1. Floorboard mat
4. Open the reservoir cap, and then
add coolant to the maximum
level mark. WARNING! Remove
only the coolant reservoir cap.
Never attempt to remove the
radiator cap when the engine is
hot.
[EWA15161]
NOTICE: If coolant is not avai-
lable, use distilled water or soft
tap water instead. Do not use
hard water or salt water since it
is harmful to the engine. If
water has been used instead of
coolant, replace it with coolant
as soon as possible, otherwise
the cooling system will not be
protected against frost andcorrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant
as soon as possible, otherwise
the effectiveness of the coolant
will be reduced.
[ECA10472]
1. Coolant reservoir cap
5. Close the reservoir cap
6. Place the floorboard mat in the
original position and push it
downward to secure it.
EAU33031
Changing the coolant
The coolant must be changed at the
intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer change the
coolant. WARNING! Never attempt
to remove the radiator cap when
the engine is hot.
[EWA10381]
Coolant reservoir capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
PERIODIC MAINTENANCE AND ADJUSTMENT
6-15
6
Dimensions:Overall length:
YP125R 2201 mm (86.7 in)
YP125RA 2201 mm (86.7 in)
YP125R Sport 2201 mm (86.7 in)
YP125RA Business 2290 mm (90.2 in)
Overall width:
776 mm (30.6 in)
Overall height:
YP125R 1337 mm (52.6 in)
YP125RA 1337 mm (52.6 in)
YP125R Sport 1186 mm (46.7 in)
YP125RA Business 1378 mm (54.3 in)
Seat height:
792 mm (31.2 in)
Wheelbase:
1535 mm (60.4 in)
Ground clearance:
135 mm (5.31 in)
Minimum turning radius:
1805 mm (71.1 in)
Weight:With oil and fuel:
YP125R 173 Kg (381 lb)
YP125RA 176 Kg (388 lb)
YP125R Sport 174.5 Kg (385 lb)
YP125RA Business 183.2 Kg (404 lb)
Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinderDisplacement:
124 cm
3
Bore x stroke:
52.0 x 58.6 mm (2.05 x 2.31 in)
Compression ratio:
11.20 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, SAE 10W-40, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO stan-
dard MA
Engine oil quantity:Without oil filter element replacement:
1.40 L (1.48 US qt, 1.23 Imp.qt)With oil filter element replacement:
1.50 L (1.59 US qt, 1.32 Imp.qt)
Final transmission oil:Type:
YAMALUBE 10W-40 or SAE 10W-30 type
SE motor oil
Quantity:
0.21 L (0.22 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):
1.00 L (1.06 US qt, 0.88 Imp.qt)
Air filter:Air filter element:
Oil-coated paper element
Fuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
11.8 L (3.12 US gal, 2.60 Imp.gal)
Fuel reserve amount:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Spark plug(s):Manufacturer/model:
NGK/CPR9EA-9
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40
SAE 20W-40
SAE 20W-50
SAE 10W-40
SAE 10W-50
SPECIFICATIONS
8-1
8
