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Honda XR125LK User Manual

Honda XR125LK
243 pages
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How to use this manual
How to use this manual
A Few Words About Safety
Service Information
The service and repair information contained in this manual is intended for use by qualified, professional technicians.
Attempting service or repairs without the proper training, tools, and equipment could cause injury to you or others. It could also
damage the vehicle or create an unsafe condition.
This manual describes the proper methods and procedures for performing service, maintenance and repairs. Some procedures
require the use of specially designed tools and dedicated equipment. Any person who intends to use a replacement part, service
procedure or a tool that is not recommended by Honda, must determine the risks to their personal safety and the safe operation of
the vehicle.
If you need to replace a part, use genuine Honda parts with the correct part number or an equivalent part. We strongly recommend
that you do not use replacement parts of inferior quality.
For Your Customer’s Safety
Proper service and maintenance are essential to the customer’s safety and the reliability of the vehicle. Any error or oversight while
servicing a vehicle can result in faulty operation, damage to the vehicle, or injury to others.
For Your Safety
Because this manual is intended for the professional service technician, we do not provide warnings about many basic shop safety
practices (e.g., Hot parts–wear gloves). If you have not received shop safety training or do not feel confident about your knowledge
of safe servicing practice, we recommended that you do not attempt to perform the procedures described in this manual.
Some of the most important general service safety precautions are given below. However, we cannot warn you of every
conceivable hazard that can arise in performing service and repair procedures. Only you can decide whether or not you should
perform a given task.
Important Safety Precautions
Make sure you have a clear understanding of all basic shop safety practices and that you are wearing appropriate clothing and
using safety equipment. When performing any service task, be especially careful of the following:
Read all of the instructions before you begin, and make sure you have the tools, the replacement or repair parts, and the skills
required to perform the tasks safely and completely.
Protect your eyes by using proper safety glasses, goggles or face shields any time you hammer, drill, grind, pry or work around
pressurized air or liquids, and springs or other stored-energy components. If there is any doubt, put on eye protection.
Use other protective wear when necessary, for example gloves or safety shoes. Handling hot or sharp parts can cause severe
burns or cuts. Before you grab something that looks like it can hurt you, stop and put on gloves.
Protect yourself and others whenever you have the vehicle up in the air. Any time you lift the vehicle, either with a hoist or a jack,
make sure that it is always securely supported. Use jack stands.
Make sure the engine is off before you begin any servicing procedures, unless the instruction tells you to do otherwise. This will
help eliminate several potential hazards:
Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you run the engine
Burns from hot parts or coolant. Let the engine and exhaust system cool before working in those areas.
Injury from moving parts. If the instruction tells you to run the engine, be sure your hands, fingers and clothing are out of the way.
Gasoline vapors and hydrogen gases from batteries are explosive. To reduce the possibility of a fire or explosion, be careful when
working around gasoline or batteries.
Use only a nonflammable solvent, not gasoline, to clean parts.
Never drain or store gasoline in an open container.
Keep all cigarettes, sparks and flames away from the battery and all fuel-related parts.
Improper service or repairs can create an unsafe
condition that can cause your customer to be
seriously hurt or killed.
Follow the procedures and precautions in this
manual and other service materials carefully.
Failure to properly follow instructions and
precautions can cause you to be seriously hurt or
killed.
Follow the procedures and precautions in this
manual carefully.

Table of Contents

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Honda XR125LK Specifications

General IconGeneral
BrandHonda
ModelXR125LK
CategoryMotorcycle
LanguageEnglish

Summary

How to Use This Manual

Safety Messages Explained

Explanation of safety alert symbols (DANGER, WARNING, CAUTION) and their meanings.

1. GENERAL INFORMATION

Specifications Overview

Detailed technical specifications for the motorcycle models.

Torque Values

List of standard torque values for various fasteners and components.

2. FRAME/BODY PANELS/EXHAUST SYSTEM

3. MAINTENANCE

Maintenance Schedule

Periodic maintenance schedule based on mileage and time intervals.

4. IGNITION SYSTEM

Troubleshooting Ignition System

Diagnosing common ignition system problems and their causes.

Ignition System Inspection

Procedures for inspecting the ignition system's components and circuits.

Ignition Timing Check

Procedure for checking the ignition timing using a timing light.

Ignition Coil Service

Procedure for removing, installing, and inspecting the ignition coil.

5. ELECTRIC STARTER

Troubleshooting Electric Starter

Diagnosing issues with the electric starter system.

Starter Motor Service

Procedure for removing, disassembling, inspecting, and installing the starter motor.

Starter Relay Service

Procedure for removing, inspecting, and testing the starter relay.

6. FUEL SYSTEM

Troubleshooting the Fuel System

Diagnosing common fuel system problems like starting issues and poor performance.

Carburetor Removal and Installation

Procedure for removing and installing the carburetor.

Pilot Screw Adjustment

Procedure for adjusting the pilot screw for idle speed.

7. LUBRICATION SYSTEM

Troubleshooting Lubrication System

Diagnosing issues related to engine oil level and consumption.

Oil Pump Removal

Procedure for removing the oil pump from the engine.

Oil Pump Inspection

Procedure for inspecting oil pump clearances for wear.

8. CYLINDER HEAD/VALVES

Troubleshooting Cylinder Head/Valves

Diagnosing engine performance issues related to the cylinder head and valves.

Cylinder Compression Test

Procedure for measuring cylinder compression to diagnose engine health.

Cylinder Head Cover Service

Procedure for removing and installing the cylinder head cover.

Camshaft Removal

Procedure for removing the camshaft from the cylinder head.

9. CYLINDER/PISTON

10. CLUTCH/GEARSHIFT LINKAGE

11. ALTERNATOR/STARTER CLUTCH

12. CRANKSHAFT/TRANSMISSION/KICKSTARTER

13. ENGINE REMOVAL/INSTALLATION

14. FRONT WHEEL/BRAKE/SUSPENSION/STEERING

15. REAR WHEEL/BRAKE/SUSPENSION

16. HYDRAULIC BRAKE (XR125LK/LEK)

17. BATTERY/CHARGING SYSTEM

18. LIGHTS/METER/SWITCHES

19. WIRING DIAGRAMS

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