2019 YAMAHA YZF-R125 stop start

Instrument and control functions
3-4
3
EAUM4010
Multi-function meter unit
WARNING
EWA12423
Be sure to stop the vehicle before
making any setting changes to the
multi-function meter unit. Changing
settings while riding can distract the
operator and increase the risk of an
accident.
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 diagnosis 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.
Speedometer
The speedometer shows the vehicle’s
traveling speed.
Clock mode
The clock uses a 12-hour time system.
To set the clock
1. Push and hold the “SELECT” and
“RESET” button together.
2. When the hour digits start flash-
ing, use the “RESET” button to set
the hours.
3. Push the “SELECT” button and
the minutes will start flashing.
1. “SELECT” button
2. “RESET” button
ZAUM156712
1. Speedometer
1. Clock
ZAUM15681
ZAUM15691
UB5GE0E0.book Page 4 Thursday, August 23, 2018 10:05 AM

Instrument and control functions
3-12
3
EAU1234M
Handlebar switches
Left
Right
EAUM4030Dimmer/Pass switch “ / /PASS”
Set this switch to “ ” for the high
beam and to “ ” for the low beam.
To flash the high beam, push the pass
side “PASS” of the switch while the
headlights are on low beam.
TIP
When the switch is set to low beam,
both headlights come on.
When the switch is set to high beam,
both headlights come on.
EAU12461Turn signal 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.
EAU12501Horn switch “ ”
Press this switch to sound the horn.
EAU12663Engine 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.
EAU12713Start 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.
EAU42342The engine trouble warning light and
ABS warning light may come on when
the key is turned to “ON” and the start
switch is pushed, but this does not in-
dicate a malfunction.
1. Dimmer/Pass switch “ / /PASS”
2. Turn signal switch “ / ”
3. Horn switch “ ”
1. Engine stop switch “ / ”
2. Start switch “ ”
ZAUM1583
1
2
3
ZAUM1584
1
2
UB5GE0E0.book Page 12 Thursday, August 23, 2018 10:05 AM

Instrument and control functions
3-22
3
With the engine turned off:
1. Move the sidestand down.
2.
Make sure that the engine stop switch
is set to “ ”.
3. Turn the key on.
4. Shift the transmission into the neutral
position.
5. Push the start switch.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the sidestand down.
Does the engine stall?
After the engine has stalled:
10. Move the sidestand up.
11. Keep the clutch lever pulled.
12. Push the start switch.
Does the engine start?
The system is OK. The motorcycle can
be ridden.
The neutral switch may not be working
correctly.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
The sidestand switch may not be
working correctly.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
The clutch switch may not be working
correctly.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
WARNING
If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
YES NO
YES NO
YES NO
UB5GE0E0.book Page 22 Thursday, August 23, 2018 10:05 AM

Operation and important riding 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 could cause an accident
or injury.
EAU45311
TIP
This model is equipped with a lean an-
gle sensor to stop the engine in case of
a turnover. To start the engine after a
turnover, be sure to turn the main

ing to do so will prevent the engine
from starting even though the engine
will crank when pushing the start
switch.
UB5GE0E0.book Page 1 Thursday, August 23, 2018 10:05 AM

Operation and important riding points
5-2
5
EAUM4021
Starting the engine
Under normal conditions, shift the
transmission into neutral before start-
ing the engine. To start the engine with
the transmission in gear, the sidestand
must be up and the clutch lever pulled.
To start the engine
1. Set the engine stop switch to the
run position, and turn the main
switch to the on position.
2. Confirm the following lights come
on for a few seconds and then go
off.
Engine trouble warning light
Coolant warning light
Shift timing indicator light
TIP
The ABS warning light should go
off after reaching a speed of 10
km/h (6 mi/h) or higher.
The neutral position indicator light
should be on when the transmis-
sion is in neutral.
NOTICE
ECA24110
If a warning or indicator light does
not work as described above, have a
Yamaha dealer check the vehicle.
3. Shift the transmission into neutral.
4. Push the start switch to crank the
engine with the starter.
Release the start switch when the
engine starts, or after 5 seconds.
Wait 10 seconds before pressing
the switch again to allow battery
voltage to restore.
NOTICE
ECA11043
For maximum engine life, never ac-
celerate hard when the engine is
cold!
UB5GE0E0.book Page 2 Thursday, August 23, 2018 10:05 AM

Periodic maintenance and adjustment
6-38
6 Engine overheating
WARNING
EWA10401
Do not remove the radiator cap when the engine and radiator are hot.
Scalding hot fluid and steam may be blown out under pressure, which
could cause serious injury. Be sure to wait until the engine has cooled.
After removing the radiator cap retaining bolt, place a thick rag, like a
towel, over the radiator cap, and then slowly rotate the cap counter-
clockwise to the detent to allow any residual pressure to escape. When
the hissing sound has stopped, press down on the cap while turning it
counterclockwise, and then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided
that it is changed to the recommended coolant as soon as possible.
Wait until the engine
has cooled.
Check the coolant
level in the reservoir
and radiator.Add coolant.
(See TIP.)
The coolant level is
OK.
There is no leakage.
There is leakage.
The coolant level is
low.
Check the cooling
system for leakage.
Have a Yamaha
dealer check and
repair the cooling
system.
Start the engine. If the engine overheats again,
have a Yamaha dealer check and repair the cooling
system.
UB5GE0E0.book Page 38 Thursday, August 23, 2018 10:05 AM

10-1
10
Index
A
ABS ....................................................... 3-15
ABS warning light ................................... 3-3
Air filter element and check hose,
replacing and cleaning ....................... 6-14
B
Battery .................................................. 6-31
Brake and clutch levers, checking and
lubricating ........................................... 6-28
Brake and shift pedals, checking and
lubricating ........................................... 6-28
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever ............................................ 3-14
Brake light switches.............................. 6-22
Brake pedal........................................... 3-14
Brake pedal free play, adjusting ........... 6-21
C
Cables, checking and lubricating ......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-18
Clutch lever ........................................... 3-13
Clutch lever free play, adjusting ........... 6-20
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-2
Cowlings, removing and installing .......... 6-7
D
Data recording, vehicle ........................... 9-3
Diagnostic connectors ............................ 9-2
Dimmer/Pass switch ............................. 3-12
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack................................... 6-25
E
Engine break-in....................................... 5-4
Engine idling speed .............................. 6-15
Engine oil and oil filter element ............. 6-10
Engine serial number .............................. 9-1
Engine stop switch ............................... 3-12
Engine trouble warning light ................... 3-3
F
Front and rear brake pads, checking.... 6-22
Front brake lever free play, checking ... 6-21
Front fork, checking .............................. 6-30
Fuel ....................................................... 3-16
Fuel consumption, tips for reducing ....... 5-4
Fuel tank cap ........................................ 3-16
Fuel tank overflow hose ........................ 3-18
Fuses, replacing.................................... 6-33
H
Handlebar switches .............................. 3-12High beam indicator light ....................... 3-2
Horn switch .......................................... 3-12
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system............... 3-21
Indicator lights and warning lights ......... 3-2
L
License plate light bulb, replacing........ 6-35
M
Main switch/steering lock....................... 3-1
Maintenance and lubrication, periodic ... 6-4
Maintenance, emission control
system.................................................. 6-3
Matte color, caution ............................... 7-1
Model label ............................................. 9-1
Multi-function meter unit ........................ 3-4
N
Neutral indicator light ............................. 3-2
P
Parking ................................................... 5-5
Part locations ......................................... 2-1
S
Safety information .................................. 1-1
Seats .................................................... 3-19
Shifting ................................................... 5-3
Shift pedal ............................................ 3-13
Shift timing indicator light....................... 3-3
Sidestand ............................................. 3-20
Sidestand, checking and lubricating .... 6-29
Spark plug, checking ............................. 6-9
Specifications ......................................... 8-1
Starting the engine ................................. 5-2
Start switch .......................................... 3-12
Steering, checking................................ 6-30
Storage ................................................... 7-4
Supporting the motorcycle................... 6-36
Swingarm pivots, lubricating ................ 6-29
T
Tail/brake light ...................................... 6-34
Throttle grip and cable, checking and
lubricating .......................................... 6-27
Throttle grip free play, adjusting........... 6-15
Tires ...................................................... 6-17
Tool kit.................................................... 6-2
Troubleshooting ................................... 6-36
Troubleshooting charts ........................ 6-37
Turn signal indicator light ....................... 3-2
Turn signal light bulb, replacing ........... 6-35
Turn signal switch ................................ 3-12
UB5GE0E0.book Page 1 Thursday, August 23, 2018 10:05 AM