2018 YAMAHA MT-125 oil

Table of contents
Safety information............................1-1
Description........................................2-1
Left view ..........................................2-1
Right view........................................2-2
Controls and instruments ................2-3
Instrument and control functions....3-1
Main switch/steering lock ...............3-1
Indicator lights and warning
lights ............................................3-2
Multi-function meter unit .................3-4
Handlebar switches.......................3-12
Clutch lever ...................................3-13
Shift pedal .....................................3-14
Brake lever ....................................3-14
Brake pedal ...................................3-15
ABS ...............................................3-15
Fuel tank cap.................................3-16
Fuel................................................3-17
Catalytic converter ........................3-18
Rider seat ......................................3-19
Sidestand ......................................3-20
Ignition circuit cut-off system........3-20
For your safety – pre-operation
checks...............................................4-1
Operation and important riding
points.................................................5-1
Starting the engine ..........................5-2
Shifting ............................................5-3
Tips for reducing fuel
consumption ................................5-4
Engine break-in ...............................5-4
Parking ............................................5-5
Periodic maintenance and
adjustment........................................6-1
Owner’s tool kit ...............................6-2
Periodic maintenance chart for the
emission control system ..............6-3
General maintenance and
lubrication chart ...........................6-4
Removing and installing cowlings ...6-7
Checking the spark plug .................6-8Engine oil and oil filter element ....... 6-9
Coolant ......................................... 6-12
Replacing the air filter element
and cleaning the check hose..... 6-14
Checking the engine idling
speed......................................... 6-14
Adjusting the throttle grip free
play ............................................ 6-15
Valve clearance ............................. 6-16
Tires .............................................. 6-16
Cast wheels .................................. 6-19
Adjusting the clutch lever free
play ............................................ 6-19
Checking the front brake lever
free play ..................................... 6-20
Adjusting the brake pedal free
play ............................................ 6-21
Brake light switches ...................... 6-21
Checking the front and rear brake
pads........................................... 6-22
Checking the brake fluid level....... 6-23
Changing the brake fluid............... 6-24
Drive chain slack ........................... 6-24
Cleaning and lubricating the drive
chain .......................................... 6-26
Checking and lubricating the
cables ........................................ 6-26
Checking and lubricating the
throttle grip and cable ............... 6-27
Checking and lubricating the
brake and clutch levers ............. 6-27
Checking and lubricating the
brake pedal................................ 6-28
Checking and lubricating the
sidestand ................................... 6-28
Lubricating the swingarm
pivots ......................................... 6-29
Checking the front fork ................. 6-29
Checking the steering ................... 6-30
Checking the wheel bearings ....... 6-30
Battery .......................................... 6-31
Replacing the fuses ...................... 6-32
Replacing the headlight bulb ........ 6-33
Auxiliary lights ............................... 6-35
Tail/brake light .............................. 6-35
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Description
2-1
2
EAU63371
Left view
213
465
1. Battery (page 6-31)
2. Owner’s tool kit (page 6-2)
3. Fuse box (page 6-32)
4. Shift pedal (page 3-14)
5. Engine oil drain bolt (page 6-9)
6. Coolant reservoir (page 6-12)
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Description
2-2
2
EAU63391
Right view
YAMAHA
12
3546
1. Spark plug (page 6-8)
2. Front brake fluid reservoir (page 6-23)
3. Engine oil filter element (page 6-9)
4. Dipstick (page 6-9)
5. Rear brake fluid reservoir (page 6-23)
6. Brake pedal (page 3-15)
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Instrument and control functions
3-2
3From the “LOCK” position, push the
key and turn it to “OFF”.
EAU49399
Indicator lights and warning
lights
EAU11022Turn signal indicator light “ ”
This indicator light flashes when a turn
signal light is flashing.
EAU11061Neutral indicator light “ ”
This indicator light comes on when the
transmission is in the neutral position.
EAU11081High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11341Fuel level warning light “ ”
This warning light comes on when the
fuel level drops below approximately
3.0 L (0.79 US gal, 0.66 Imp.gal). When
this occurs, refuel as soon as possible.
1. Turn signal indicator light “ ”
2. Neutral indicator light “ ”
3. High beam indicator light “ ”
4. Tachometer high-rpm warning light
5. Fuel level warning light “ ”
6. Engine trouble warning light “ ”
7. Anti-lock Brake System (ABS) warning
light “ ”
Lo
Hi
1/2
x1000r/min
ZAUM1316SELECTRESET
km/L/100kmMPGkm/h
MPH
ODOFTRIP12OILOIL
1235467
ABS
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Instrument and control functions
3-4
3come on to indicate that the function is
activated or the light will go off to indi-
cate that the function is deactivated.
EAUM3423
Multi-function meter unit
TIP
When the key is turned to “ON”, all
display segments of the multi-
function meter unit will momen-
tarily appear in order to test the
electrical circuit. The speedome-
ter, tachometer, fuel meter and
coolant temperature meter will
then perform a display check and
a welcome message will scroll
across the multi-function display.
1. “INFO” switch
2. “RESET” button
3. “SELECT” button
1. Coolant temperature meter
2. Tachometer
3. Fuel meter
4. Odometer/tripmeter/fuel reserve tripmeter
5. Clock
6. Speedometer
7. Multi-function display
Lo1/2ODO
ZAUM1299
SELECTRESET
INFO
km/L/100kmMPGkm/h
MPH
ODOFTRIPx1000r/minOILOIL
23
1
Lo
Hi
1/2
x1000r/min
ZAUM1464
km/h
ODOOIL
123
4567
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Instrument and control functions
3-8
3Multi-function display
The multi-function display can show:
instantaneous fuel consumption
average fuel consumption
average speed
elapsed trip time
distance traveled since last oil ser-
vice
warning and service messages
Push the “INFO” button to switch be-
tween average fuel consumption “C
Ave__._km/L” or “C Ave __._ L/100
km”, instantaneous fuel consumption
“C INS__._km/L” or “C INS__._L/100
km”, elapsed trip time “TRIP TIME _h
__min”, average speed “AVE
SPEED/__km/h”, and the oil change
tripmeter (distance since last oil ser-
vice) “DIST SERV/__km” in the follow-
ing order:
C Ave__._km/L → C Ave __._ L/100 km
→ C INS__._km/L → C INS__._L/100
km → TRIP TIME _h __min → AVE
SPEED/__km/h → DIST SERV/__km
For the UK, when miles have been se-
lected:Push the “INFO” button to switch be-
tween the average fuel consumption
mode “C Ave__._mpg”, the instanta-
neous fuel consumption mode “C
INS__._mpg”, the trip time mode “TRIP
TIME _h __min”, the average speed
“AVE SPEED/__mph”, and the oil
change tripmeter (distance since last
oil service) “DIST SERV/__km” in the
following order:
C Ave__._mpg → C INS__._mpg →
TRIP TIME _h __min → AVE
SPEED/__mph → DIST SERV/__miles
Average fuel consumption “C AVE”
Average fuel consumption can be dis-
played in “AVE_ _._ km/L” or “AVE_ _._
L/100 km”, or in “AVE_ _._ MPG” for
the UK.
“AVE_ _._ km/L”: The average dis-
tance that can be traveled on 1.0 L
of fuel.
“AVE_ _._ L/100 km”: The average
amount of fuel necessary to travel
100 km.
“AVE_ _._ MPG”: The average dis-
tance that can be traveled on
1.0 Imp.gal of fuel.
1. Multi-function display
Lo
Hi
ZAUM1307km/L
OIL
1
Lo
Hi
ZAUM1309km/L L/100km
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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
3-11
3 15 seconds. “OIL SERV” message and
the oil change tripmeter will also be re-
set.
Low battery indicator “ ”
This indicator flashes (“LOW BATT”
message will also appear) when the
battery voltage is under 10 volts.
TIP
If the low battery indicator comes on,
check and recharge the battery as nec-
essary. (See page 6-31.)
Warning and service messages
This function works in conjunction with
fuel meter, coolant temperature meter,
oil change indicator, and low battery
indicator by displaying a correspond-
ing warning or service message. When
two or more messages occur, push the“INFO” button to switch between and
check all messages in the following or-
der:
HIGH TEMP →LOW FUEL →LOW
BATT →OIL SERV
Lo
Hi
ZAUM1313
Lo
Hi
ZAUM1315
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