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Compression Ratio | 9.2:1 |
---|---|
Fuel System | Carburetor |
Ignition System | CDI |
Starter | Electric and kick |
Transmission | 5-speed |
Final Drive | Chain |
Front Suspension | Telescopic fork |
Front Brake | Disc |
Rear Brake | Drum |
Length | 2, 100 mm |
Width | 820 mm |
Height | 1, 126 mm |
Seat Height | 825 mm |
Fuel Capacity | 12 liters |
Engine Type | Air-cooled, 4-stroke, single-cylinder |
Displacement | 124 cc |
Front Tire | 90/90-19 |
Rear Tire | 110/90-17 |
Bore x Stroke | 56.5 mm x 49.5 mm |
General safety advice for professional technicians performing service and repairs on the vehicle.
Important general service safety precautions and advice for performing service and repair procedures.
Key safety guidelines to ensure safe practices when performing any service task on the vehicle.
Explanation of safety alert symbols (DANGER, WARNING, CAUTION) and their meanings.
Description of the manual's structure, sections, and how to find information.
Explanation of symbols used throughout the manual to indicate specific service procedures.
Guidelines for performing service and repairs using genuine parts and tools.
Information on identifying different models covered by the manual.
Technical data and specifications for various motorcycle components.
Standard torque values for fasteners used in engine, frame, and other systems.
Locations and types of lubricants and sealants required for various components.
Diagrams illustrating the correct routing of cables and wiring harnesses.
Explanation of emission sources and their impact on the environment.
Details on the PAIR system for controlling exhaust emissions.
Steps for removing and installing the motorcycle seat.
Steps for removing and installing the side covers.
Steps for removing and installing the rear carrier.
Steps for removing and installing the rear cowl.
Steps for removing and installing the number plate bracket.
Steps for removing and installing the side shroud.
Steps for removing and installing the fuel tank.
Steps for removing and installing the front visor.
Steps for removing and installing the front fender.
Steps for removing and installing the drive sprocket cover.
Steps for removing and installing the exhaust pipe and muffler.
Detailed schedule for periodic maintenance tasks based on mileage or time.
Procedure for cleaning the fuel strainer screen.
Checking throttle grip operation and free play.
Procedure for inspecting and replacing the air cleaner element.
Inspection, removal, and installation of the spark plug.
Procedure for inspecting and adjusting valve clearance.
Procedure for checking engine oil level and performing an oil change.
Steps for adjusting drive chain slack, cleaning, and lubricating.
Procedures for checking brake fluid level and brake pad/shoe wear.
Procedure for inspecting and adjusting clutch lever free play.
Inspection of wheel bearings, tires, and spoke tension.
Procedure for checking the condition of steering head bearings.
Visual identification of ignition system components on the motorcycle.
Electrical schematic illustrating the ignition system's connections.
Step-by-step guide for diagnosing and resolving ignition system problems.
Methods for inspecting ignition coil primary peak voltage and system connections.
Procedure for checking the engine's ignition timing using a timing light.
Visual identification of electric starter system components.
Electrical schematic of the electric starter system.
Step-by-step guide for diagnosing and resolving electric starter problems.
Procedures for inspecting the starter motor for wear and damage.
Checking starter relay operation, circuits, and connections.
Procedure for inspecting the neutral indicator diode.
Visual overview of the motorcycle's fuel system components.
General notes and precautions for servicing the fuel system.
Common fuel system problems and their potential causes and solutions.
Steps for removing and installing the air cleaner housing.
Procedures for carburetor removal, disassembly, and assembly.
Procedure for adjusting the pilot screw for optimal idle operation.
Diagram illustrating the flow of lubricating oil throughout the engine.
Common problems related to engine oil level, consumption, and contamination.
Procedures for removing, installing, disassembling, and inspecting the oil pump.
Visual overview of the cylinder head, valves, camshaft, and related parts.
General notes and precautions for servicing the cylinder head and valve train.
Diagnosing problems related to compression, smoke, noise, and idle.
Procedure for performing a cylinder compression test.
Steps for removing and installing the cylinder head cover.
Procedures for camshaft removal, inspection, and installation.
Procedures for removing, disassembling, and assembling the camshaft holder.
Steps for removing and installing the cylinder head.
Steps for disassembling the cylinder head, including valve removal.
Procedures for replacing valve guides.
Procedures for refacing valve seats.
Visual overview of cylinder and piston components.
General notes and precautions for cylinder and piston servicing.
Common cylinder and piston issues like low compression or noise.
Steps for removing and installing the cylinder.
Steps for removing and installing the piston and piston rings.
Visual overview of clutch, gearshift linkage, and kickstarter components.
General notes on clutch, gearshift, and kickstarter servicing.
Common problems related to clutch operation and gear shifting.
Steps for removing and installing the right crankcase cover.
Procedures for clutch removal, installation, and assembly.
Procedures for gearshift linkage removal, inspection, and installation.
Steps for removing and installing the primary drive gear.
Visual overview of alternator, starter clutch, and related components.
Diagnosing issues when the starter motor turns but the engine does not.
Steps for removing and installing the left crankcase cover.
Procedures for removing and installing the stator and ignition pulse generator.
Procedures for removing and installing the flywheel and starter clutch.
Steps for disassembling and assembling the starter clutch.
Visual overview of crankshaft, transmission, and kickstarter components.
General notes and precautions for servicing the crankshaft and transmission.
Diagnosing problems related to noise, shifting, and gear jumping.
Steps for separating and assembling the crankcase halves.
Procedures for disassembling and assembling the transmission.
Procedures for crankshaft removal, installation, and bearing replacement.
Steps for removing and installing the kickstarter idle gear.
Procedures for kickstarter removal, installation, and disassembly.
Visual overview of components and torques related to engine removal/installation.
General notes and precautions for engine removal and installation.
Detailed steps for safely removing the engine from the motorcycle frame.
Steps for correctly installing the engine into the motorcycle frame.
Visual overview of front wheel, brake, suspension, and steering components.
General notes on servicing and safety precautions for front systems.
Diagnosing problems with steering, wheel, suspension, and front brake.
Procedures for removing and installing the handlebar.
Steps for removing and installing the front wheel.
Procedures for disassembling and assembling the front drum brake.
Procedures for fork removal, disassembly, and assembly.
Procedures for removing, installing, and replacing steering stem components.
Procedure for measuring and adjusting steering bearing preload.
Visual overview of rear wheel, brake, and suspension components with torques.
General notes on servicing and safety precautions for rear systems.
Diagnosing problems with rear wheel, suspension, and brake.
Steps for removing and installing the rear wheel.
Procedures for replacing rear wheel bearings.
Steps for disassembling and assembling the rear drum brake.
Procedures for removing and installing the brake pedal.
Procedures for removing the shock absorber and replacing needle bearings.
Procedures for removing, disassembling, and assembling the swingarm.
Visual overview of hydraulic brake components with torques.
General notes on servicing hydraulic brake system and safety.
Diagnosing common hydraulic brake problems like soft levers or drag.
Steps for draining, filling, and bleeding the hydraulic brake system.
Steps for removing and installing brake pads.
Procedures for removing, installing, disassembling, and assembling the master cylinder.
Procedures for removing, installing, disassembling, and assembling the brake caliper.
Visual identification of battery and charging system components.
Electrical schematic of the battery and charging system.
General notes on battery care, charging, and system servicing safety.
Step-by-step guide for diagnosing battery and charging system issues.
Procedures for battery removal, installation, testing, and charging.
Methods for inspecting current leakage and charging voltage.
Procedures for inspecting and replacing the regulator/rectifier.
Procedure for measuring the resistance of the alternator charging coil.
Visual identification of lighting, meter, and switch components.
General notes on servicing lights, meters, and switches, including safety.
Procedures for inspecting lighting circuits and components.
Steps for replacing headlight, position, brake, tail, license, and turn signal bulbs.
Procedures for removing, installing, disassembling, and assembling the combination meter.
Procedures for inspecting, removing, and installing the ignition switch.
Procedure for inspecting handlebar switches for continuity.
Checking the operation of front and rear brake light switches.
Procedures for inspecting, removing, and installing the neutral switch.
Procedure for inspecting the sidestand switch for continuity.
Steps for inspecting the turn signal relay and circuit.
Detailed wiring diagram for XR125LEK models (DK, I LA types).
Detailed wiring diagram for XR125LEK models (III LA, CO types).
Detailed wiring diagram for XR125LEK models (NZ type).
Detailed wiring diagram for XR125LK models (DK type).
Detailed wiring diagram for XR125LK models (III LA type).
Detailed wiring diagram for the XL125LK model.