Periodic maintenance an d a djustment
6-13
6
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU40157
To check the coolant level
1. Place the vehicle on the center- stand.TIPThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.2. Check the coolant level in the
coolant reservoir.TIPThe coolant should be between the
minimum and maximum level marks.
3. If the coolant is at or below theminimum level mark, remove the
coolant reservoir cap. WARNING!
Remove only the coolant reser-
voir cap. Never attempt to re-
move the ra diator cap when the
en gine is hot.
[EWA15162]
4. Add coolant or distilled water to
raise the coolant to the maximum
level mark, install the coolant res-
ervoir cap. NOTICE: If coolant is
not availab le, use distille d water
or soft tap water instea d. Do not
use har d water or salt water
since it is harmful to the en gine. If water has
been used instead
of coolant, replace it with cool-
ant as soon as possi ble, other-
wise the coolin g system will not
b e protecte d a gainst frost an d
corrosion. If water has been
a dd ed to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possi ble, otherwise the
effectiveness of the coolant will
b e re duce d.
[ECA10473]
EAU33032
Changin g the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the ra diator cap when the en gine is
hot.
[EWA10382]
1. Coolant reservoir cap
2. Coolant reservoir
3. Maximum level mark
4. Minimum level mark
12
34
Coolant reservoir capacity (up to
the maximum level mark): 0.33 L (0.35 US qt, 0.29 Imp.qt)
U2CME2E0.book Page 13 Friday, August 21, 2015 9:16 AM
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
