2015 YAMAHA MAJESTY S 125 engine coolant

PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
1
2
3
4
56
7
8
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.



8-1
2
3
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5
6
789
SPECIFICATIONS
EAU5091K
Dimensions:Overall length:2030 mm (79.9 in)
Overall width: 715 mm (28.1 in)
Overall height: 1295 mm (51.0 in)
Seat height:
795 mm (31.3 in)
Wheelbase: 1405 mm (55.3 in)
Ground clearance: 93 mm (3.66 in)
Minimum turning radius:
2100 mm (82.7 in)Weight:Curb weight:148 kg (326 lb)Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement:
125 cm
3
Bore × stroke:
52.0 × 58.7 mm (2.05 × 2.31 in)
Compression ratio: 11.0 : 1
Starting system:
Electric starter
Lubrication system: Wet sump
Engine oil:Type:
SAE 10W-40
Recommended engine oil grade: API service SG type or higher, JASO stan-
dard MA or MB
*Engine oil quantity: Periodic oil change:
0.95 L (1.00 US qt, 0.84 Imp.qt)Final transmission oil:Type:SAE 10W-30 type SE motor oil
Quantity:
0.20 L (0.21 US qt, 0.18 Imp.qt)Cooling system:Coolant reservoir capacity (up to the maxi-
mum level mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes): 0.56 L (0.59 US qt, 0.49 Imp.qt)
Air filter:Air filter element:Oil-coated paper elementFuel:Recommended fuel:Regular unleaded gasoline
Fuel tank capacity:
7.4 L (1.96 US gal, 1.63 Imp.gal)Fuel injection:*Throttle body:ID mark:52S1 01Spark plug(s):Manufacturer/model:
NGK / CPR8EA
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction ratio:1.000
Final drive:
Gear
Secondary reduction ratio: 8.787 (45 / 13 × 33 / 13)
Transmission type: V-belt automaticChassis:Frame type:Backbone
Caster angle: 26.00 °
–20 –10 0 1020 30 40 50 C
10 30 50 70 90 110
0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50



SPECIFICATIONS
8-3
2
3
4
5
6
789
Meter lighting:LED
High beam indicator light:
LED
Turn signal indicator light: LED
Coolant temperature warning light: LED
Engine trouble warning light:
LEDFuses:Main fuse:20.0 A
Signaling system fuse:
7.5 A× 2
Ignition fuse: 7.5 A
Backup fuse: 7.5 A



INDEXAAcceleration and deceleration....................5-2
Air filter and V-belt case air filter
elements ................................................6-15
Auxiliary light ............................................6-30BBattery......................................................6-25
Brake fluid, changing ...............................6-22
Brake fluid level, checking .......................6-21
Brake lever, front........................................3-7
Brake lever, rear ........................................3-7
Brake levers, lubricating...........................6-23
Braking .......................................................5-3CCables, checking and lubricating .............6-22
Care ...........................................................7-1
Catalytic converter ...................................3-10
Centerstand and sidestand, checking and
lubricating ..............................................6-23
Coolant.....................................................6-13
Coolant temperature warning light .............3-3DDimmer switch ...........................................3-7EEngine break-in ..........................................5-3
Engine idling speed, checking .................6-16
Engine oil .................................................6-10
Engine serial number .................................9-1
Engine trouble warning light.......................3-3FFinal transmission oil ...............................6-12
Front and rear brak e lever free play,
checking ................................................6-20
Front and rear brake pads, checking .......6-20 Front fork, checking ................................. 6-24
Front turn signal light ............................... 6-28
Fuel............................................................ 3-8
Fuel consumption, tips
for reducing........... 5-3
Fuel gauge................................................. 3-4
Fuel tank breather hose and overflow hose ........................................................ 3-9
Fuel tank cap ............................................. 3-8
Fuses, replacing ...................................... 6-27
HHandlebar switches ................................... 3-6
Headlight bulb, replacing ......................... 6-28
Helmet holder .......................................... 3-11
High beam indicator light ........................... 3-2
Horn switch ................................................ 3-7IIdentification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-15
Indicator lights and warning lights ............. 3-2KKeyhole cover ............................................ 3-2LLicense plate light bulb, replacing ........... 6-30
Luggage hook .......................................... 3-14MMain switch/steering lock........................... 3-1
Maintenance and lubrication, periodic ....... 6-5
Maintenance, emission control system...... 6-4
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
Multi-function display ................................. 3-4PPanels, removing and installing ................. 6-8
Parking ...................................................... 5-4 Part locations ............................................ 2-1
Passenger footrest .................................. 3-11
Pass switch ............................................... 3-7
SSafe-riding points ...................................... 1-5
Safety information ..................................... 1-1
Seat ......................................................... 3-10
Shock absorber assembly ....................... 3-13
Sidestand ................................................ 3-14
Spark plug, checking ................................. 6-9
Specifications ............................................ 8-1
Starting off ................................................. 5-2
Starting the engine .................................... 5-1
Start switch................................................ 3-7
Steering, checking................................... 6-25
Storage...................................................... 7-4
Storage compartments ............................ 3-12TTachometer ............................................... 3-3
Tail/brake light ......................................... 6-28
Throttle grip and cable, checking and
lubricating ............................................. 6-22
Throttle grip free play, checking .............. 6-17
Tires ........................................................ 6-17
Tool kit....................................................... 6-2
Troubleshooting ...................................... 6-30
Troubleshooting charts............................ 6-32
Turn signal indicator lights ........................ 3-2
Turn signal light bulb (rear), replacing..... 6-29
Turn signal switch ..................................... 3-7VValve clearance....................................... 6-17
Vehicle identification number .................... 9-1