Introduction
EAU60580
Welcome to the Yamaha world of motorcycling!
As the owner of the MWS125-C/MWS125-A, you are benefiting from Yamaha’s
vast experience and newest technology regarding the design and manufacture of
high-quality products, which have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all advantages
of your MWS125-C/MWS125-A. The Owner’s Manual does not only instruct you
in how to operate, inspect and maintain your vehicle, but also in how to safeguard
yourself and others from trouble and injury.
In addition, the many tips given in this manual will help keep your vehicle in the
best possible condition. If you have any further questions, do not hesitate to con-
tact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put
safety first!
Yamaha continually seeks advancements in product design and quality. There-
fore, while this manual contains the most current product information available at
the time of printing, there may be minor discrepancies between your vehicle and
this manual. If there is any question concerning this manual, please consult a
Yamaha dealer.
WARNING
EWA17780
Please read this manual carefully and completely before operating this vehi-
cle.
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Important manual information
EAU63350
Particularly important information is distinguished in this manual by the following
notations:
*Product and specifications are subject to change without notice.
EAU37432
This is the safety alert symbol. It is used to
alert you to potential personal injury haz-
ards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
A WARNING indicates a hazardous situation
which, if not avoided, could result in death or
serious injury.
A NOTICE indicates special precautions that
must be taken to avoid damage to the vehi-
cle or other property.
A TIP provides key information to make proce-
dures easier or clearer.
MWS125-C/MWS125-A
OWNER’S MANUAL
©2016 by Thai Yamaha Motor Co., Ltd.
1st edition, September 2016
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Thai Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Thailand.
WARNING
NOTICE
TIP
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Table of contents
Safety information............................1-1
Further safe-riding points ................1-6
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
Keyhole shutter ...............................3-2
Indicator lights and warning
lights ............................................3-3
Multi-function meter unit .................3-5
Handlebar switches.........................3-9
Front brake lever ...........................3-10
Rear brake lever ............................3-10
ABS (for ABS models) ...................3-11
Fuel tank cap.................................3-12
Fuel................................................3-12
Fuel tank overflow hose ................3-14
Catalytic converter ........................3-14
Seat ...............................................3-15
Passenger footrest ........................3-15
Storage compartment ...................3-16
Accessory box...............................3-17
Luggage hook ...............................3-18
Sidestand ......................................3-18
Ignition circuit cut-off system........3-19
Auxiliary DC jack ..........................3-21
Auxiliary DC connector .................3-22
For your safety – pre-operation
checks...............................................4-1
Operation and important riding
points.................................................5-1
Starting the engine ..........................5-1
Starting off.......................................5-2
Acceleration and deceleration.........5-3
Braking ............................................5-3
Tips for reducing fuel
consumption ................................5-4
Engine break-in ...............................5-4
Parking ............................................5-5Periodic 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 the
panel ............................................ 6-7
Checking the spark plug ................. 6-8
Engine oil and oil strainer................ 6-9
Final transmission oil .................... 6-11
Coolant ......................................... 6-12
Air filter and V-belt case air filter
elements .................................... 6-14
Checking the throttle grip
free play ..................................... 6-16
Valve clearance ............................. 6-17
Tires .............................................. 6-17
Cast wheels .................................. 6-19
Checking the front brake lever
free play ..................................... 6-20
Checking the rear brake lever
free play ..................................... 6-20
Checking the front and rear
brake pads................................. 6-21
Checking the brake fluid level....... 6-22
Changing the brake fluid............... 6-23
Checking the V-belt ...................... 6-23
Checking and lubricating the
cables ........................................ 6-24
Checking and lubricating the
throttle grip and cable ............... 6-24
Lubricating the front and rear
brake levers ............................... 6-25
Checking and lubricating the
centerstand and sidestand ........ 6-25
Checking the front fork ................. 6-26
Checking the steering ................... 6-26
Checking the wheel bearings ....... 6-27
Checking the steering tie rod........ 6-27
Checking the leaning system ........ 6-28
Battery .......................................... 6-28
Replacing the fuses ...................... 6-30
Headlight....................................... 6-31
Auxiliary lights ............................... 6-32
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1-1
1
Safety information
EAU60750
Be a Responsible Owner
As the vehicle’s owner, you are re-
sponsible for the safe and proper oper-
ation of your vehicle.
This is a leaning multi-wheel vehicle.
The safe use and operation of this ve-
hicle is dependent upon the use of
proper riding techniques as well as the
expertise of the operator. Every opera-
tor should know the following require-
ments before riding this vehicle.
He or she should:
zObtain thorough instructions from
a competent source on all aspects
of this vehicle’s operation.
zObserve the warnings and mainte-
nance requirements in this Own-
er’s Manual.
zObtain qualified training in safe
and proper riding techniques.
zObtain professional technical ser-
vice as indicated in this Owner’s
Manual and/or when made neces-
sary by mechanical conditions.
zNever operate a vehicle without
proper training or instruction. Take
a training course. Beginners
should receive training from a cer-
tified instructor. Contact a
Yamaha dealer to find out about
the training courses nearest you.
Safe Riding
Perform the pre-operation checks
each time you use the vehicle to make
sure it is in safe operating condition.
Failure to inspect or maintain the vehi-
cle properly increases the possibility of
an accident or equipment damage.
See page 4-1 for a list of pre-operationchecks.
zThis vehicle is designed to carry
the operator and a passenger.
zThe failure of motorists to detect
and recognize scooters and mo-
torcycles in traffic is the predomi-
nating cause of automobile and
such smaller vehicle accidents.
Many accidents have been
caused by an automobile driver
who did not see the smaller vehi-
cle. Making yourself conspicuous
appears to be very effective in re-
ducing the chance of this type of
accident.
Therefore:
• Wear a brightly colored jacket.
• Use extra caution when you are
approaching and passing
through intersections, since in-
tersections are the most likely
places for such smaller vehicle
accidents to occur.
• Ride where other motorists can
see you. Avoid riding in another
motorist’s blind spot.
• Never maintain a vehicle with-
out proper knowledge. Contact
a Yamaha dealer to inform you
on basic vehicle maintenance.
Certain maintenance can only
be carried out by certified staff.
zMany accidents involve inexperi-
enced operators. In fact, many op-
erators who have been involved in
accidents do not even have a cur-
rent driver’s license.
• Make sure that you are qualified
and that you only lend your ve-
hicle to other qualified opera-
tors.
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Instrument and control functions
3-1
3
EAUN0264
Main switch/steering lock
The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
main switch positions are described
below.
TIP
The main switch/steering lock is
equipped with a keyhole shutter. (See
page 3-2 for keyhole shutter opening
and closing procedures.)
EAU65610ON
All electrical circuits are supplied with
power; the meter lighting, taillight, li-
cense plate light and auxiliary lights
come on, and the engine can be start-
ed. The key cannot be removed.
TIP
The headlight comes on automatically
when the engine is started and stays
the sidestand is moved down.
EAU10662OFF
All electrical systems are off. The key
can be removed.
WARNING
EWA10062
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving.
Otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident.
EAU73800LOCK
The steering is locked and all electrical
systems are off. The key can be re-
moved.
To lock the steering
1. Turn the handlebars all the way to
the left.
2. With the key in the “OFF” position,
push the key in and turn it to
“LOCK”.
3. Remove the key.
TIP
If the steering will not lock, try turning
the handlebars back to the right slight-
ly.
LOCKOFF
ON
1. Push.
2. Turn.
12
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Instrument and control functions
3-3
3
EAU4939C
Indicator lights and warning
lights
EAU11032Turn signal indicator lights “ ”
and“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
EAU11081High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAUN0711Eco indicator light “ECO”
This indicator light comes on when the
vehicle is being operated in an environ-
mentally friendly, fuel-efficient manner.
The indicator light goes off when the
vehicle is stopped.
TIP
Consider the following tips to reduce
fuel consumption: zAvoid high engine speeds during
acceleration.
zTravel at a constant speed.
EAU67441Coolant temperature warning
light “ ”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool.
The electrical circuit of the warning
light can be checked by turning the
main switch 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 main switch is turned on,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
NOTICE
ECA10022
Do not continue to operate the en-
gine if it is overheating.
TIP
If the engine overheats, see page 6-36
for further instructions.
EAU73171Engine trouble warning light “ ”
This warning light comes on if a prob-
lem is detected in the engine or other
vehicle control system. If this occurs,
have a Yamaha dealer check the on-
board diagnostic system.
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.
1. Left turn signal indicator light “ ”
2. Anti-lock Brake System (ABS) warning
light “ ” (for ABS models)
3. Coolant temperature warning light “ ”
4. High beam indicator light “ ”
5. Eco indicator light “ECO”
6. Engine trouble warning light “ ”
7. Right turn signal indicator light “ ”
1234567
ABS
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Instrument and control functions
3-4
3If 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 vehicle.
EAUU1961ABS warning light “ ” (for ABS
models)
In normal operation, the ABS warning
light comes on when the main switch is
turned on, and goes off after traveling
at a speed of 10 km/h (6 mi/h) or high-
er.
If the ABS warning light:
zdoes not come on when the main
switch is turned on
zcomes on or flashes while riding
zdoes not go off after traveling at a
speed of 10 km/h (6 mi/h) or high-
er
The ABS may not work correctly. If any
of the above occurs, have a Yamaha
dealer check the system as soon as
possible. (See page 3-11 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.
TIP
The ABS warning light may come on
while accelerating the engine with the
vehicle on its centerstand, but this
does not indicate a malfunction.
ABS
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Instrument and control functions
3-5
3
EAU74444
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:
za speedometer
za fuel meter
za clock
zan outside air temperature display
za multi-function display
zan oil change indicator
za V-belt replacement indicator
TIP
tons.
Speedometer
The speedometer shows the vehicle’s
traveling speed.
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 last seg-
ment of the fuel meter and the fuel level
warning indicator “ ” start flashing,
refuel as soon as possible. When the
key is first turned to “ON”, all the dis-
1. Clock
2. “SELECT” button
3. Fuel level warning indicator “ ”
4. Fuel meter
5. Speedometer
6. “RESET” button
7. Outside air temperature display
8. Multi-function display
9. Oil change indicator “OIL CHANGE”
10.V-belt replacement indicator “V-BELT”
12345 6
9 107
8
1. Speedometer
1. Fuel level warning indicator Ž
2. Fuel meter
1
1
2
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