Table of contents
Safety information............................1-1
Further safe-riding points ................1-5
Description........................................2-1
Left view ..........................................2-1
Right view........................................2-2
Controls and instruments ................2-3
Instrument and control functions....3-1
Immobilizer system .........................3-1
Main switch/steering lock ...............3-2
Indicator lights and warning
lights ............................................3-4
Multi-function meter unit .................3-6
Handlebar switches.......................3-14
Front brake lever ...........................3-15
Rear brake lever ............................3-16
ABS (for ABS models) ...................3-16
Fuel tank cap.................................3-17
Fuel................................................3-18
Catalytic converters .....................3-19
Seat ...............................................3-20
Storage compartments .................3-21
Adjusting the shock absorber
assemblies .................................3-22
Sidestand ......................................3-23
Ignition circuit cut-off system........3-24
For your safety – pre-operation
checks...............................................4-1
Operation and important riding
points.................................................5-1
Starting the engine ..........................5-2
Starting off.......................................5-3
Acceleration and deceleration.........5-3
Braking ............................................5-4
Tips for reducing fuel
consumption ................................5-5
Engine break-in ...............................5-5
Parking ............................................5-6
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 panels ...... 6-7
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 and check hoses........ 6-15
Checking the throttle grip free
play ............................................ 6-17
Valve clearance ............................. 6-17
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
cables ........................................ 6-24
Checking and lubricating the
throttle grip and cable ............... 6-24
Lubricating the front and rear
brake levers ............................... 6-25
Checking and lubricating the
centerstand and sidestand ........ 6-25
Checking the front fork ................. 6-26
Checking the steering ................... 6-26
Checking the wheel bearings ....... 6-27
Battery .......................................... 6-27
Replacing the fuses ...................... 6-29
Replacing a headlight bulb ........... 6-31
Auxiliary lights ............................... 6-31
Tail/brake light .............................. 6-32
Front turn signal light .................... 6-32
Replacing a rear turn signal light
bulb............................................ 6-33
Replacing the license plate light
bulb............................................ 6-34
Troubleshooting ............................ 6-34
Troubleshooting charts ................. 6-35
U2DME2E0.book Page 1 Tuesday, June 30, 2015 11:38 AM
Operation and important riding points
5-5
5
EAU16821
Tips for reducing fuel con-
sumption
Fuel consumption depends largely on
your riding style. Consider the follow-
ing 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 traf-
fic lights or at railroad crossings).
EAU16831
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 fol-
lowing 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 themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAUS1841
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.
[ECA12932]
1000 km (600 mi) and beyond
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
Keep the engine speed out of
the tachometer red zone.
If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the vehi-
cle.
U2DME2E0.book Page 5 Tuesday, June 30, 2015 11:38 AM
Specifications
8-1
8
Dimensions:
Overall length:
2160 mm (85.0 in)
Overall width:
790 mm (31.1 in)
Overall height:
1385 mm (54.5 in)
Seat height:
785 mm (30.9 in)
Wheelbase:
1525 mm (60.0 in)
Ground clearance:
125 mm (4.92 in)
Minimum turning radius:
2500 mm (98.4 in)
Weight:
Curb weight:
169 kg (373 lb) (YP125R)
173 kg (381 lb) (YP125RA)
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:
11.2 : 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-50Recommended 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)
Coolant quantity:
Coolant reservoir (up to the maximum level
mark):
0.32 L (0.34 US qt, 0.28 Imp.qt)
Radiator (including all routes):
1.10 L (1.16 US qt, 0.97 Imp.qt)
Air filter:
Air filter element:
Oil-coated paper element
Fuel:
Recommended fuel:
Premium unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity:
13.2 L (3.48 US gal, 2.90 Imp.gal)
Fuel reserve amount:
2.5 L (0.66 US gal, 0.55 Imp.gal)
Fuel injection:
Throttle body:
ID mark:
1B91 00
Spark plug(s):
Manufacturer/model:
NGK/CPR9EA-9
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40
SAE 20W-40
SAE 20W-50
SAE 10W-40
SAE 10W-50
U2DME2E0.book Page 1 Tuesday, June 30, 2015 11:38 AM
10-1
10
Index
A
ABS (for ABS models) .......................... 3-16
ABS warning light (for ABS models)....... 3-4
Acceleration and deceleration................ 5-3
Air filter and V-belt case air filter
elements ............................................ 6-15
Auxiliary lights ...................................... 6-31
B
Battery .................................................. 6-27
Brake fluid, changing ........................... 6-23
Brake fluid level, checking ................... 6-22
Brake lever, front .................................. 3-15
Brake lever, rear ................................... 3-16
Brake levers, lubricating ....................... 6-25
Braking ................................................... 5-4
C
Cables, checking and lubricating ......... 6-24
Care ........................................................ 7-1
Catalytic converters ............................. 3-19
Centerstand and sidestand, checking
and lubricating ................................... 6-25
Coolant ................................................. 6-14
D
Dimmer switch ..................................... 3-14
E
Engine break-in ...................................... 5-5
Engine oil .............................................. 6-10
Engine trouble warning light................... 3-4
F
Final transmission oil ............................ 6-13
Front and rear brake lever free play,
checking............................................. 6-20
Front and rear brake pads, checking ... 6-21
Front fork, checking ............................. 6-26
Front turn signal light ........................... 6-32
Fuel....................................................... 3-18
Fuel consumption, tips for reducing ...... 5-5
Fuel level warning light ........................... 3-4
Fuel tank cap........................................ 3-17
Fuses, replacing ................................... 6-29
H
Handlebar switches.............................. 3-14
Hazard switch ...................................... 3-14
Headlight bulb, replacing ..................... 6-31
High beam indicator light ....................... 3-4
Horn switch .......................................... 3-14
I
Identification numbers............................ 9-1
Ignition circuit cut-off system............... 3-24
Immobilizer system ................................ 3-1Immobilizer system indicator light .......... 3-5
Indicator lights and warning lights .......... 3-4
Info switch ............................................ 3-15
L
License plate light bulb, replacing ........ 6-34
M
Main 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 meter unit ........................ 3-6
P
Panels, removing and installing .............. 6-7
Parking .................................................... 5-6
Part locations .......................................... 2-1
Pass switch........................................... 3-14
S
Safe-riding points ................................... 1-5
Safety information................................... 1-1
Seat....................................................... 3-20
Shock absorber assemblies,
adjusting ............................................. 3-22
Sidestand .............................................. 3-23
Spark plug, checking .............................. 6-9
Specifications ......................................... 8-1
Starting off .............................................. 5-3
Starting the engine.................................. 5-2
Start switch ........................................... 3-14
Steering, checking ................................ 6-26
Storage ................................................... 7-4
Storage compartments ......................... 3-21
T
Tail/brake light ...................................... 6-32
Throttle grip and cable, checking and
lubricating ........................................... 6-24
Throttle grip free play, checking ........... 6-17
Tires ...................................................... 6-18
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-34
Troubleshooting charts ......................... 6-35
Turn signal indicator lights ...................... 3-4
Turn signal light bulb (rear), replacing... 6-33
Turn signal switch ................................. 3-14
V
Valve clearance..................................... 6-17
Vehicle identification number ................. 9-1
W
Wheel bearings, checking..................... 6-27
U2DME2E0.book Page 1 Tuesday, June 30, 2015 11:38 AM