Manual Details
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Coverage Areas
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Overall Coverage:
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Comprehensive repair and maintenance for the 1997 Aprilia Leonardo 125.
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Specific Systems:
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Engine, fuel system, cooling system, transmission, chassis, suspension, brakes, electrical system, bodywork, and troubleshooting.
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Page Count
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Page Count:
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Approximately 300 pages (estimated based on typical service manuals of this era).
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Manual Type
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Manual Type:
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Factory Service Manual / Workshop Manual
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Language
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Language:
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English
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Format
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Format:
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Digital (PDF)
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Manual Coverage
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Systems Covered
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Engine Mechanical:
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Detailed disassembly, inspection, repair, and reassembly of engine components including cylinder, piston, crankshaft, connecting rod, valves, camshaft, timing system.
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Fuel System:
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Carburetor tuning and overhaul, fuel tank, fuel lines, fuel pump inspection and maintenance.
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Cooling System:
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Radiator, cooling fan, thermostat, coolant hoses, flushing and refilling procedures.
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Transmission Drivetrain:
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Automatic transmission operation, maintenance, and common repair procedures. Drive belt inspection and replacement.
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Chassis Frame:
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Frame inspection, welding repair guidelines (if applicable), subframe maintenance.
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Suspension Steering:
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Front fork overhaul, rear shock absorber inspection and replacement, steering column and linkage maintenance.
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Brake System:
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Front and rear brake caliper service, brake pad replacement, brake fluid bleeding and replacement, master cylinder inspection.
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Electrical System:
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Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), starter motor, ignition system (CDI, spark plug), lighting system, horn, instrumentation.
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Bodywork Exterior:
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Fairing removal and installation, seat maintenance, panel fitment, luggage options (if applicable).
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Procedures Included
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Routine Maintenance:
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Oil changes, filter replacements, spark plug checks, chain/belt adjustments, brake fluid checks, tire pressure checks.
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Troubleshooting:
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Diagnostic charts and common problem-solving guides for starting issues, running problems, electrical faults, and braking anomalies.
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Major Repairs:
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Engine rebuilds, transmission overhauls, suspension component replacement, electrical system diagnosis and repair.
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Diagnostic Procedures:
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Step-by-step instructions for diagnosing faults using visual inspection, electrical testing, and component testing.
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Technical Depth
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Depth Of Coverage:
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Highly detailed, covering everything from basic adjustments to complete engine and transmission disassembly and reassembly, suitable for professional mechanics and experienced DIY enthusiasts.
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Engine Specifications
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Primary Engine
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Engine Type:
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Four-stroke, single-cylinder, liquid-cooled
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Displacement:
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124.9 cc (7.62 cubic inches)
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Bore X Stroke:
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52.4 mm x 57.9 mm (2.06 x 2.28 inches)
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Compression Ratio:
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10.8:1 (typical for this engine type)
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Performance
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Horsepower:
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Approximately 13.6 HP @ 8,500 RPM (Manufacturer specific, may vary slightly)
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Torque:
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Approximately 11.0 Nm @ 7,000 RPM (Manufacturer specific, may vary slightly)
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Fuel System
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Carburetor:
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Mikuni VM20SS or similar (specific model may vary, manual will detail)
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Fuel Capacity:
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Approx. 7.0 Liters (1.85 US gallons)
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Lubrication
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Oil Type:
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SAE 10W-40 API SG or higher (specified in manual)
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Oil Capacity:
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Approx. 0.9 Liters (0.95 US quarts) without filter change / 1.0 Liter with filter change (specified in manual)
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Dimensions
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Exterior
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Length:
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Approx. 1,950 mm (76.8 inches)
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Width:
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Approx. 740 mm (29.1 inches)
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Height:
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Approx. 1,300 mm (51.2 inches)
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Wheelbase:
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Approx. 1,340 mm (52.8 inches)
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Weights
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Dry Weight:
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Approx. 135 kg (297.6 lbs)
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Gross Vehicle Weight Rating:
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Not explicitly specified, but rider + cargo capacity is implied.
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Cargo
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Underseat Storage:
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Sufficient for one full-face helmet (typical for this class).
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Maintenance
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Service Intervals
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Engine Oil Change:
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Every 3,000 km or 6 months, whichever comes first.
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Air Filter Cleaning:
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Every 3,000 km or annually.
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Spark Plug Replacement:
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Every 6,000 km or 12 months.
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Transmission Belt Inspection:
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Every 6,000 km or 12 months.
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Brake Fluid Replacement:
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Every 2 years, regardless of mileage.
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Fluid Specifications
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Engine Oil:
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SAE 10W-40, API SG or higher.
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Coolant:
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Ethylene glycol based coolant, 50/50 mix with distilled water.
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Brake Fluid:
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DOT 4.
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Known Issues
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Carburetor Issues:
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Can be prone to clogging if fuel is not fresh or if left sitting for extended periods. Requires regular cleaning.
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Cv Belt Wear:
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CVT drive belts can wear over time and require timely replacement to prevent slipping and potential drivetrain damage.
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Electrical Connector Corrosion:
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As with many scooters of this era, electrical connectors can be susceptible to corrosion, leading to intermittent faults. Regular inspection and cleaning are recommended.
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