2018 YAMAHA MT-03 key

Periodic maintenance an d a djustment
6-29
6
EAU62521
Battery
The battery is located under the rider
seat. (See page 3-18.)
This model is equipped with a VRLA
(Valve Regulated Lead Acid) battery.
There is no need to check the electro-
lyte or to add distilled water. However,
the battery lead connections need to
be checked and, if necessary, tight-
ened.
WARNING
EWA10761
z Electrolyte is poisonous an d
d an gerous since it contains sul-
furic aci d, which causes severe
b urns. Avoi d any contact with
skin, eyes or clothin g an d al-
ways shiel d your eyes when
workin g near b atteries. In case
of contact, ad minister the fol-
lowin g FIRST AID.
EXTERNAL: Flush with plenty of water.
INTERNAL: Drink lar ge quan-
tities of water or milk an d im-
me diately call a physician.
EYES: Flush with water for 15 minutes an d seek prompt
me dical attention. z
Batteries pro duce explosive hy-
d ro gen gas. Therefore, keep
sparks, flames, ci garettes, etc.,
away from the battery an d pro-
vi de sufficient ventilation when
char gin g it in an enclose d
space.
z KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
NOTICE
ECA10621
Never attempt to remove the b attery
cell seals, as this woul d permanently
d amag e the b attery.
To char ge the b attery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
battery tends to discharge more quick-
ly if the vehicle is equipped with op-
tional electrical accessories.
NOTICE
ECA16522
To char ge a VRLA (Valve Re gulate d
Lea d Aci d) battery, a special (con-
stant-volta ge) battery char ger is re-
quire d. Usin g a conventional battery
char ger will d amage the battery.
To store the battery
1. If the vehicle will not be used for more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removin g the
b attery, be sure the key is
turne d to “ ”, then disconnect
the ne gative lea d b efore discon-
nectin g the positive lea d.
[ECA17712]
1. Battery
2. Negative battery lead (black)
3. Positive battery lead (red)
1
2
3
UB9AE0E0.book Page 29 Thursday, March 23, 2017 2:48 PM

Periodic maintenance an d a djustment
6-30
6 2. If the battery will be stored for
more than two months, check it at
least once a month and fully
charge it if necessary.
3. Fully charge the battery before in- stallation. NOTICE: When install-
in g the b attery, be sure the key
is turne d to “ ”, then connect
the positive lea d before con-
nectin g the ne gative lea d.
[ECA17722]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.
NOTICE
ECA16531
Always keep the battery char ged .
Storin g a d ischar ged battery can
cause permanent battery damag e.
EAUN0821
Replacin g the fuses
The main fuse is located under the
passenger seat.
To access the main fuse, proceed as
follows.
1. Remove the passenger seat. (See page 3-18.)
2. Remove the tray by removing the quick fasteners.
3. Pull back the starter relay cover, and then disconnect the starter re-
lay coupler as shown.
4. Connect the starter relay coupler, and then slide the cover to its orig-
inal position.
1. Quick fastener
2. Tray
1. Starter relay cover
2. Starter relay coupler
3. Main fuse
4. Spare main fuse
2 1
1
2
3
4
UB9AE0E0.book Page 30 Thursday, March 23, 2017 2:48 PM

Periodic maintenance an d a djustment
6-31
6
5. Place the tray in its original posi-
tion, and then install the quick fas-
teners.
6. Install the passenger seat.
Fuse box 1 is located behind the center
cover. (See page 3-18.)
Fuse box 1
Fuse box 2 is located under the rider
seat. (See page 3-18.) Fuse
box 2
If a fuse is blown, replace it as follows. 1. Turn the key to “ ” 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 hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive dam-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
1. Fuse box 1
1. Ignition fuse
2. Signaling system fuse
3. ABS control unit fuse
4. Backup fuse (for clock)
5. Headlight fuse
6. Radiator fan motor fuse
7. Spare fuse
1
71
2
3
5
6
4
1. Fuse box 2
1. Spare fuse
2. ABS solenoid fuse
3. ABS motor fuse
1
123
UB9AE0E0.book Page 31 Thursday, March 23, 2017 2:48 PM

Periodic maintenance an d a djustment
6-32
6 3. Turn the key to “ ” 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.
EAU68470
Replacin g the hea dlig ht bul b
This model is equipped with halogen
bulb headlight. If a headlight bulb
burns out, have a Yamaha dealer re-
place it and, if necessary, adjust the
headlight beam.
NOTICE
ECA17871
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
wattag e higher than specified .
Specified fuses:
Main fuse: 30.0 A
Headlight fuse:
15.0 A
Signaling system fuse: 7.5 A
Ignition fuse: 15.0 A
Radiator fan motor fuse:
7.5 A
ABS motor fuse: 30.0 A
ABS solenoid fuse: 15.0 A
ABS control unit fuse:
7.5 A
Backup fuse: 7.5 A
UB9AE0E0.book Page 32 Thursday, March 23, 2017 2:48 PM