PERIODIC MAINTENANCE AND ADJUSTMENT
6-31
6
EAU43051
Replacing a front turn signal
light bulb 1. Place the scooter on the center-
stand.
2. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
3. Remove the burnt-out bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by turning it clockwise.
EAUM2860
Replacing a tail/brake light
bulb or a rear turn signal light
bulb 1. Place the vehicle on the center-
stand.
2. Open the seat. (See page 3-17.)
3. Remove panel A. (See page 6-8.)
4. Remove the tail/brake light unit by
removing the screws.TIPFor the Business version, the rear car-
rier and travel trunk are not shown for
better understanding.
For the Sport version, the backrest is
not shown for better understanding.
TIPThis model can be equipped with two
different types of tail/brake and rear
turn signal units.Tail/brake light unit type A
1. Remove the tail/brake light and
turn signal light bulb holder togeth-
er with the dust protector by press-
ing the tab, and then pulling both
outward.
1. Turn signal light bulb
2. Turn signal light bulb socket
1. Screw
1. Dust protector
2. Tab
U2ABE2E0.book Page 31 Thursday, August 30, 2012 2:36 PM
SPECIFICATIONS
8-1
8
Dimensions:Overall length:
YP125R 2201 mm (86.7 in)
YP125RA 2201 mm (86.7 in)
YP125R Sport 2201 mm (86.7 in)
YP125RA Business 2370 mm (93.3 in)
Overall width:
776 mm (30.6 in)
Overall height:
YP125R 1214 mm (47.8 in)
YP125RA 1337 mm (52.6 in)
YP125R Sport 1337 mm (52.6 in)
YP125RA Business 1387 mm (54.6 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:Curb weight:
YP125R 174 kg (385 lb)
YP125RA 183 kg (403 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement:
124 cm³
Bore × stroke:
52.0 × 58.6 mm (2.05 × 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, 10W-40, 15W-40, 20W-40 or
20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard 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
maximum 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 elementFuel:Recommended fuel:
Premium 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)Fuel injection:Throttle body:
ID mark:
1B91 00Spark plug(s):Manufacturer/model:
NGK/CPR9EA-9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:
Dry, centrifugal automatic
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
