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OWNER'S MANUAL
YZF-R125
MOTORCYCLE
Read this manual carefully before oper-
ating this vehicle.
YZF125-A
B5G-F8199-E0

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Summarization of Contents

Safety Information
Be a Responsible Owner
Owner's responsibilities for safe operation and proper use of the motorcycle.
Safe Riding Practices
Pre-operation checks and safe riding techniques to prevent accidents.
Carbon Monoxide Poisoning Prevention
Precautions to prevent poisoning from engine exhaust in enclosed areas.
Vehicle Loading Guidelines
Safely managing vehicle stability with added cargo or accessories.
Genuine Yamaha Accessories
Importance of using genuine accessories for safety and performance.
Aftermarket Parts and Modifications
Risks of aftermarket parts affecting vehicle safety and operation.
Description
Motorcycle Left View
Identification of major components on the left side of the motorcycle.
Motorcycle Right View
Identification of major components on the right side of the motorcycle.
Controls and Instruments Overview
Location and identification of handlebar controls and dashboard instruments.
Instrument and Control Functions
Main Switch and Steering Lock
Operation of the main switch for ignition and steering lock.
Indicator and Warning Lights
Explanation of various indicator and warning lights on the instrument panel.
Multi-Function Meter Unit
Features and operation of the digital multi-function meter unit.
Handlebar Switches
Location and operation of switches on the left and right handlebars.
Clutch Lever Operation
Location and operation of the clutch lever for disengaging the clutch.
Shift Pedal Operation
Location and operation of the shift pedal for changing gears.
Brake Lever Operation
Location and operation of the front brake lever.
Brake Pedal Operation
Location and operation of the rear brake pedal.
Anti-lock Brake System (ABS)
Explanation of ABS features and operation.
Fuel Tank Cap and Fueling
Procedures for opening fuel cap and safety precautions for refueling.
Fuel System Components
Checking fuel tank overflow hose and catalytic converter.
Seat Removal and Installation
Procedures for removing and installing passenger and rider seats.
Sidestand Operation
Operation of the sidestand and its safety switch function.
Ignition Circuit Cut-off System
System preventing starting under certain conditions.
Operation and Important Riding Points
Starting the Engine
Step-by-step instructions for starting the motorcycle engine safely.
Gear Shifting Techniques
Controlling engine power by shifting gears smoothly.
Fuel Consumption Tips
Advice on riding techniques to improve fuel efficiency.
Engine Break-in Procedure
Crucial procedures for the initial engine break-in period (0-1000 km).
Safe Parking Procedures
Precautions for parking the motorcycle safely.
Periodic Maintenance and Adjustment
Owner's Tool Kit
Location and purpose of the tool kit for maintenance.
Spark Plug Maintenance
Checking spark plug condition and gap for engine health.
Engine Oil and Filter Service
Procedures for checking engine oil level and changing oil/filter.
Coolant System Maintenance
How to check and maintain the engine coolant level.
Air Filter and Check Hose
Steps for replacing air filter and cleaning check hose.
Throttle Grip and Cable Adjustment
Adjusting throttle grip free play and cable.
Valve Clearance Adjustment
Importance of checking and adjusting valve clearance for engine performance.
Tire Maintenance and Inspection
Tire air pressure, inspection, and replacement advice.
Brake System Maintenance
Checking brake pads, fluid level, and changing fluid.
Drive Chain Maintenance
Checking and adjusting drive chain slack and lubrication.
Cable Lubrication
Inspecting and lubricating control cables for smooth operation.
Lever and Pedal Lubrication
Lubricating pivots of levers and pedals for smooth operation.
Sidestand and Swingarm Lubrication
Lubricating sidestand pivot and swingarm pivots.
Front Fork and Steering Checks
Checking front fork condition and steering bearing play.
Wheel Bearings and Battery
Checking wheel bearings and battery connections.
Fuse Replacement
How to safely replace blown fuses with the correct amperage.
Vehicle Lights Check
Checking operation of headlights, taillight, and turn signals.
Bulb Replacement
Procedures for replacing turn signal and license plate bulbs.
Motorcycle Support and Troubleshooting
Using stands and troubleshooting starting/engine performance issues.
Motorcycle Care and Storage
Matte Color Cautions
Special cleaning advice for matte parts to prevent damage.
Vehicle Cleaning Procedures
Steps for cleaning the motorcycle after normal use or adverse conditions.
Motorcycle Storage Guidelines
Instructions for storing the motorcycle for short-term and long-term periods.
Consumer Information
Identification Numbers
Recording vehicle identification, engine serial, and model label information.
Diagnostic Connectors
Location of ABS and Fuel Injection diagnostic connectors.
Vehicle Data Recording and Privacy
Information on ECU data storage and Yamaha's privacy policy.

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