Yamaha YZF-R125 Owners Manual: Periodic maintenance and adjustment
Periodic inspection, adjustment, and lubrication will keep your vehicle in the safest and most efficient condition possible. Safety is an obligation of the vehicle owner/operator. The most important points of vehicle inspection, adjustment, and lubrication are explained on the following pages.
The intervals given in the periodic maintenance and lubrication chart should be simply considered as a general guide under normal riding conditions. However, depending on the weather, terrain, geographical location, and individual use, the maintenance intervals may need to be shortened.
WARNING
Failure to properly maintain the vehicle
or performing maintenance activities
incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle service,
have a Yamaha dealer perform
service.
WARNING
Turn off the engine when performing
maintenance unless otherwise
specified.
- A running engine has moving parts that can catch on body parts or clothing and electrical parts that can cause shocks or fires.
- Running the engine while servicing can lead to eye injury, burns, fire, or carbon monoxide poisoning - possibly leading to death. See page 1-1 for more information about carbon monoxide.
- Owner's tool kit
- Periodic maintenance chart for the emission control system
- General maintenance and lubrication chart
- Removing and installing the cowlings and panel
- Checking the spark plug
- Engine oil and oil filter element
- Coolant
- Replacing the air filter element and cleaning the check hose
- Adjusting the engine idling speed
- Adjusting the throttle cable free play
- Valve clearance
- Tires
- Cast wheels
- Adjusting the clutch lever free play
- Checking the front brake lever free play
- Adjusting the brake pedal free play
- Checking the front and rear brake pads
- Checking the brake fluid level
- Changing the brake fluid
- Drive chain slack
- Cleaning and lubricating the drive chain
- Checking and lubricating the cables
- Checking and lubricating the throttle grip and cable
- Checking and lubricating the brake and shift pedals
- Checking and lubricating the brake and clutch levers
- Checking and lubricating the sidestand
- Lubricating the swingarm pivots
- Checking the front fork
- Checking the steering
- Checking the wheel bearings
- Battery
- Replacing the fuses
- Replacing a headlight bulb
- Tail/brake light
- Replacing a turn signal light bulb
- Replacing the license plate light bulb
- Replacing an auxiliary light bulb
- Supporting the motorcycle
- Front wheel
- Rear wheel
- Troubleshooting
- Troubleshooting charts
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
WARNING
Since the engine and exhaust
system can become very hot,
park in a place where pedestrians
or ch ...
Owner's tool kit
Owner's tool kit
Owner's tool kit
Engine oil drain attachment
The owner's tool kit is located under the
rider seat.
The service information included in this
manual and the tools prov ...
Other materials:
Multi-function display
Multi-function display
Multi-function display
"RESET/SELECT" button
WARNING
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract the
operator and increase the risk of an
accident.
The multi- ...
Faulty lighting or signaling system
Headlight does not come on
- Wrong headlight bulb
- Too many electrical accessories
- Hard charging
- Incorrect connection
- Improperly grounded circuit
- Poor contacts (main or light switch)
- Burnt-out headlight bulb
Headlight bulb burnt out
- Wrong headlight bulb
- Faulty battery
- Fau ...
Checking the piston rings
1. Measure:
Piston ring side clearance
Out of specification Replace the
piston
and piston rings as a set.
NOTE:
Before measuring the piston ring side clearance,
eliminate any carbon deposits from the piston
ring grooves and piston rings.
2. Install:
Piston ring
(into the cylind ...