2015 YAMAHA MAJESTY S 125 engine

OPERATION AND IMPORTANT RIDING POINTS
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as possible to preserve the bat-
tery. Do not crank the engine more
than 10 seconds on any one at-
tempt.
EAU16762
Starting offTIPBefore starting off, allow the engine towarm up.
1. While pulling the rear brake lever with your left hand and holding the
grab bar with your right hand, push
the scooter off the centerstand.
2. Sit astride the seat, and then ad- just the rear view mirrors.
3. Switch the turn signals on.
4. Check for oncoming traffic, and then slowly turn the throttle grip (on
the right) in order to take off.
5. Switch the turn signals off.
EAU16782
Acceleration and decelerationThe speed can be adjusted by opening
and closing the throttle. To increase the
speed, turn the throttle grip in direction
(a). To reduce the speed, turn the throt-
tle grip in direction (b).
(a) (b)



OPERATION AND IMPORTANT RIDING POINTS
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EAU16794
Braking
WARNING
EWA10301

Avoid braking hard or suddenly
(especially when leaning over to
one side), otherwise the scooter
may skid or overturn.

Railroad crossings, streetcar
rails, iron plates on road con-
struction sites, and manhole
covers become extremely slip-
pery when wet. Therefore, slow
down when approaching such
areas and cross them with cau-
tion.

Keep in mind that braking on a
wet road is much more difficult.

Ride slowly down a hill, as brak-
ing downhill can be very diffi-cult.
1. Close the throttle completely.
2. Apply both front and rear brakes simultaneously while gradually in-
creasing the pressure.
EAU16821
Tips for reducing fuel
consumptionFuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:
Avoid high engine speeds during
acceleration.

Avoid high engine speeds with no
load on the engine.

Turn the engine off instead of let-
ting it idle for an extended length of
time (e.g., in traffic jams, at traffic
lights or at railroad crossings).
EAU16831
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided.
EAUT3541
0–150 km (0–90 mi)
Avoid prolonged operation above 1/3
throttle.
After every hour of operation, stop the
engine, and then let it cool for five to ten
minutes.
Vary the engine speed from time to
time. Do not operate the engine at one
set throttle position.



OPERATION AND IMPORTANT RIDING POINTS
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150–500 km (90–300 mi)
Avoid prolonged operation above 1/2
throttle.
500–1000 km (300–600 mi)
Avoid prolonged operation above 3/4
throttle.
NOTICE: After 1000 km (600
mi) of operation, be sure to change
the engine oil and final transmission
oil, and to clean the oil strain-
er.
[ECA16502]
1000 km (600 mi) and beyond
Avoid prolonged full-throttle operation.
Vary the engine speed occasionally.NOTICE
ECA10271
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealercheck the vehicle.
EAU17214
ParkingWhen parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10312

Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.

Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.

Do not park near grass or other
flammable materials whichmight catch fire.



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PERIODIC MAINTENANCE AND ADJUSTMENT
EAUS1824
Periodic inspection, adjustment, and lu-
brication will keep your vehicle in the
safest and most efficient condition pos-
sible. Safety is an obligation of the vehi-
cle owner/operator. The most important
points of vehicle inspection, adjust-
ment, and lubrication are explained on
the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10322
Failure to properly maintain the ve-
hicle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha dealer performservice.
WARNING
EWA15123
Turn off the engine when performing
maintenance unless otherwise
specified.
A running engine has moving
parts that can catch on body
parts or clothing and electrical
parts that can cause shocks or
fires.

Running the engine while ser-
vicing can lead to eye injury,
burns, fire, or carbon monoxide
poisoning – possibly leading to
death. See page 1-2 for more in-
formation about carbon monox-ide.WARNING
EWA10331
This scooter is designed for use on
paved roads only. If this scooter is
operated in abnormally dusty, mud-
dy or wet conditions, the air filter el-
ement should be cleaned or
replaced more frequently, otherwise
rapid engine wear may result. Con-
sult a Yamaha dealer for propermaintenance intervals.
WARNING
EWA15461
Brake discs, calipers, drums, and
linings can become very hot during
use. To avoid possible burns, let
brake components cool beforetouching them.



PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU17303
Emission controls not only function to
ensure cleaner air, but are also vital to
proper engine operation and maximum
performance. In the following periodic
maintenance charts, the services relat-
ed to emissions control are grouped
separately. These services require
specialized data, knowledge, and
equipment. Maintenance, replacement,
or repair of the emission control devic-
es and systems may be performed by
any repair establishment or individual
that is certified (if applicable). Yamaha
dealers are trained and equipped to
perform these particular services.
EAU17522
Owner’s tool kitThe owner’s tool kit is located inside the
storage compartment under the seat.
(See page 3-10.)
The service information included in this
manual and the tools provided in the
owner’s tool kit are intended to assist
you in the performance of preventive
maintenance and minor repairs. How-
ever, additional tools such as a torque
wrench may be necessary to perform
certain maintenance work correctly.TIPIf you do not have the tools or experi-
ence required for a particular job, havea Yamaha dealer perform it for you.1. Owner’s tool kit
1



PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU46921
Periodic maintenance chart for the emission control systemNO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
(14000 mi)
1 * Fuel line Check fuel hoses for cracks or
damage. √√√√√√
2 Spark plug Check condition.
Clean and regap.
√√
Replace. √√
3 * Valves Check valve clearance.
Adjust. √√√√
4 * Fuel injection Check engine idle speed. √√√√√√
5 * Exhaust system Check for leakage.
Tighten if necessary.
Replace gasket(s) if necessary. √√√√√



PERIODIC MAINTENANCE AND ADJUSTMENT
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12 * Steering bearings Check bearing play and steering
for roughness. √√√√√
Lubricate with lithium-soap-based grease. Every 50000 km (30000 mi)
13 * Chassis fasteners Make sure that all nuts, bolts and
screws are properly tightened. √√√√√
14 Front brake lever
pivot shaft Lubricate with silicone grease.
√√√√√
15 Rear brake lever
pivot shaft Lubricate with silicone grease.
√√√√√
16 Sidestand,
centerstand Check operation.
Lubricate with lithium-soap-based
grease. √√√√√
17 * Sidestand switch Check operation. √√√√√√
18 * Front fork Check operation and for oil
leakage. √√√√
19 * Shock absorber
assembly Check operation and shock
absorber for oil leakage. √√√√
20 Engine oil Change. (See pages 3-5 and
6-10.) √When the oil change indicator flas
hes (after the initial 1000 km
[600 mi] and every 3000 km (1800 mi) thereafter)
Check oil level and vehicle for oil leakage. √
Every 3000 km (1800 mi)
21 Engine oil strainer Clean. √Every 3000 km (1800 mi)
22 * Cooling system Check coolant level and vehicle
for coolant leakage. √√√√√
Change coolant. Every 3 years
23 Final transmission
oil Check vehicle for oil leakage.
√√ √
Change. √√√
24 * V-belt Replace. Every 20000 km (12500 mi)
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
(14000 mi)



PERIODIC MAINTENANCE AND ADJUSTMENT
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9Panel C
To remove the panel
Remove the screw, and then pull the
panel off as shown.
To install the panelPlace the panel in the original position,
and then install the screw.
EAUT1836
Checking the spark plugThe spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Place the vehicle on the center- stand.
2. Remove panel B. (See page 6-8.)
3. Remove the spark plug cap.
4. Remove the spark plug as shown, with the spark plug wrench includ-
ed in the owner’s tool kit.
To check the spark plug 1. Check that the porcelain insulator around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer checkthe vehicle.
2. Check the spark plug for electrode
1. Screw
2. Panel C
2
1
1. Spark plug cap
1
1. Spark plug wrench
1