating conditions.
Air Filter Maintenance:
Check/clean every 2,000 - 3,000 km, replace as needed. Manual will detail specific procedure.
Spark Plug Replacement:
Typically every 6,000 - 10,000 km. Manual will specify plug type and gap.
Transmission Belt Inspection:
Inspect for wear and damage every 5,000 - 10,000 km. Replacement interval varies but often around 15,000 - 20,000 km. Manual will specify inspection and replacement criteria.
Engine Oil Grade:
SAE 10W-40 or 15W-50, API SG/SH/SJ or higher, JASO MA/MA2.
Coolant Type:
Ethylene glycol-based antifreeze coolant, typically a 50/50 mix with distilled water. Manual will specify Aprilia's recommended coolant or equivalent.
Brake Fluid Type:
DOT 4 recommended for most scooters of this era. Manual will specify the exact type and change interval.
Common Engine Wear Items:
Variator rollers (wear/flat spotting), drive belt (cracking/stretching), carburetor jets (clogging due to infrequent use or poor fuel quality), water pump seals (leaks).
Performance Degradation Causes:
Dirty air filter, fouled spark plug, incorrect valve clearances, worn CVT components, gummed-up carburetor.
Manufacturer Heritage:
Aprilia is an Italian manufacturer with a strong heritage in performance motorcycles and scooters, known for sporty design and engineering.
Scarabeo Lineage:
The Scarabeo line is Aprilia's well-established scooter platform, known for comfort, practicality, and often a more classic or elegant design compared to more aggressive sport scooters. The Leonardo was a distinct model line that shared some platform elements or design philosophies with the Scarabeo lineage, particularly in the engine options.
Production Period General:
The Leonardo and Scarabeo 125-150 models were prominent in the late 1990s and early 2000s, representing Aprilia's offerings in the popular displacement segments.
