APRILIA 1997 Leonardo 150 User Manual

Safety precautions for fuel, lubricants, and coolant handling and use.

General safety recommendations and procedures for repairs and maintenance.

Technical specifications for dimensions, engine, capacities, and chassis.

Recommended lubricants for engine oil, fork oil, grease, brake fluid, and coolant.

Aprilia recommends following the indicated intervals for periodic service on vehicle components.

Maintenance schedule detailing checks, cleaning, adjustments, and replacements at various intervals.

Procedure for checking, cleaning, and replacing the spark plug.

Steps to check and top up the engine oil level.

Step-by-step guide for changing the engine oil and oil filter.

Information and procedures related to the disc brake system.

How to check the brake fluid level.

How to check the wear of brake pads.

Procedure for bleeding the brake system to remove air.

How to check and top up the coolant level.

Steering system checks and adjustments.

Wheel and tire inspection and maintenance.

Checking tire pressure, tread depth, and condition.

Table listing torque specifications for various screws and nuts.

Step-by-step instructions for removing the engine from the chassis.

Description of the fuel tank and pump system, including modifications.

Checks for fuel supply system integrity, including fuel flow.

Fuel pump removal and disassembly procedures.

Carburettor identification and technical characteristics.

Technical characteristics of the main carburetor components.

Procedure for removing the carburettor from the vehicle.

Procedure for disassembling the carburettor.

Checks for carburettor components integrity and efficiency.

Checks for charging system voltage, alternator operation, and continuity.

Ignition system wiring diagram and coil checks.

How to check the high voltage coil.

How to check the pick-up sensor.

How to check the CDI unit for continuity and resistance.

Checking the electrical system via the CDI unit connector.

How to check the thermistor's operation.

Electrofan wiring diagram and operational checks.

How to check the electrofan's operation.

How to check the thermal switch's operation.

Fuel level circuit wiring diagram and indicator checks.

How to check the fuel level gauge unit.

Battery activation, checks, and warranty conditions.

Steps for activating a new battery, including electrolyte filling and charging.

Procedures for changing headlight, rear light, and indicator bulbs.

Procedure for removing the dashboard assembly.

Steps for removing and handling the battery.

Front wheel removal and maintenance procedures.

Rear wheel removal and maintenance procedures.

General information and references for the front brake system.

General information and references for the rear brake system.

How to replace rear brake pads.

Front fork components and oil level check.

Rear suspension adjustment and shock absorber removal.

Troubleshooting guide for engine, carburettor, radiator, electrical system, battery, brakes, and chassis.

Brake system malfunctions, symptoms, possible causes, and remedies.

Electrical wiring diagram.

Updated information on air filter maintenance.

Updated procedure for replacing fuses.

Updated electrical wiring diagram for Leonardo 125.