2021 YAMAHA YZF-R125 Gear

Safety information
1-5
1operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
 Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. See page 6-17
for tire specifications and for informa-
tion on servicing and replacing your
tires.
Transportin g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle. 
Remove all loose items from the
motorcycle.
 Check that the fuel cock (if
equipped) is in the off position and
that there are no fuel leaks.
 Shift the transmission into gear
(for models with a manual trans-
mission).
 Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
 The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
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Instrument and control functions
3-4
3
TIPWhen the vehicle is turned on, the light
will come on for a few seconds and
then go off. If the light does not come
on, have a Yamaha dealer check the
vehicle.
EAUM4011
Multi-function meter unit
WARNING
EWA12423
Be sure to stop the vehicle before
makin g any settin g chan ges to the
multi-function meter unit. Chan gin g
settin gs while ri din g can distract the
operator an d increase the risk of an
acci dent.The multi-function meter unit is
equipped with the following:
 a speedometer
 a clock
 a fuel meter
 a VVA indicator
 a tachometer 
a transmission gear display
 a multi-function display
 a shift timing indicator light
 a self diagnostic device
TIPExcept when accessing the
brightness screen and shift timing
indicator light control mode or
when displaying the welcome
screen, the key must be turned
to “ ” before you can use the
“SELECT” and “RESET” buttons
to adjust the multi-function meter.
 For the UK: To switch between ki-
lometers and miles, press and
hold the “SELECT” button.
1. “SELECT” button
2. “RESET” buttonZAUM1567
1
2
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Instrument and control functions
3-6
3
This model is equipped with variable
valve actuation (VVA) for good fuel
economy and acceleration in both the
low-speed and high-speed ranges.
The VVA indicator comes on when the
variable valve actuation system has
switched to the high-speed range.
Tachometer
The tachometer allows the rider to
monitor the engine speed and keep it
within the ideal power range.
NOTICE
ECA23050
Do not operate the en
gine in the ta-
chometer hi gh-r/min zone. Hi
gh-r/min zone: 11000 r/min an d
a b ove
Transmission gear display
This display shows the selected gear.
The neutral position is indicated by “ ”
and by the neutral indicator light. Multi-function
display
The multi-function display is equipped
with the following:  an odometer
 two tripmeters
 a fuel reserve tripmeter
 an instantaneous fuel consump-
tion display
 an average fuel consumption dis-
play
 an average speed display
 a brightness screen and shift tim-
ing indicator light control mode
 welcome screen display
 a self diagnostic device
Push the “SELECT” button to switch
the display between the odometer
mode “ODO”, tripmeters mode “TRIP
1. Tachometer
2. Tachometer red zoneZAUM1572
1 2
1. Neutral indicator light “ ”
2. Transmission gear displayZAUM15731
2
1. Multi-function displayZAUM1574
1
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Instrument and control functions
3-13
3
EAU54203
Dimmer/Pass switch “ / /PASS”
Set this switch to “ ” for the high
beam and to “ ” for the low beam.
To flash the high beam, push the
switch down towards “PASS” while the
headlights are on low beam.
EAU12461
Turn si gnal switch “ / ”
To signal a right-hand turn, push this
switch to “ ”. To signal a left-hand
turn, push this switch to “ ”. When
released, the switch returns to the cen-
ter position. To cancel the turn signal
lights, push the switch in after it has re-
turned to the center position.
EAU12501
Horn switch “ ”
Press this switch to sound the horn.
EAU12664
En gine stop switch “ / ”
Set this switch to “ ” (run) before
starting the engine. Set this switch
to “ ” (stop) to stop the engine in case
of an emergency, such as in the event
of an overturn or if the throttle is stuck.
EAU12713
Start switch “ ”
Push this switch to crank the engine
with the starter. See page 5-2 for start-
ing instructions prior to starting the en-
gine.
EAU12823
Clutch leverTo disengage the drivetrain from the
engine, such as when shifting gears,
pull the clutch lever toward to the han-
dlebar. Release the lever to engage the
clutch and transmit power to the rear
wheel.TIPThe lever should be pulled rapidly and
released slowly for smooth shifting.
(See page 5-3.)1. Clutch leverZAUM1585
1
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Instrument and control functions
3-14
3
EAU12876
Shift pe dalThe shift pedal is located on the left
side of the motorcycle. To shift the
transmission to a higher gear, move
the shift pedal up. To shift the trans-
mission to a lower gear, move the shift
pedal down. (See page 5-3.)
EAU12892
Brake leverThe brake lever is located on the right
side of the handlebar. To apply the
front brake, pull the lever toward the
throttle grip.
EAU12944
Brake pe dalThe brake pedal is located on the right
side of the motorcycle. To apply the
rear brake, press down on the brake
pedal.
1. Shift pedalZAUM1586
1
1. Brake leverZAUM1587
1
1. Brake pedalZAUM1588
1
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Instrument and control functions
3-21
3 this system reg
ularly and have a
Yamaha dealer repair it if it does not
function properly.
EAU44895
I g nition circuit cut-off systemThis system prevents in-gear engine
starts unless the clutch lever is pulled
and the sidestand is up. Also, it will
stop the running engine should the
sidestand be lowered while the trans-
mission is in gear.
Periodically check the system via the
following procedure.TIP This check is most reliable if per-
formed with a warmed-up engine.
 See pages 3-1 and 3-12 for switch
operation information.
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Instrument and control functions
3-22
3
With the engine turned off:
1. Move the sidestand down.
2. Set engine stop switch to run position.
3. Turn main switch to on position.
4. Shift transmission into neutral.
5. Push the start switch.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Pull the clutch lever.
8. Shift transmission into gear.
9. Move the sidestand down.
Does the engine stall?
After the engine has stalled:
10. Move the sidestand up.
11. Pull the clutch lever.
12. Push the start switch.
Does the engine start?
The system is OK. The motorcycle can be ridden.
YES NO YES NO YES NO
The neutral switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
The clutch switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The sidestand switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.If a malfunction is found, have the vehicle
inspected before riding.
WARNING
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Operation and important ri din g points
5-1
5
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU16831
En gine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAU16983
0–500 km (0–300 mi)
Avoid prolonged operation above 5000
r/min.
After every hour of operation, stop the
engine, and then let it cool for five to
ten minutes.
Vary the engine speed from time to
time. Do not operate the engine at one
set throttle position. 500–1000 km (300–600 mi)
Avoid prolonged operation above 7500
r/min.
Rev the engine freely through the
gears, but do not use full throttle at any
time.
NOTICE: After 1000 km (600 mi)
of operation, the en gine oil must b e
chan ged , the oil filter cartri dge or el-
ement replace d, an d the oil strainer
cleaned .
[ECA10322]
1000 km (600 mi) and b eyon d
The vehicle can now be operated nor-
mally.NOTICE
ECA10311
 Keep the en gine spee d out of
the tachometer red zone.
 If any en gine trou ble shoul d oc-
cur during the en gine break-in
perio d, imme diately have a
Yamaha dealer check the vehi-
cle.
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