YAMAHA MAJESTY S 125 2015 Repair Manual

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in a possible loss of control.
EAU23273
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake, push down hard on the handlebars several times to check if the front
fork compresses and rebounds
smoothly.
NOTICE
ECA10591
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
Recommended lubricant:
Lithium-soap-based grease



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EAU45512
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.1. Place the vehicle on the center- stand. WARNING! To avoid inju-
ry, securely support the vehicle
so there is no danger of it falling
over.
[EWA10752]
2. Hold the lower ends of the front fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
EAU23292
Checking the w heel bearingsThe front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.
EAUT4120
BatteryThe battery is located behind panel A.
(See page 6-8.)
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, securely
tightened.
WARNING
EWA10761

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-
1. Battery
1



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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.

KEEP THIS AN D ALL BATTER-
IES OUT OF THE REACH OFCHILDREN.
To charge the battery
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 quickly if the vehicle is equipped with optional
electrical accessories.
NOTICE
ECA16522
To charge a VRLA (Valve Regulated
Lead Acid) battery, a special (con-
stant-voltage) battery charger is re-
quired. Using a conventional batterycharger will damage the battery.
To store the battery
1. If the model will not be used for more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place. NO-
TICE: When removing the bat-
tery, be sure the key is turned to
“OFF”, then disconnect the neg-
ative lead before disconnecting
the positive lead.
[ECA16303]
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-
ing the battery, be sure the key
is turned to “OFF”, then con- nect the positive lead before
connecting the negative
lead.
[ECA16841]
4. After installing the battery, make
sure that the battery leads are
properly connected to the battery
terminals.
5. Turn the key from “ON” to “OFF” three times in three-second inter-
vals to initialize the idle speed con-
trol system.NOTICE
ECA16531
Always keep the battery charged.
Storing a discharged battery cancause permanent battery damage.



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EAUT4220
Replacing the fusesMain fuse
The main fuse is located behind panel
A. (See page 6-8.)
If the main fuse is blown, replace it as
follows.1. Turn the key to “OFF”.
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]
3. Turn the key to “ON” to check if the vehicle operates normally. If the
main fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
4. After removing and installing the
main fuse, turn the main switch
from “ON” to “OFF” three times in
three-second intervals to initialize
the idle speed control system.
Fuse box
The fuse box, which contains the fuses
for the ignition, turn signal, and lighting
systems, as well as the back-up fuse
for the multi-function meter unit, is lo-
cated underneath the windshield be-
hind the front cowling. Have a Yamaha
dealer check and replace these fuses if
necessary.
1. Main fuse
1
Specified fuses: Main fuse: 20.0 A
Specified fuses:Lighting fuse: 15.0 A
Signaling system fuse:
7.5 A× 2
Ignition fuse: 7.5 A
Backup fuse: 7.5 A



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EAU24051
Replacing the headlight bulbHave a Yamaha dealer replace the
headlight bulb and, if necessary, adjust
the headlight beam.
EAU24182
Tail/brake lightThis 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.
EAU39881
Front turn signal lightIf a front turn signal light does not come
on, have a Yamaha dealer check its
electrical circuit or replace the bulb.



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EAUT4190
Replacing a rear turn signal
light bulb1. Remove the turn signal light lensby removing the screws.
2. Remove the socket (together with the turn signal light bulb) by turning
it counterclockwise. 3. Remove the burnt-out bulb by
pushing it in and turning it counter-
clockwise.
4. Insert a new bulb into the socket by aligning the tabs on the bulb
base with the slots in the socket, push the bulb in, and then turn it
clockwise.
5. Install the socket (together with the bulb) into the lens by turning it
clockwise.
6. Install the lens by installing the screws. NOTICE: Do not over-
tighten the screws, otherwise
the lens may break.
[ECA10682]
1. Turn signal light lens
1
1. Turn signal light bulb socket
1. Turn signal light bulb
11



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EAUT4110
Replacing a license plate light
bulb1. Remove the license plate light bulbsocket (together with the bulb) by
turning it counterclockwise, and
then pulling it out.
2. Remove the burnt-out bulb by pull- ing it out.
3. Insert a new bulb into the socket.
4. Install the socket (together with the bulb) by pushing it in, and then turn
it clockwise until it stops.
EAU54501
Auxiliary lightThis model is equipped with LED-type
auxiliary lights.
If an auxiliary light does not come on,
have a Yamaha dealer check it.
EAU25882
TroubleshootingAlthough Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing 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 scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
1. License plate light bulb socket
1



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9heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.


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EAU42706
Troubleshooting chartsStarting problems or poor engine performanceCheck the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.Have a Yamaha dealer check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug. Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Operate the electric starter.
Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
The engine does not start.
Check the ignition.



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9Engine overheating
WARNING
EWAT1041

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the capwhile turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily us
ed instead, provided that it is changed to the recommended coolantas soon as possible.Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.