SAFETY INFORMATION .....................1-1
Further safe-riding points .................1-5
DESCRIPTION.....................................2-1
Left view ...........................................2-1
Right view .........................................2-3
Controls and instruments .................2-5
INSTRUMENT AND CONTROL
FUNCTIONS ........................................3-1
Immobilizer system ...........................3-1
Main switch/steering lock .................3-2
Indicator and warning lights .............3-4
Turn signal indicator lights ...............3-4
High beam indicator light ................3-4
Engine trouble warning light ............3-4
ABS warning light
(for ABS models) ...........................3-4
Immobilizer system indicator light ....3-5
Speedometer ....................................3-5
Tachometer .......................................3-6
Multi-function display .......................3-6
Anti-theft alarm (optional) ...............3-11
Handlebar switches ........................3-11
Pass switch ....................................3-12
Dimmer switch ...............................3-12
Turn signal switch ..........................3-12
Horn switch ...................................3-12
Start switch ....................................3-12
Hazard switch ................................3-12
Front brake lever.............................3-12Rear brake lever..............................3-13
ABS (for ABS models) ....................3-13
Fuel tank cap ..................................3-14
Fuel .................................................3-15
Catalytic converters ........................3-16
Securing bracket ............................3-17
Seat.................................................3-17
Storage compartments ...................3-18
Adjusting the shock absorber
assemblies...................................3-19
Travel trunk .....................................3-20
Sidestand ........................................3-22
Ignition circuit cut-off system .........3-22
FOR YOUR SAFETY –
PRE-OPERATION CHECKS ...............4-1
OPERATION AND IMPORTANT
RIDING POINTS ..................................5-1
Starting the engine ...........................5-1
Starting off ........................................5-2
Acceleration and deceleration ..........5-3
Braking..............................................5-3
Tips for reducing fuel
consumption..................................5-4
Engine break-in.................................5-4
Parking ..............................................5-5
PERIODIC MAINTENANCE AND
ADJUSTMENT ....................................6-1
Owner’s tool kit .................................6-2Periodic maintenance chart for the
emission control system ...............6-3
General maintenance and lubrication
chart ..............................................6-4
Removing and installing the cowling
and panel.......................................6-8
Checking the spark plug ..................6-9
Engine oil ........................................6-10
Final transmission oil ......................6-13
Coolant ...........................................6-14
Air filter and V-belt case air filter
elements ......................................6-16
Adjusting the throttle cable free
play ..............................................6-17
Valve clearance ...............................6-18
Tires ................................................6-18
Cast wheels ....................................6-20
Checking the front and rear brake
lever free play ..............................6-20
Checking the front and rear brake
pads.............................................6-21
Checking the brake fluid level ........6-22
Changing the brake fluid ................6-23
Checking and lubricating the
throttle grip and cable .................6-23
Lubricating the front and rear
brake levers .................................6-24
Checking and lubricating the
centerstand and sidestand .........6-24
Checking the front fork ...................6-25
Checking the steering.....................6-26
TABLE OF CONTENTS
EAU10410
Left view
YP125R/YP125RA
DESCRIPTION
2-1
2
1. Headlight (page 6-29)
2. Fuel tank cap (page 3-14)
3. Owner’s tool kit (page 6-2)
4. V-belt case air filter element (page 6-16)
5. Rear storage compartment (page 3-18)
6. Air filter element (page 6-16)
7. Shock absorber assembly spring preload adjusting ring (page 3-19)
8. Engine oil drain bolt (page 6-10)9. Centerstand (page 6-24)
10. Sidestand (page 3-22)
YP125RA Business Edition / YP125R Sports
DESCRIPTION
2-2
2
1. Headlight (page 6-29)
2. Fuel tank cap (page 3-14)
3. Owner’s tool kit (page 6-2)
4. V-belt case air filter element (page 6-16)
5. Rear storage compartment (page 3-18)
6. Air filter element (page 6-16)
7. Shock absorber assembly spring preload adjusting ring (page 3-19)
8. Engine oil drain bolt (page 6-10)9. Centerstand (page 6-24)
10. Sidestand (page 3-22)
Front
RearEAU16820
Tips for reducing fuel
consumption
Fuel consumption depends largely on
your riding style. Consider the follo-
wing tips to reduce fuel consumption:
Avoid high engine speeds during
acceleration.
Avoid high engine speeds with no
load on the engine.
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad cros-
sings).
EAU16830
Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1000 km
(600 mi). For this reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themsel-
ves to the correct operating clearan-
ces. During this period, prolonged
full-throttle operation or any condition
that might result in engine overhea-
ting must be avoided.
EAUS1840
0–500 km (0–300 mi)
Avoid prolonged operation above
5000 r/min.
500–1000 km (300–600 mi)
Avoid prolonged operation above
7500 r/min. NOTICE: After 1000
km (600 mi) of operation, be
sure to replace the engine oil,
final transmission oil and the
oil filter element.
[ECA12931]
OPERATION AND IMPORTANT RIDING POINTS
5-4
5
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
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