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Yamaha WR125R User Manual

Yamaha WR125R
88 pages
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PANTONE285CVC
WR125R
WR125X
OWNER’S MANUAL
22B-F8199-E0
Read this manual carefully before operating this vehicle.

Table of Contents

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Yamaha WR125R Specifications

General IconGeneral
Engine TypeLiquid-cooled, 4-stroke, SOHC, 4-valve
Displacement124.7cc
Bore x Stroke52.0 mm x 58.6 mm
Compression Ratio11.2:1
Fuel SystemFuel Injection
Ignition SystemTCI
TransmissionConstant mesh, 6-speed
Final DriveChain
Front SuspensionTelescopic forks
Rear SuspensionSwingarm (link suspension)
Rear BrakeHydraulic single disc, Ø220 mm
Front Tyre80/90-21 M/C 48P
Rear Tyre110/80-18 M/C 58P
Overall Length2, 180 mm
Overall Width835 mm
Overall Height1, 190 mm
Seat Height930 mm
Wheelbase1, 430 mm
Fuel Tank Capacity8.5 litres
Lubrication SystemWet sump
Starter SystemElectric
Oil Tank Capacity1.15 litres
Maximum Power11 kW (15 PS) @ 9, 000 rpm
Maximum Torque12.2 Nm (1.2 kg-m) @ 8, 000 rpm

Summary

Introduction

Important Manual Information

Safety Information

Be a Responsible Owner

Owner's responsibility for safe and proper vehicle operation and operator requirements.

Safe Riding

Guidance on safe riding practices, visibility, and accident avoidance.

Protective Apparel

Importance of wearing protective gear like helmets, jackets, and boots.

Avoid Carbon Monoxide Poisoning

Hazards of carbon monoxide from exhaust and precautions to avoid poisoning.

Loading

Guidelines for adding accessories or cargo to the motorcycle safely.

Genuine Yamaha Accessories

Information on genuine Yamaha accessories and their benefits.

Aftermarket Parts, Accessories, and Modifications

Risks of aftermarket parts and modifications affecting vehicle safety.

Aftermarket Tires and Rims

Guidelines on selecting and using aftermarket tires and rims.

Description

Left View

Identification of components visible from the left side of the motorcycle.

Right View

Identification of components visible from the right side of the motorcycle.

Controls and Instruments

Identification and function of various controls and instruments on the handlebar.

Instrument and Control Functions

Main Switch/Steering Lock

Operation and function of the main switch and steering lock.

Indicator and Warning Lights

Explanation of various indicator and warning lights on the instrument panel.

Multi-function Display

Details of the multi-function display, including speedometer and odometer.

Handlebar Switches

Description of left and right handlebar switch functions.

Clutch Lever

Location and operation of the clutch lever.

Shift Pedal

Location and function of the shift pedal for gear changes.

Brake Lever

Location and operation of the front brake lever.

Brake Pedal

Location and operation of the rear brake pedal.

Fuel Tank Cap

Procedure for removing and installing the fuel tank cap.

Fuel

Important safety precautions and recommendations for refueling.

Catalytic Converters

Information about catalytic converters and precautions during operation.

Seat

Procedure for removing and installing the seat.

Adjusting the Shock Absorber Assembly

How to adjust the spring preload on the shock absorber assembly.

Sidestand

Location and operation of the sidestand and its safety switch.

Ignition Circuit Cut-off System

Explanation of the ignition circuit cut-off system's functions.

For Your Safety – Pre-Operation Checks

Operation and Important Riding Points

Starting the Engine

Procedure and conditions for starting the engine.

Shifting

How to shift gears and the gear position indicators.

Tips for Reducing Fuel Consumption

Tips to improve fuel efficiency based on riding style.

Engine Break-in

Important procedures and guidelines for the engine break-in period.

Parking

Safe procedures for parking the motorcycle.

Periodic Maintenance and Adjustment

Owner's Tool Kit

Information about the owner's tool kit and its uses.

Removing and Installing Panels

Instructions for removing and reinstalling body panels for maintenance.

Checking the Spark Plug

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

Engine Oil and Oil Filter Element

Procedure for checking engine oil level and changing oil/filter.

Coolant

Procedure for checking and refilling coolant levels.

Changing the Coolant

Instructions for changing the coolant, with safety warnings.

Replacing the Air Filter Element and Cleaning the Check Hose

Procedure for replacing the air filter and cleaning the check hose.

Adjusting the Engine Idling Speed

How to check and adjust the engine idling speed.

Adjusting the Throttle Cable Free Play

Procedure for checking and adjusting the throttle cable free play.

Valve Clearance

Importance of valve clearance adjustment and dealer recommendation.

Tires

Information on tire specifications, pressure, and inspection.

Tire Air Pressure

Recommended tire pressures for different load conditions.

Tire Inspection

How to inspect tires for wear, damage, and proper tread depth.

Spoke Wheels

Guidelines for inspecting and maintaining spoke wheels.

Adjusting the Clutch Lever Free Play

Procedure for adjusting the clutch lever free play.

Checking the Front Brake Lever Free Play

How to check the front brake lever free play.

Adjusting the Brake Pedal Free Play

How to check and adjust the brake pedal free play.

Checking the Front and Rear Brake Pads

Procedure for checking brake pad wear using indicator grooves.

Checking the Brake Fluid Level

How to check brake fluid level and identify potential issues.

Changing the Brake Fluid

Recommendation for dealer to change brake fluid and hoses.

Drive Chain Slack

How to check and adjust the drive chain slack.

Cleaning and Lubricating the Drive Chain

Procedure for cleaning and lubricating the drive chain.

Checking and Lubricating the Cables

How to check and lubricate control cables.

Checking and Lubricating the Throttle Grip and Cable

Checking throttle grip operation and lubricating the cable.

Checking and Lubricating the Brake and Clutch Levers

Checking and lubricating brake and clutch lever pivots.

Checking and Lubricating the Brake Pedal

Checking and lubricating the brake pedal and its pivot.

Checking and Lubricating the Sidestand

Checking and lubricating the sidestand pivot and contact surfaces.

Lubricating the Swingarm Pivots

Lubricating the swingarm pivots at specified intervals.

Checking the Front Fork

How to check the condition and operation of the front fork.

Checking the Steering

How to check for worn or loose steering bearings.

Checking the Wheel Bearings

How to check front and rear wheel bearings for play or roughness.

Battery

Checking battery electrolyte level and lead connections.

Replacing the Fuses

Procedure for checking and replacing blown fuses.

Replacing the Headlight Bulb

Procedure for replacing the headlight bulb.

Replacing a Tail/Brake Light Bulb

Procedure for replacing the tail/brake light bulb.

Replacing a Turn Signal Light Bulb

Procedure for replacing a turn signal light bulb.

Replacing the License Plate Light Bulb

Procedure for replacing the license plate light bulb.

Replacing an Auxiliary Light Bulb

Procedure for replacing an auxiliary light bulb.

Supporting the Motorcycle

Precautions for supporting the motorcycle during maintenance.

Front Wheel

Procedure for removing and installing the front wheel.

Rear Wheel

Procedure for removing and installing the rear wheel.

Troubleshooting

General troubleshooting tips for common engine and system problems.

Troubleshooting Charts

Charts for diagnosing starting problems and poor engine performance.

Engine Overheating

Causes and procedures for addressing engine overheating.

Motorcycle Care and Storage

Care

General advice and procedures for cleaning the motorcycle.

Storage

Procedures for short-term and long-term storage of the motorcycle.

Specifications

Consumer Information

Identification Numbers

Recording key, vehicle identification, and model label information.

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