TABLE OF CONTENTSSAFETY 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 lights and
warning lights ..............................3-4
Speedometer ..................................3-5
Tachometer ....................................3-6
Multi-function display ......................3-6
Anti-theft alarm (optional) .............3-11
Handlebar switches ......................3-11
Front brake lever ..........................3-12
Rear 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
Travel trunk ..................................3-19
Adjusting the shock absorber
assemblies ................................3-20Sidestand ..................................... 3-21
Ignition circuit cut-off system ........ 3-21
Auxiliary DC jack .......................... 3-23
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 ............................... 6-2
Periodic 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 ......................................... 6-14Air filter and V-belt case air filter
elements ................................... 6-16
Adjusting the throttle grip free
play ........................................... 6-17
Valve clearance ........................... 6-18
Tires ............................................. 6-18
Cast wheels ................................. 6-20
Checking the front and
rear brake lever free play ......... 6-21
Checking the front and
rear brake pads ........................ 6-21
Checking the brake fluid level ...... 6-22
Changing the brake fluid .............. 6-24
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 .................. 6-27
Checking the wheel bearings ....... 6-27
Battery ......................................... 6-27
Replacing the fuses ..................... 6-29
Replacing a headlight bulb .......... 6-30
Replacing a front turn signal light
bulb ........................................... 6-31
Replacing a tail/brake light bulb or
a rear turn signal light bulb ....... 6-31U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
DESCRIPTION
2-1
2
EAU32220
Left viewYP125R/YP125RA1. Headlight (page 6-30)
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 3-20)8. Engine oil drain bolt (page 6-10)
9. Centerstand (page 6-25)
10.Sidestand (page 3-21)U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
DESCRIPTION
2-2
2 YP125RA Business Edition / YP125R Sports
1. Headlight (page 6-30)
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 3-20)
8. Engine oil drain bolt (page 6-10)
9. Centerstand (page 6-25)10.Sidestand (page 3-21)
U2ABE2E0.book Page 2 Thursday, August 30, 2012 2:36 PM
OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU16820
Tips for reducing fuel con-
sumption Fuel consumption depends largely on
your riding style. Consider the following
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 crossings).
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 follow-
ing 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.
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]
1000 km (600 mi) and beyond
The vehicle can now be operated nor-
mally.NOTICE
ECA10310
●
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.
U2ABE2E0.book Page 4 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
INDEX
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 DC jack .................................. 3-23
Auxiliary light bulb, replacing ................ 6-33BBattery .................................................. 6-27
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-22
Brake lever, front .................................. 3-12
Brake lever, rear ................................... 3-13
Brake levers, lubricating ....................... 6-25
Braking ................................................... 5-3CCables, checking and lubricating .......... 6-24
Care ........................................................ 7-1
Catalytic converters .............................. 3-16
Centerstand and sidestand,
checking and lubricating ..................... 6-25
Coolant ................................................. 6-14
Cowling and panel,
removing and installing......................... 6-8DDimmer switch ...................................... 3-12EEngine break-in ...................................... 5-4
Engine oil .............................................. 6-10
Engine trouble warning light ................... 3-4FFinal transmission oil ............................ 6-13Front and rear brake lever free play,
checking .............................................. 6-21
Front and rear brake pads, checking .... 6-21
Front fork, checking...............................6-26
Fuel ....................................................... 3-15
Fuel consumption, tips for reducing ........ 5-4
Fuel tank cap......................................... 3-14
Fuses, replacing .................................... 6-29
HHandlebar switches ............................... 3-11
Hazard switch........................................ 3-12
Headlight bulb, replacing....................... 6-30
High beam indicator light......................... 3-4
Horn switch ........................................... 3-12IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-21
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-5
Indicator lights and warning lights ........... 3-4LLicense plate light .................................6-33MMain 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...............................3-6PParking ....................................................5-5
Part locations .......................................... 2-1
Pass switch ........................................... 3-12
SSafe-riding points .................................... 1-5
Safety information ................................... 1-1
Seat ...................................................... 3-17
Securing bracket ................................... 3-17
Shock absorber assemblies,
adjusting ............................................. 3-20
Sidestand .............................................. 3-21
Spark plug, checking .............................. 6-9
Specifications.......................................... 8-1
Speedometer .......................................... 3-5
Starting off .............................................. 5-2
Starting the engine.................................. 5-1
Start switch ........................................... 3-12
Steering, checking ................................ 6-27
Storage ................................................... 7-3
Storage compartments ......................... 3-18TTachometer............................................. 3-6
Tail/brake light bulb or
rear turn signal light bulb, replacing.... 6-31
Throttle grip and cable,
checking and lubricating ..................... 6-24
Throttle grip free play, adjusting ........... 6-17
Tires ...................................................... 6-18
Tool kit .................................................... 6-2
Travel trunk ........................................... 3-19
Troubleshooting .................................... 6-33
Troubleshooting charts ......................... 6-35
Turn signal indicator lights ...................... 3-4
Turn signal light bulb (front),
replacing ............................................. 6-31
Turn signal switch ................................. 3-12
U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM