
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

Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Clutch:Clutch type:
Dry, centrifugal automatic
Transmission:Primary reduction system:
Helical gear
Primary reduction ratio:
41/14 (2.929)
Secondary reduction system:
Helical gear
Secondary reduction ratio:
44/13 (3.385)
Transmission type:
V-belt automatic
Operation:
Centrifugal automatic type
Chassis:Frame type:
Steel tube underbone
Caster angle:
28.00 º
Trail:
100.0 mm (3.94 in)
Front tire:Type:
Tubeless
Size:
120/70-15 M/C 56P(PIRELLI-METZE-
LER)-56S(MICHELIN)
Manufacturer/model:
PIRELLI / GTS23
MICHELIN / GOLD STANDARDMICHELIN / CITYGRIP
METZELER / FEELFREE
Rear tire:Type:
Tubeless
Size:
140/70-14 M/C 68P(PIRELLI-METZE-
LER)-68S(MICHELIN)
Manufacturer/model:
PIRELLI / GTS24
MICHELIN / GOLD STANDARD
MICHELIN / CITYGRIP
METZELER / FEELFREE
Loading:Maximum load:
YP125R 182 kg (401 lb)
YP125RA 179 kg (395 lb)
YP125R Sport 180.5 kg (398 lb)
YP125RA Business 171.8 kg (379 lb)
Tire air pressure (measured on cold
tires):
Loading condition:
0–90 kg (0–198 lb)
Front:
190 kPa (1.90 kgf/cm
2, 28 psi, 1.90 bar)
Rear:
220 kPa (2.20 kgf/cm
2, 32 psi, 2.20 bar)
Loading condition:
90 kg - maximum load
Front:
210 kPa (2.10 kgf/cm
2, 30 psi, 2.10 bar)
Rear:
250 kPa (2.50 kgf/cm
2, 36 psi, 2.50 bar)
Front wheel:Wheel type:
Cast wheel
Rim size:
15 x MT3.5
Rear wheel:Wheel type:
Cast wheel
Rim size:
14 x MT3.75
Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4
Rear brake:Type:
Single disc brake
Operation:
Left hand operation
Recommended fluid:
DOT 4
Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
110.0 mm (4.33 in)
Rear suspension:Type:
Unit swing
SPECIFICATIONS
8-2
8

Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
95.0 mm (3.74 in)
Electrical system:Ignition system:
TCI
Charging system:
AC magneto
Battery:Model:
GTX9-BS
Voltage, capacity:
12 V, 8.0 Ah
Headlight:Bulb type:
Halogen bulb
Bulb voltage, wattage x quantity:Low beam headlight:
12 V, 55.0 W x 1
High beam headlight:
12 V, 55.0 W x 1
Tail/brake light:
12 V, 5.0 W/21.0 W x 2
Front turn signal light:
12 V, 10.0 W x 2
Rear turn signal light:
12 V, 10.0 W x 2
Auxiliary light:
12 V, 5.0 W x 2
License plate light:
12 V, 5.0 W x 1
Meter lighting:
12 V, 2.0 W x 3High beam indicator light:
12 V, 1.4 W x 1
Turn signal indicator light:
12 V, 1.4 W x 2
Engine trouble warning light:
12 V, 1.4 W x 1
ABS warning light (for ABS models):
12 V, 1.4 W x 1
Immobilizer system indicator light:
LED
Fuses:Main fuse:
30.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Radiator fan fuse:
7.5 A
Hazard fuse:
10.0 A
ECU fuse:
5.0 A
ABS control unit fuse (for ABS models):
5.0 A
ABS motor fuse (for ABS models):
30.0 A
ABS solenoid fuse (for ABS models):
20.0 A
Backup fuse:
5.0 A
SPECIFICATIONS
8-3
8

AABS (for ABS models)..............................3-13
ABS warning light (for ABS models) ..........3-4
Acceleration and deceleration ...................5-3
Air filter and V-belt case air filter
elements ................................................6-16
Anti-theft alarm (optional) ........................3-11
Auxiliary light bulb, replacing ...................6-31
BBattery......................................................6-26
Brake fluid level, checking .......................6-22
Brake fluid, changing ...............................6-23
Brake lever, front ......................................3-12
Brake lever, rear .......................................3-13
Brake levers, lubricating ..........................6-24
Braking .......................................................5-3
CCare............................................................7-1
Catalytic converters .................................3-16
Centerstand and sidestand, checking
and lubricating .......................................6-24
Coolant.....................................................6-14
Cowling and panel, removing and
installing ...................................................6-8
DDimmer switch .........................................3-12
EEngine break-in ..........................................5-4
Engine oil .................................................6-10
Engine trouble warning light ......................3-4
FFinal transmission oil ...............................6-13
Front and rear brake lever free play,
checking ................................................6-20Front and rear brake pads, checking ......6-21
Front fork, checking .................................6-25
Fuel ..........................................................3-15
Fuel consumption, tips for reducing ..........5-4
Fuel tank cap ...........................................3-14
Fuses, replacing .......................................6-28
HHandlebar switches .................................3-11
Hazard switch ..........................................3-12
Headlight bulb, replacing .........................6-29
High beam indicator light...........................3-4
Horn switch ..............................................3-12
IIdentification numbers ...............................9-1
Ignition circuit cut-off system ..................3-22
Immobilizer system ....................................3-1
Immobilizer system indicator light .............3-5
Indicator and warning lights ......................3-4
LLicense plate light bulb, replacing ...........6-31
MMain switch/steering lock ..........................3-2
Maintenance and lubrication, periodic ......6-4
Maintenance, emission control system .....6-3
Matte color, caution ...................................7-1
Model label ................................................9-1
Multi-function display ................................3-6
PParking .......................................................5-5
Part locations .............................................2-1
Pass switch ..............................................3-11
SSafe-riding points.......................................1-5
Safety information ......................................1-1Seat ..........................................................3-17
Securing bracket ......................................3-16
Shock absorber assemblies, adjusting....3-19
Sidestand .................................................3-22
Spark plug, checking .................................6-9
Specifications.............................................8-1
Speedometer .............................................3-5
Start switch ..............................................3-12
Starting off .................................................5-2
Starting the engine.....................................5-1
Steering, checking ...................................6-26
Storage.......................................................7-3
Storage compartments ............................3-18
TTachometer ................................................3-6
Tail/brake light bulb or rear turn signal
light bulb, replacing ...............................6-30
Throttle cable free play, adjusting ............6-17
Throttle grip and cable, checking and
lubricating ..............................................6-23
Tires .........................................................6-18
Travel trunk...............................................3-20
Tool kit ........................................................6-2
Troubleshooting .......................................6-31
Troubleshooting charts ............................6-33
Turn signal indicator lights .........................3-4
Turn signal light bulb (front), replacing ....6-30
Turn signal switch ....................................3-12
VValve clearance ........................................6-18
Vehicle identification number .....................9-1
WWheel bearings, checking........................6-26
Wheels .....................................................6-20
INDEX