2016 YAMAHA MT-125 Owners Manual

Periodic maintenance and adjustment
6-31
6
EAU23315
Battery
A poorly maintained battery will cor-
rode and discharge quickly. The elec-
trolyte level, battery lead connections
and breather hose routing should be
checked before each ride and at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.
WARNING
EWA10771
Electrolyte is poisonous and
dangerous since it contains sul-
furic acid, which causes severe
burns. Avoid any contact with
skin, eyes or clothing and al-
ways shield your eyes when
working near batteries. In case
of contact, administer the fol-
lowing FIRST AID.
EXTERNAL: Flush with plenty
of water.
INTERNAL: Drink large quan-
tities of water or milk and im-
mediately call a physician.
EYES: Flush with water for 15
minutes and seek prompt
medical attention.
Batteries produce explosive hy-
drogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and pro-
vide sufficient ventilation when
charging it in an enclosed
space.
Take care not to spill electrolyte
on the drive chain, as this may
weaken it, shorten chain life and
possibly result in an accident.
KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
To check the electrolyte level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
TIP
Make sure that the vehicle is posi-
tioned straight up when checking the
electrolyte level.
2. Check the electrolyte level in the
battery.
TIP
The electrolyte should be between the
minimum and maximum level marks.
3. If the electrolyte is at or below the
minimum level mark, add distilled
water to raise it to the maximum
level mark. NOTICE: Use only
distilled water, as tap water
contains minerals that are
harmful to the battery.
[ECA10612]
4. Check and, if necessary, tighten
the battery lead connections and
correct the breather hose routing.
To store the battery
1. If the motorcycle will not be used
for more than one month, remove
the battery, fully charge it, and
1. Maximum level mark
2. Minimum level mark
1
2+UPPER
LOWER
ZAUM0106
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Periodic maintenance and adjustment
6-32
6then place it in a cool, dry place.
NOTICE: When removing the
battery, be sure the key is
turned to “OFF”, then discon-
nect the negative lead before
disconnecting the positive lead.
[ECA16303]
2. If the battery will be stored for
more than two months, check the
specific gravity of the electrolyte
at least once a month and fully
charge the battery whenever nec-
essary.
3. Fully charge the battery before in-
stallation. NOTICE: When install-
ing the battery, be sure the key
is turned to “OFF”, then connect
the positive lead before con-
necting the negative lead.
[ECA16841]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals
and that the breather hose is prop-
erly routed, in good condition, and
not obstructed. NOTICE: If the
breather hose is positioned in
such a way that the frame is ex-
posed to electrolyte or gas ex-
pelled from the battery, the
frame could suffer structural
and external damages.
[ECA10602]EAUM3461
Replacing the fuses
The fuse boxes, which contains the
fuses for the individual circuits, are lo-
cated under the rider seat. (See page
3-18.)
If a fuse for the individual circuits is
blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
TIP

tool kit. Use the tongs to remove and
install a fuse.
1. Fuse box
ZAUM1188
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Periodic maintenance and adjustment
6-33
6 MT125
MT125A
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
1. Headlight fuse
2. Signaling system fuse
3. Ignition fuse
4. Radiator fan motor fuse
5. Main fuse
6. Backup fuse
7. Spare fuse
1. Headlight fuse
2. Signaling system fuse
3. Ignition fuse
4. Radiator fan motor fuse
5. Main fuse
6. ABS control unit fuse
7. Spare fuse
8. Backup fuse
9. ABS solenoid fuse
10.ABS motor fuse
ZAUM1189
1010
157.5
5207.5 7.515 20
5
7
12
3
45
6
ZAUM1231
10
303020
7
8
91010
157.5
207.5 7.515
5 20
5
7
12
3
45
6
Specified fuses:
Main fuse:
20.0 A
Ignition fuse:
7.5 A
Signaling system fuse:
7.5 A
Headlight fuse:
15.0 A
Radiator fan motor fuse:
5.0 A
ABS control unit fuse:
10.0 A (MT125-A)
ABS motor fuse:
30.0 A (MT125-A)
ABS solenoid fuse:
20.0 A (MT125-A)
Backup fuse:
10.0 A
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Periodic maintenance and adjustment
6-34
6
EAUM3501
Replacing the headlight bulb
This model is equipped with a halogen
bulb headlight. If the headlight bulb
burns out, replace it as follows.
NOTICE
ECA10651
Take care not to damage the follow-
ing parts:
Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.
Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of a
wattage higher than specified.
1. Remove the headlight unit by re-
moving the bolts on each side.2. Disconnect the headlight coupler,
and then remove the headlight
bulb cover.
3. Remove the headlight bulb holder
by turning it counterclockwise,
and then remove the burnt-out
bulb.
1. Do not touch the glass part of the bulb.
1. Bolt
1. Headlight bulb cover
2. Headlight coupler
1. Headlight bulb
2. Headlight bulb holder
ZAUM1220
1
ZAUM1221
21
ZAUM1222
2
1
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Periodic maintenance and adjustment
6-35
6 4. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
5. Install the headlight bulb cover,
and then connect the coupler.
6. Install the headlight unit as shown,
and then install the bolt on each
side.
TIP
Check the wire routing when headlight
unit is installed in order to avoid wire
pinching and coupler disconnection.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU54502
Auxiliary lights
This model is equipped with LED-type
auxiliary lights.
If an auxiliary light does not come on,
have a Yamaha dealer check it.
ZAUM1224
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Periodic maintenance and adjustment
6-36
6
EAU24182
Tail/brake light
This 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.
EAU24205
Replacing a turn signal light
bulb
1. Remove the turn signal light lens
by removing the screw.
2. Remove the burnt-out bulb by
pushing it in and turning it coun-
terclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw. NOTICE: Do not over-
tighten the screw, otherwise the
lens may break.
[ECA11192]
1. Screw
1. Turn signal light bulb
ZAUM1223
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Periodic maintenance and adjustment
6-37
6
EAUM3510
Replacing the license plate
light bulb
1. Remove the license plate light unit
by removing the screw.
2. Remove the license plate light
bulb socket (together with the
bulb) by pulling it out.
3. Remove the burnt-out bulb by
pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with
the bulb) by pushing it in.
6. Install the license plate light unit by
installing the screw.
EAU24351
Supporting the motorcycle
Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other mainte-
nance requiring the motorcycle to
stand upright. Check that the motorcy-
cle is in a stable and level position be-
fore starting any maintenance. A
strong wooden box can be placed un-
der the engine for added stability.
To service the front wheel
1. Stabilize the rear of the motorcy-
cle by using a motorcycle stand
or, if an additional motorcycle
stand is not available, by placing a
jack under the frame in front of the
rear wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
a jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
1. License plate light bulb socket
2. License plate light unit
3. Screw
ZAUM1190
2
3
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Periodic maintenance and adjustment
6-38
6
EAU44792
Front wheel (for non-ABS
models)
WARNING
EWA14841
For the ABS model, have a Yamaha
dealer remove and install the wheel.
EAU56531
To remove the front wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.
1. Loosen the front wheel axle pinch
bolts, then the wheel axle and the
brake caliper bolts.2. Lift the front wheel off the ground
according to the procedure in the
previous section “Supporting the
motorcycle”.
3. Remove the brake caliper by re-
moving the bolts. NOTICE: Do
not apply the brake after the
wheel and brake disc have been
removed, otherwise the brake
pads will be forced shut.
[ECA11073]
4. Pull the wheel axle out, and then
remove the wheel.
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Lower the front wheel so that it is
on the ground.
4. Install the brake caliper by install-
ing the bolts.
TIP
Make sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brake
disc.
5. Tighten the wheel axle to the
specified torque.
1. Axle bolt
2. Front wheel axle pinch bolt A
3. Front wheel axle pinch bolt B
ZAUM12153
1. Brake caliper bolt
2. Brake caliper
ZAUM1192
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