
Periodic maintenance an d a djustment
6-10
6
EAU61002
En gine oil an d oil strainerThe engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil strainer
cleaned at the intervals specified in the
periodic maintenance and lubrication
chart.
To check the en gine oil level
1. Place the vehicle on the center- stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles, remove the engine oil filler
cap, wipe the engine oil dipstick
clean, insert it back into the oil fill-
er hole (without screwing it in), and
then remove it again to check the
oil level. WARNING! The muffler
an d muffler protector become
very hot during use. To avoi d
possi ble burns, let the muffler
an d protector cool before re-
moving the oil filler cap.
[EWA17810]
TIPThe engine oil should be between the
tip of the dipstick and the maximum
level mark.4. If the engine oil is not between the
tip of the dipstick and the maxi-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Insert the dipstick into the oil filler hole, and then tighten the oil filler
cap. To chan
ge the en gine oil an d clean
the oil strainer 1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap and engine oil drain bolts A and B
to drain the oil from the crankcase.
NOTICE: When removin g the
en gine oil d rain bolt B, the O-
rin g, compression sprin g, an d
oil strainer will fall out. Take
care not to lose these parts.
[ECAT1022]
1. Engine oil filler cap
2. Engine oil dipstick
3. Maximum level mark
4. Tip of the engine oil dipstick
1
234
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Periodic maintenance an d a djustment
6-13
6
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU40157
To check the coolant level
1. Place the vehicle on the center- stand.TIPThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.2. Check the coolant level in the
coolant reservoir.TIPThe coolant should be between the
minimum and maximum level marks.
3. If the coolant is at or below theminimum level mark, remove the
coolant reservoir cap. WARNING!
Remove only the coolant reser-
voir cap. Never attempt to re-
move the ra diator cap when the
en gine is hot.
[EWA15162]
4. Add coolant or distilled water to
raise the coolant to the maximum
level mark, install the coolant res-
ervoir cap. NOTICE: If coolant is
not availab le, use distille d water
or soft tap water instea d. Do not
use har d water or salt water
since it is harmful to the en gine. If water has
been used instead
of coolant, replace it with cool-
ant as soon as possi ble, other-
wise the coolin g system will not
b e protecte d a gainst frost an d
corrosion. If water has been
a dd ed to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possi ble, otherwise the
effectiveness of the coolant will
b e re duce d.
[ECA10473]
EAU33032
Changin g the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the ra diator cap when the en gine is
hot.
[EWA10382]
1. Coolant reservoir cap
2. Coolant reservoir
3. Maximum level mark
4. Minimum level mark
12
34
Coolant reservoir capacity (up to
the maximum level mark): 0.33 L (0.35 US qt, 0.29 Imp.qt)
U2CME2E0.book Page 13 Friday, August 21, 2015 9:16 AM

Periodic maintenance an d a djustment
6-28
6 MW125 MW125A
If a fuse is blown, replace it as follows.1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Open the seat. (See page 3-15.)
3. Remove the fuse box cover as shown. 4. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive d am-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
1. Backup fuse (for clock)
2. Signaling system fuse
3. Headlight fuse
4. Spare fuse
123
4
1. Backup fuse (for clock)
2. Signaling system fuse
3. Headlight fuse
4. ABS control unit fuse
5. ABS motor fuse
6. ABS solenoid fuse
7. Spare fuse
12345
6
7
1. Fuse box cover
1
U2CME2E0.book Page 28 Friday, August 21, 2015 9:16 AM

Periodic maintenance an d a djustment
6-29
6
5. Turn the key to “ON” and turn on the electrical circuit in question to
check if the device operates.
6. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
7. Install the fuse box cover, and then close the seat.
EAU23765
Replacin g the hea dlig ht bul bThis model is equipped with a halogen
bulb headlight. If the headlight bulb
burns out, replace it as follows.NOTICE
ECA10651
Take care not to damag e the follow-
in g parts:
Hea dlig ht bul b
Do not touch the glass part of
the hea dlig ht bul b to keep it free
from oil, otherwise the transpar-
ency of the g lass, the luminosity
of the b ulb, an d the b ulb life will
b e ad versely affected . Thor-
ou ghly clean off any d irt and fin-
g erprints on the hea dlig ht bul b
using a cloth moistene d with al-
cohol or thinner.
Hea dlig ht lens
Do not affix any type of tinted
film or stickers to the head light
lens.
Do not use a hea dlig ht bul b of a
watta ge hi gher than specifie d.
1. Disconnect the headlight coupler,
and then remove the headlight
bulb cover.
2. Unhook the headlight bulb holder, and then remove the burnt-out
bulb.
Specifie d fuses:
Main fuse:
20.0 A
Headlight fuse:
15.0 A (MW125)
20.0 A (MW125A)
Signaling system fuse:
10.0 A
ABS motor fuse: 30.0 A (MW125A)
ABS solenoid fuse: 20.0 A (MW125A)
ABS control unit fuse:
10.0 A (MW125A)
Backup fuse: 10.0 A
1. Do not touch the glass part of the bulb.
1. Headlight coupler
2. Headlight bulb cover
12
U2CME2E0.book Page 29 Friday, August 21, 2015 9:16 AM

Periodic maintenance an d a djustment
6-30
6 3. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
4. Install the headlight bulb cover, and then connect the coupler.
5. Have a Yamaha dealer adjust the headlight beam if necessary.
EAU54502
Auxiliary li ghtsThis model is equipped with LED-type
auxiliary lights.
If an auxiliary light does not come on,
have a Yamaha dealer check it.
EAU24182
Tail/ brake li ghtThis model is equipped with an LED-
type tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
1. Headlight bulb holder
1
1. Auxiliary light
1
U2CME2E0.book Page 30 Friday, August 21, 2015 9:16 AM

Periodic maintenance an d a djustment
6-31
6
EAU61170
Turn si gnal li ght bul bIf a turn signal light does not come on,
have a Yamaha dealer check its electri-
cal circuit or replace the bulb.
EAU60700
Trou bleshootin gAlthough Yamaha vehicles receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your vehicle re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the vehicle prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot li ghts from water heaters or furnaces. Gasoline or
g
asoline vapors can i gnite or ex-
plo de, causin g severe injury or prop-
erty damag e.
U2CME2E0.book Page 31 Friday, August 21, 2015 9:16 AM

Vehicle care and stora ge
7-3
7 thoroughly with water. For additional
cleaning, use Yamaha Windshield
Cleaner or another high-quality wind-
shield cleaner. Some cleaning com-
pounds for plastics may leave
scratches on the windshield. Before
using such cleaners, test an area of the
windshield which does not affect your
visibility and which cannot be easily
recognized.
After cleaning
1. Dry the vehicle with a chamois or an absorbing cloth.
2. Use a chrome polish to shine chrome, aluminum, and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved through polishing.)
3. To prevent corrosion, it is recom- mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed surfaces.
4. Use spray oil as a universal clean- er to remove any remaining dirt. 5. Touch up minor paint damage
caused by stones, etc.
6. Wax all painted surfaces.
7. Let the vehicle dry completely be- fore storing or covering it.
WARNING
EWA17830
Contaminants on the brakes or tires
can cause loss of control. Make sure that there is no oil or
wax on the b rakes or tires. If
necessary, clean the brake
d iscs an d b rake linin gs with a
re gular brake disc cleaner or
acetone, an d wash the tires with
warm water an d a mil d d eter-
g ent.
Before operating the vehicle
test its brakin g performance
an d cornerin g b ehavior.NOTICE
ECAU0022
Apply spray oil an d wax spar-
in gly an d make sure to wipe off
any excess.
Never apply oil or wax to any
rubber parts, plastic parts or
hea dlig ht, tailli ght an d meter
lenses, but treat them with a
suita ble care prod uct.
Avoi d usin g a brasive polishin g
compoun ds as they will wear
away the paint.
TIP Consult a Yamaha dealer for ad-
vice on what products to use.
Washing, rainy weather or humid
climates can cause the headlight
lens to fog. Turning the headlight
on for a short period of time will
help remove the moisture from the
lens.
U2CME2E0.book Page 3 Friday, August 21, 2015 9:16 AM

Specifications
8-2
8
Trail:68 mm (2.7 in)
Track: 385 mm (15.2 in)Front tire:Type:Tubeless
Size: 90/80-14M/C 43P
Manufacturer/model:
CHENG SHIN/M6231Rear tire:Type:Tubeless
Size:
110/90-12 64P
Manufacturer/model: CHENG SHIN/M6232Loa din g:Maximum load:
169 kg (373 lb)
(Total weight of rider, passenger, cargo
and accessories)Tire air pressure (measure d on col d
tires):
Front:
175 kPa (1.75 kgf/cm2, 25 psi)
Rear: 225 kPa (2.25 kgf/cm2, 33 psi)
Front wheel:Wheel type:Cast wheel
Rim size: 14M/C x MT2.15
Rear wheel:Wheel type:Cast wheel
Rim size:
12 x MT2.15Unifie d b rake system:Operation:
Activated by rear brakeFront brake:Type:
Disc brake
Operation: Right hand operation
Specified brake fluid:
DOT 4Rear brake:Type:
Disc brake
Operation:
Left hand operation
Specified brake fluid: DOT 4Front suspension:Type:
Telescopic fork
Spring/shock absorber type: Coil spring/oil damper
Wheel travel: 90 mm (3.5 in)Rear suspension:Type:Unit swing
Spring/shock absorber type: Coil spring/oil damper Wheel travel:
89 mm (3.5 in)
Electrical system:System voltage:
12 V
Ignition system: TCI
Charging system: AC magnetoBattery:Model:YTZ7V
Voltage, capacity: 12 V, 6.0 AhHea dlig ht:Bulb type:
Halogen bulbBul b volta ge, watta ge × quantity:Headlight:
12 V, 55.0 W/60.0 W × 1 (MW125)
12 V, 60.0 W/55.0 W × 1 (MW125A)
Brake/tail light:
LED
Front turn signal light: 12 V, 10.0 W × 2
Rear turn signal light: 12 V, 10.0 W × 2
Auxiliary light:
LED
Meter lighting: LED
High beam indicator light: LED
U2CME2E0.book Page 2 Friday, August 21, 2015 9:16 AM