To Next PageTo Next PageWhy does the front wheel wobble on my APRILIA RS 125?
If your APRILIA Motorcycle's front wheel wobbles, here's what might be causing it: * Warped wheel rim: Replace it. * Worn front wheel hub bearings: Replace them. * Defective tyre or tyre not meeting specification: Replace it. * Loose wheel spindle nut: Tighten it. * Front fork oil not meeting specification: Adjust it.
What causes hard steering in my APRILIA Motorcycle?
If you are experiencing hard steering on your APRILIA Motorcycle, consider the following: * Steering adjusting ring nut overtightened: Adjust it. * Steering bearing damaged: Replace it. * Steering stem distorted: Replace it. * Tyre underinflated: Adjust it.
What causes unsteady charge in my APRILIA RS 125?
If the charge is unsteady on your APRILIA Motorcycle, it could be due to: * Worn terminal insulator causing transient short circuits due to vibration: Repair or replace it. * Short circuits inside the generator: Replace it. * Faulty regulator/rectifier: Replace it.
Why my APRILIA RS 125 Motorcycle engine does not start?
If your APRILIA Motorcycle engine doesn't start or is hard to start, several issues could be the cause: * The cylinder or piston rings may be exceedingly worn, requiring replacement. * The piston ring might be sticking in its groove, needing repair or replacement. * The crankcase, cylinder, or cylinder head gasket could be leaking, also requiring repair or replacement. * A loose spark plug needs tightening. * A broken, cracked, or damaged piston should be replaced. * A worn crankshaft seal should be replaced. * A foul spark plug should be replaced. * A wet spark plug needs cleaning and drying. * A defective coil should be replaced. * A high-tension cable that's interrupted or shorted should be replaced. * An ignition system fault needs repair or replacement.
Why does the brake lever have excessive travel on my APRILIA Motorcycle?
If the brake lever on your APRILIA Motorcycle has excessive travel, it could be due to: * Air in the hydraulic circuit: Bleed the circuit. * Low brake fluid level: Top up to the specified level and bleed the circuit. * Brake fluid does not meet specification: Change using specified brake fluid.
Why do spark plugs develop carbon build-up too quickly in my APRILIA RS 125 Motorcycle?
If the spark plugs in your APRILIA Motorcycle develop excessive carbon build-up too quickly, consider the following: * Carburetion too rich: Adjust the carburetor. * Idling speed set too high: Adjust the carburetor. * Fuel does not meet specification: Change the fuel. * Air cleaner dirty: Clean it. * Spark plug heat rating too low: Replace with a higher rating spark plug.
What causes the generator of my APRILIA Motorcycle to overcharge the battery?
If the generator in your APRILIA Motorcycle is overcharging the battery, check the following: * Short circuit inside the battery: Replace the battery. * Damaged or faulty regulator/rectifier: Replace it. * Erratic regulator/rectifier ground: Clean and tighten the ground terminals.
Why do the brakes squeal on my APRILIA RS 125?
If your APRILIA Motorcycle brakes are squealing, several factors could be responsible: * Vitrified contact surfaces of brake pads: Sand the brake pad surfaces. * Inverted brake pads: Install them correctly. * Damaged wheel hub bearing: Replace it. * Loose front or rear wheel spindle: Tighten to the specified torque. * Worn brake pads: Replace them. * Foreign matter suspended in brake fluid: Change the brake fluid. * Obstructed return hole of the master cylinder: Dismantle and clean the brake master cylinder.
What causes the generator of my APRILIA RS 125 to undercharge the battery?
If your APRILIA Motorcycle generator is undercharging the battery, look for these possible causes: * Terminals short-circuiting, becoming interrupted, or working themselves loose: Repair or tighten them. * Generator stator coil discharging to earth or interrupted: Replace it. * Faulty regulator/rectifier: Replace it. * Faulty battery: Replace it.
What causes overheating in APRILIA Motorcycle?
If your APRILIA Motorcycle engine overheats, consider these potential causes: * Insufficient coolant: Top it up. * Radiator fins obstructed by dirt or debris: Clean them. * Faulty thermostat jammed in the closed position: Replace it. * Obstructed coolant passages: Clean them. * Air in the cooling circuit: Bleed the circuit. * Faulty coolant pump: Replace it. * Coolant used does not meet specification: Change the coolant.
General| Displacement | 124.8 cc |
|---|---|
| Transmission | 6-speed |
| Front Suspension | Upside-down fork |
| Rear Suspension | Monoshock |
| Front Brake | Single disc |
| Rear Brake | Single disc |
| Dry Weight | 114 kg |
| Fuel System | Carburetor |
| Frame | Aluminum perimeter frame |
| Engine Type | Single cylinder, 2-stroke |
Introduction to the manual, its purpose, and intended audience.
Lists available reference manuals and their part numbers.
Explains common abbreviations, symbols, and conventions used in the manual.
Describes the structure and organization of the manual.
Details safety conventions, warnings, and precautions.
Outlines basic rules and safety guidelines for maintenance.
Identifies hazardous materials and components with warnings.
Provides guidelines for engine and vehicle break-in procedures.
Explains the location of frame and engine serial numbers.
Advises on using appropriate tools and original spare parts.
Lists recommended products and lubricants for maintenance.
Instructions for using front and rear service stands.
Explains the importance of routine maintenance for vehicle performance.
A comprehensive chart detailing maintenance intervals for various parts.
Identifies all points requiring lubrication and the type of lubricant.
Describes the functions and operation of the multifunction computer display.
General guidelines for tightening various fasteners.
Specific torque settings and fastener details for different motorcycle components.
Information on battery types, maintenance, inspection, and charging.
Checks and maintenance for various electrical components.
Procedures for checking, cleaning, and replacing spark plugs.
Instructions for checking, cleaning, and changing the air cleaner element.
Checks and replacement intervals for fuel, oil, brake, and coolant tubes.
Procedures for lifting and removing the fuel tank.
Steps for checking and topping up the coolant level.
Instructions for adjusting the clutch lever free play.
Procedures for checking and topping up front and rear brake fluid levels.
How to adjust the rear brake pedal height for rider comfort.
Procedure for adjusting the gearbox lever height.
Checking throttle operation and adjusting cable play.
Inspections and adjustments related to the steering and front fork.
Inspection and adjustment of the rear suspension and swinging arm.
Checks for front and rear wheels, including bearings and balancing.
Advice on tyre condition, wear, inflation, and replacement.
Procedures for tightening exhaust manifold nuts.
Inspection, cleaning, lubrication, and adjustment of the drive chain.
Step-by-step guide for removing the engine oil tank.
Procedure for removing the motorcycle's fuel tank.
Safety precautions and steps for draining the fuel tank.
How to remove the fuel cock from the fuel tank.
Steps for removing the airbox and air cleaner assembly.
Procedure for removing the carburetor from the intake manifold.
Diagram illustrating the layout of the cooling system components.
Instructions for draining and refilling the cooling system with new coolant.
Steps for removing and installing the radiator.
Procedure for removing and replacing the coolant thermistor.
Steps for removing and installing the thermostat.
Procedure for removing and installing the expansion reservoir.
Steps for removing the exhaust pipe and flange.
Technical specifications and general information about the engine.
Lists engine components that can be removed without removing the engine.
Detailed procedure for removing the engine from the motorcycle frame.
Step-by-step guide for reinstalling the engine into the motorcycle frame.
Details on RAVE valve operation and specifications.
Procedure for removing the RAVE exhaust valve assembly.
Inspection of RAVE valve components like seals and exhaust valve.
Steps for installing the RAVE exhaust valve assembly.
Exploded view diagram of the chassis components.
Procedure for removing and installing the rider's seat.
Steps for removing the right and left side fairings.
Procedure for removing the air dam.
Steps for removing the front fairing and headlight assembly.
Procedure for removing the windscreen.
Steps for removing the fuel tank filler cap.
Procedure for removing the fuel tank fairing.
Steps for removing the seat subframe cover.
Procedure for removing the tail section and passenger seat.
Steps for removing the front mudguard.
Procedure for removing the rear mudguard.
Steps for removing the seat end cover.
Procedure for removing the number plate bracket and associated lights.
Steps for removing the chain guard.
Procedure for removing the upper chain slider.
Steps for removing the lower chain slider.
Procedure for removing the air scoop.
Steps for safely removing the motorcycle battery.
Procedure for removing the Engine Control Unit (ECU).
Steps for removing the voltage rectifier.
Procedure for removing the right-hand handlebar light switch.
Steps for removing the left-hand handlebar light switch.
Procedure for removing the ignition switch and steering lock.
Steps for removing the instrument panel and its components.
Procedure for removing the headlight assembly.
Steps for removing the front direction indicators.
Procedure for removing the rear direction indicators.
Steps for removing the warning horn.
Procedure for removing the tail light assembly.
Steps for removing the throttle control assembly from the handlebar.
Procedure for removing the throttle cable from the pulley to the oil pump.
Steps for removing the front brake control assembly.
Steps for removing the front brake control assembly.
Procedure for removing the clutch cable.
Steps for removing the gear shift lever.
Procedure for removing the rear brake lever.
Steps for removing the left and right handlebars.
Procedure for removing the instrument panel subframe.
Steps for removing the seat latch mechanism.
Procedure for removing the right rider footpeg bracket.
Steps for removing the left rider footpeg bracket.
Procedure for removing the rider footpeg.
Steps for removing the passenger footpeg brackets.
Procedure for removing the passenger footpeg.
Steps for removing the side stand assembly.
Procedure for removing the seat subframe.
Detailed steps for removing the motorcycle frame.
Procedures for installing the motorcycle frame.
Exploded view diagram of the front wheel components.
Steps for removing the front wheel assembly.
Procedures for disassembling the front wheel hub and components.
Inspection of front wheel components like bearings, seals, spindle, and rim.
Steps for refitting the complete front wheel assembly.
Exploded view diagram of the rear wheel components.
Steps for removing the rear wheel assembly.
Procedures for disassembling the rear wheel hub and components.
Steps for removing and refitting the final drive sprocket assembly.
Inspection of rear wheel components like bearings, seals, spindle, and rim.
Steps for refitting the complete rear wheel assembly.
Diagram illustrating the front brake system components.
Procedure for replacing the front brake pads.
How to inspect the front brake disc for wear and run-out.
Steps for removing the front brake disc.
Diagram illustrating the rear brake system components.
Procedure for replacing the rear brake pads.
How to inspect the rear brake disc for wear and run-out.
Steps for removing the rear brake disc.
Procedure for removing the rear brake master cylinder.
Diagram illustrating the steering system components.
Steps for removing the headstock assembly.
Inspection of steering components like bearings and seals.
Procedures for reassembling the headstock.
Exploded view diagram of the front fork components.
Steps for removing the fork stanchion tubes and sliders.
Procedures for disassembling the fork stanchion tubes and sliders.
Steps for changing the front fork oil.
Inspection of fork stanchion tubes and sliders.
Procedures for assembling stanchion tubes and sliders.
Steps for installing stanchions and sliders back into the yokes.
Detailed procedure for removing the rear swinging arm.
Steps for disassembling the swinging arm bearings and components.
Inspection of swinging arm components like bearings, seals, and spindle.
Procedures for reassembling the swinging arm.
Steps for installing the swinging arm onto the frame.
Procedure for removing the rear shock absorber.
Steps for installing the rear shock absorber.
Procedure for removing the rear suspension linkage assembly.
Steps for disassembling the rear suspension linkage system.
Inspection of rear suspension linkage components.
Procedure for removing the drive chain.
Steps for refitting the drive chain.
Identifies the location of major electrical components on the motorcycle.
Introduction to the electrical system section.
Information on battery installation, maintenance, inspection, and testing.
Details of the ignition system, troubleshooting, and tests.
Information on the charge system layout, testing, and troubleshooting.
Details of the starter circuit, troubleshooting, and tests.
Information on sensors, rev counter circuit, and testing.
Explains visual and acoustic signals like indicators and horn.
Diagram and troubleshooting for the brake lights circuit.
Diagram and troubleshooting for the motorcycle's light circuits.
Details of the RAVE valve control unit and solenoid circuit.
Explains the logic circuit for the stand and neutral switches.
Procedures for replacing parking, high beam, low beam, tail, and indicator bulbs.
Instructions on how to check and replace fuses.
Procedure for adjusting the headlight beam height.
Comprehensive wiring diagram for the motorcycle's electrical system.
Introduction to the troubleshooting section.
Common engine problems, their causes, and remedies.
Common carburetor issues, causes, and solutions.
Troubleshooting for engine overheating or failure to warm up.
Common electrical system problems and their fixes.
Troubleshooting steps for battery issues like rapid discharge.
Common brake problems, causes, and remedies.
Common chassis-related problems like steering and suspension issues.
Diagrams showing the routing of brake, fuel, oil, clutch, and throttle cables/hoses.
