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Periodic maintenance an d a djustment
6-33
6
En
gine overheatin g
WARNING
EWAT1041
Do not remove the ra diator cap when the en gine an d ra diator are hot. Scal din g hot flui d an d steam may be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
Place a thick rag , like a towel, over the ra diator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi dual pressure to escape. When the hissin g soun d has stopped , press down on the cap
while turnin g it counterclockwise, an d then remove the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as 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.
U2CME2E0.book Page 33 Friday, August 21, 2015 9:16 AM
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Specifications
8-1
8
Dimensions:Overall length:1905 mm (75.0 in)
Overall width:
735 mm (28.9 in)
Overall height: 1215 mm (47.8 in)
Seat height: 780 mm (30.7 in)
Wheelbase:
1310 mm (51.6 in)
Ground clearance: 120 mm (4.72 in)
Minimum turning radius: 2300 mm (90.6 in)Wei ght:Curb weight:
152 kg (335 lb) (MW125)
156 kg (344 lb) (MW125A)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement: 124 cm3
Bore × stroke:
52.4 × 57.9 mm (2.06 × 2.28 in)
Compression ratio:
10.9 : 1
Starting system: Electric starter
Lubrication system: Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-40, 20W-40 or 20W-50
Recommended engine oil grade: API service SG type or higher, JASO
standard MA or MB
Engine oil quantity: Periodic oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)Final transmission oil:Type:YAMALUBE 10W-40 or SAE 10W-30 type
SE motor oil
Quantity: 0.20 L (0.21 US qt, 0.18 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):
0.33 L (0.35 US qt, 0.29 Imp.qt)
Radiator (including all routes): 0.37 L (0.39 US qt, 0.33 Imp.qt)
Air filter:Air filter element:Oil-coated paper elementFuel:Recommended fuel:Regular unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity: 6.6 L (1.74 US gal, 1.45 Imp.gal)Fuel injection:Throttle body:
ID mark: 2CM1 00Spark plu g(s):Manufacturer/model:
NGK/CR7E
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:Dry, centrifugal automaticTransmission:Primary reduction ratio:
1.000
Secondary reduction ratio: 9.533 (44/15 x 39/12)
Transmission type: V-belt automaticChassis:Frame type:Underbone
Caster angle: 20.0 °
–20 –10 0 1020 30 40 50 C
10 30 50 70 90 110
0 130 F
SAE 20W-50SAE 20W-40
SAE 10W-40
U2CME2E0.book Page 1 Friday, August 21, 2015 9:16 AM
Page 82 of 87
Specifications
8-3
8
Turn signal indicator light:LED
Coolant temperature warning light: LED
Engine trouble warning light:
LED
ABS warning light: LED (MW125A)Fuse:Main fuse:
20.0 A
Headlight fuse: 15.0 A (MW125)
20.0 A (MW125A)
Signaling system fuse: 10.0 A
ABS control unit fuse: 10.0 A (MW125A)
ABS motor fuse:
30.0 A (MW125A)
ABS solenoid fuse: 20.0 A (MW125A)
Backup fuse: 10.0 A
U2CME2E0.book Page 3 Friday, August 21, 2015 9:16 AM
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10-1
10
Index
AABS (for ABS models) .......................... 3-11
ABS warning light (for ABS models) ....... 3-4
Acceleration and deceleration ................ 5-3
Air filter and V-belt case air filter
elements ............................................. 6-14
Auxiliary DC connector ......................... 3-20
Auxiliary lights....................................... 6-30BBattery .................................................. 6-26
Brake fluid, changing............................ 6-22
Brake fluid level, checking.................... 6-20
Brake lever, front .................................. 3-10
Brake lever, rear ................................... 3-10
Brake levers, lubricating ....................... 6-23
Braking ................................................... 5-3CCables, checking and lubricating ......... 6-22
Care ........................................................ 7-1
Catalytic converter ............................... 3-14
Centerstand and sidestand, checking and lubricating .................... 6-23
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-4DDimmer switch...................................... 3-10EEngine break-in ...................................... 5-4
Engine oil and oil strainer ..................... 6-10
Engine serial number .............................. 9-1
Engine trouble warning light ................... 3-4FFinal transmission oil ............................ 6-12
Front and rear brake pads, checking ... 6-20 Front brake lever free play, checking ... 6-19
Front fork, checking ............................. 6-24
Fuel ...................................................... 3-13
Fuel consumption, tips for reducing ...... 5-3
Fuel tank cap........................................ 3-12
Fuses, replacing ................................... 6-27
HHandlebar switches ............................... 3-9
Headlight bulb, replacing ..................... 6-29
High beam indicator light ....................... 3-4
Horn switch .......................................... 3-10IIdentification numbers ........................... 9-1
Ignition circuit cut-off system .............. 3-18
Indicator lights and warning lights ......... 3-3KKeyhole shutter ...................................... 3-3LLeaning system, checking ................... 6-26
Luggage hook ...................................... 3-17MMain switch/steering lock ...................... 3-1
Maintenance and lubrication, periodic... 6-4
Maintenance, emission control
system ................................................. 6-3
Matte color, caution ............................... 7-1
Model label............................................. 9-1
Multi-function meter unit ........................ 3-5PPanel, removing and installing ............... 6-8
Parking ................................................... 5-4
Part locations ......................................... 2-1
Passenger footrest ............................... 3-15
RRear brake lever free play, checking .... 6-19SSafe-riding points ................................... 1-5
Safety information................................... 1-1
Seat....................................................... 3-15
Self-diagnosis device ............................. 3-5
Sidestand.............................................. 3-17
Spark plug, checking .............................. 6-8
Specifications ......................................... 8-1
Starting off .............................................. 5-2
Starting the engine ................................. 5-1
Start switch ........................................... 3-10
Steering, checking ................................ 6-25
Steering tie rod, checking..................... 6-25
Storage ................................................... 7-4
Storage compartment........................... 3-16TTail/brake light ...................................... 6-30
Throttle grip and cable,
checking and lubricating .................... 6-22
Throttle grip free play, checking ........... 6-16
Tires ...................................................... 6-17
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-31
Troubleshooting charts ......................... 6-32
Turn signal indicator lights...................... 3-3
Turn signal light bulb ............................ 6-31
Turn signal switch ................................. 3-10VValve clearance..................................... 6-16
Vehicle identification number ................. 9-1
U2CME2E0.book Page 1 Friday, August 21, 2015 9:16 AM