2017 YAMAHA MT-125 engine

Instrument and control functions
3-3
3 The electrical circuit of the warning
light can be checked according to the
following procedure.
1. Turn the key to “ON”.
2. If the warning light does not come
on, have a Yamaha dealer check
the electrical circuit.
EAU11486Engine trouble warning light “ ”
This warning light comes on if a prob-
lem is detected in the electrical circuit
monitoring the engine. If this occurs,
have a Yamaha dealer check the vehi-
cle.
The electrical circuit of the warning
light can be checked by turning the key
to “ON”. The warning light should
come on for a few seconds, and then
go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAU69890ABS warning light “ ”
In normal operation, the ABS warning
light comes on when the key is turned
to “ON”, and goes off after traveling at
a speed of 10 km/h (6 mi/h) or higher.
If the ABS warning light:
does not come on when the key is
turned to “ON”
comes on or flashes while riding
does not go off after traveling at a
speed of 10 km/h (6 mi/h) or high-
erThe ABS may not work correctly. If any
of the above occurs, have a Yamaha
dealer check the system as soon as
possible. (See page 3-15 for an expla-
nation of the ABS.)
WARNING
EWA16041
If the ABS warning light does not go
off after traveling at a speed of 10
km/h (6 mi/h) or higher, or if the
warning light comes on or flashes
while riding, the brake system re-
verts to conventional braking. If ei-
ther of the above occurs, or if the
warning light does not come on at
all, use extra caution to avoid possi-
ble wheel lock during emergency
braking. Have a Yamaha dealer
check the brake system and electri-
cal circuits as soon as possible.
EAUM3440Tachometer high-rpm warning light
This light flashes at 9500 r/min to warn
you that the engine speed is about to
enter the high-rpm zone. Once the en-
gine speed reaches 10000 r/min, this
light will come on to warn you that it is
necessary to shift up to avoid engine
damage.
To activate or deactivate the tachome-
ter high-rpm warning light, hold the
“INFO” button pushed, turn the key to
“ON”, and when the tachometer high-
rpm warning light starts flashing, press
the “SELECT” button.
TIP
When activating or deactivating the
warning light the function, after press-

ABS
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Instrument and control functions
3-5
3 For the UK: the multifunction me-
ter unit can be switched between
kilometers and miles (see “Speed-
ometer”).
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.
Speedometer
The speedometer shows the vehicle's
traveling speed in kilometers per hour
(km/h).
For the UK: to change to MPH (or vice-
versa) do the following.
1. Turn the key to “OFF”.
2. While pressing the “SELECT” but-
ton and the “RESET” button, turn
the key to “ON”, and then release
the buttons.
3. Use the “SELECT” button to
switch between kilometers or
miles, and then press the “SE-
LECT” button for two seconds to
confirm the setting.Tachometer
The tachometer shows engine speed
in crankshaft revolutions per minute
(r/min).
NOTICE
ECAM1150
Do not operate the engine in the ta-
chometer high-rpm zone.
High-rpm zone: 10000 r/min and
above
Clock
The clock displays time in 12-hour for-
mat.
To set the clock
1. Turn the key to “ON”.
1. Tachometer
2. High-rpm zone
1. Clock
x1000r/min
ZAUM1301
km/h
1
2
1/2
ZAUM1302
ODOTRIP1
1
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Instrument and control functions
3-6
32. Push the “SELECT” button for two
seconds, and the hour digits will
start flashing.
3. Use the “RESET” button to set the
hours.
4. Push the “SELECT” button, and
the minute digits will start flashing.
5. Use the “RESET” button to set the
minutes.
6. Push the “SELECT” button to con-
firm settings and start the clock.
TIP
When setting the hours and minutes, a

creases the increment value one by
one. You may also push and hold the
button to increase the value continu-
ously.
Fuel meter
The fuel meter indicates the amount of
fuel in the fuel tank. The display seg-
ments of the fuel meter disappear from
“F” (full) towards “E” (empty) as the fuel
level decreases. When the fuel level
becomes low, the last segment will
flash and the fuel level warninglight “ ” will come on (“LOW FUEL”
message will also appear). Refuel as
soon as possible.
TIP
If a problem is detected in the fuel me-
ter electrical circuit, all display seg-
ments of the fuel meter will flash eight
times, then go off for 3 seconds, re-
peatedly. If this occurs, have your
Yamaha dealer check the vehicle.
Coolant temperature meter
The coolant temperature meter indi-
cates the temperature of the coolant,
and therefore the engine. When the
coolant temperature is at its upper lim-
it, the second segment from the top
will start to flash. Should this occur, re-
duce the load on the engine by riding at
a moderate pace, at low rpm, until the
coolant temperature goes down. If the
top two segments and “ ” start flash-
ing (“HIGH TEMP” message will also
appear), stop the vehicle and let the
engine cool.
1. Fuel meter
2. Fuel level warning light “ ”
3. Fuel reserve tripmeter
4. Information display
Lo
Hi
1/2
x1000r/min
ZAUM1303
km/h
FTRIP
21
34
1. Coolant temperature warning indicator Ž
2. Information display
3. Coolant temperature meter
Lo
Hi
ZAUM1304
31
2
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Instrument and control functions
3-7
3
NOTICE
ECA10022
Do not continue to operate the en-
gine if it is overheating.
TIP
Coolant temperature varies with
changes in the weather and en-
gine load.
The radiator fan will automatically
switch on or off according to the
coolant temperature.
If the engine overheats, see page
6-39 for further instruction.
Odometer and tripmeter display
The odometer and tripmeter display is
equipped with:
an odometer
two tripmeters
a fuel reserve tripmeter
Push the “SELECT” button to switch
between the odometer and the tripme-
ters in the following order:
ODO (odometer) → TRIP 1 (tripmeter)
→ TRIP 2 (tripmeter) → ODO (odome-
ter)When approximately 3.0 L (0.79 US
gal, 0.66 Imp.gal) of fuel remains in the
fuel tank, the display will automatically
change to the fuel reserve tripmeter
mode “F TRIP” and start counting the
distance traveled from that point. In
this case, push the “SELECT” button
to switch the display in the following
order:
F TRIP → ODO → TRIP 1 → TRIP 2 →
F TRIP
To manually reset a tripmeter, select it
with the “SELECT” button, and then
push the “RESET” button for two sec-
onds.
TIP
The fuel reserve tripmeter will re-
set automatically and disappear
after you have refueled and turned
the key to “OFF”.
The tripmeters will automatically
reset and continue counting after
999.9 is reached.
The odometer will lock at 199999
and cannot be reset.
1. Odometer/tripmeter/fuel reserve tripmeter
1/2
ZAUM1305
TRIP1
1
1. Odometer/tripmeter/fuel reserve tripmeter
1/2
ZAUM1306
F TRIP
1
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Instrument and control functions
3-10
3Trip time meter “TRIP TIME”
This function records the elapsed time
of your current trip, or since it was last
reset. Trip time is displayed in “_h
_min” (hours and minutes).
TIP
The trip time meter will automati-
cally reset 4 hours after the key
was last turned to “OFF”.
To manually reset the trip time me-
ter, push the “RESET” button for
two seconds. However, the
odometer and tripmeter display
must be set to “ODO”, otherwise
the tripmeter will be reset instead.
Oil change trip meter “DIST SERV”
This function shows the distance trav-
eled since your last oil service. It will re-
set when the oil change indicator is
reset.Oil change indicator “OIL”
This indicator flashes (“OIL SERV”
message will also appear) to indicate
that the engine oil should be changed.
It will come on at the initial 1000 km
(600 mi) service interval, 2000 km
(1200 mi) after that, and every 3000 km
(1800 mi) thereafter. After changing the
engine oil, be sure to reset the oil
change indicator.
To reset the oil change indicator, make
sure the odometer and tripmeter dis-
play is set to “ODO”, then push the
“RESET” button for two seconds until
“OIL SERV” message flashes, and then
push and hold the “RESET” button for
15 seconds.
TIP
If the engine oil is changed before the
oil change indicator comes on (i.e. be-
fore the set oil service interval has been
reached), the indicator must be reset
for the next oil change to be indicated
at the correct time. In this case, make
sure the odometer and tripmeter is set

the multi-function display, then push



Lo
Hi
ZAUM1311
ZAUM1449
Lo
Hi
ZAUM1450
Lo
Hi
OIL
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Instrument and control functions
3-12
3
EAU1234K
Handlebar switches
Left
Right
EAU12352Pass switch “ ”
Press this switch to flash the headlight.
TIP
When the dimmer switch is set
to “ ”, the passing switch has no ef-
fect.
EAU12401Dimmer switch “ / ”
Set this switch to “ ” for the high
beam and to “ ” for the low beam.
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.
EAU12662Engine stop switch “ / ”
Set this switch to “ ” before starting
the engine. Set this switch to “ ” to
stop the engine in case of an emergen-
cy, such as when the vehicle overturns
or when the throttle cable 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.
EAUM3451Info switch “INFO”
This switch is used to perform selec-
tions in the function display of the
multi-function meter unit and to acti-
vate or deactive the high-rpm warning
light. (See page 3-4 for information on
1. Pass switch “ ”
2. Dimmer switch “ / ”
3. Turn signal switch “ / ”
4. Horn switch “ ”
1. Engine stop switch “ / ”
2. Start switch “ ”
3. “INFO” switch
ZAUM1162
ZAUM1163
13
2I NFO
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Instrument and control functions
3-17
3
EAU13213
Fuel
Make sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.
1. Before refueling, turn off the en-
gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. Stop
filling when the fuel reaches the
bottom of the filler tube. Because
fuel expands when it heats up,
heat from the engine or the sun
can cause fuel to spill out of the
fuel tank.
3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately
wipe off spilled fuel with a clean,dry, soft cloth, since fuel may
deteriorate painted surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel
tank cap.
WARNING
EWA15152
Gasoline is poisonous and can
cause injury or death. Handle gaso-
line with care. Never siphon gasoline
by mouth. If you should swallow
some gasoline or inhale a lot of gas-
oline vapor, or get some gasoline in
your eyes, see your doctor immedi-
ately. If gasoline spills on your skin,
wash with soap and water. If gaso-
line spills on your clothing, change
your clothes.
EAU75320
NOTICE
ECA11401
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.
1. Fuel tank filler tube
2. Maximum fuel level
Recommended fuel:
Premium unleaded gasoline (Gaso-
hol [E10] acceptable)
Fuel tank capacity:
11.5 L (3.04 US gal, 2.53 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on):
3.0 L (0.79 US gal, 0.66 Imp.gal)
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Instrument and control functions
3-18
3TIP
This mark identifies the recom-
mended fuel for this vehicle as
specified by European regulation
(EN228).
 Check that gasoline nozzle has
the same identifier when fueling.
Your Yamaha engine has been de-
signed to use premium unleaded gas-
oline with a research octane number of
95 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand. Use of unleaded fuel will extend
spark plug life and reduce mainte-
nance costs.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that con-
taining methanol. Gasohol containing
ethanol can be used if the ethanol con-
tent does not exceed 10% (E10). Gas-
ohol containing methanol is not
recommended by Yamaha because it
can cause damage to the fuel system
or vehicle performance problems.
EAU13434
Catalytic converter
This model is equipped with a catalytic
converter in the exhaust system.
WARNING
EWA10863
The exhaust system is hot after op-
eration. To prevent a fire hazard or
burns:
 Do not park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.
 Park the vehicle in a place
where pedestrians or children
are not likely to touch the hot
exhaust system.
 Make sure that the exhaust sys-
tem has cooled down before
doing any maintenance work.
 Do not allow the engine to idle
more than a few minutes. Long
idling can cause a build-up of
heat.
NOTICE
ECA10702
Use only unleaded gasoline. The use
of leaded gasoline will cause unre-
pairable damage to the catalytic
converter.
E5E10
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