TABLE OF CONTENTSSAFETY 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............................................ 3-3
Multi-function meter unit ................ 3-5
Anti-theft alarm (optional) ............. 3-13
Handlebar switches ...................... 3-14
Front brake lever .......................... 3-15
Rear brake lever ........................... 3-15
ABS (for ABS models) .................. 3-16
Fuel tank cap ................................ 3-17
Fuel ............................................... 3-17
Catalytic converters...................... 3-19
Seat .............................................. 3-19
Storage compartments................. 3-20
Adjusting the shock absorber
assemblies ................................ 3-21
Sidestand ..................................... 3-22
Ignition circuit cut-off system ....... 3-23FOR 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 panels ...... 6-8
Checking the spark plug ............... 6-10
Engine oil....................................... 6-12
Final transmission oil..................... 6-14
Coolant.......................................... 6-15
Air filter and V-belt case air filter
elements and check hoses ........ 6-16
Checking the throttle grip free
play ............................................ 6-18
Valve clearance ............................. 6-18Tires .............................................. 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
Tail/brake light .............................. 6-31
Front turn signal light .................... 6-31
Replacing a rear turn signal light
bulb ........................................... 6-31
Replacing the license plate light
bulb ........................................... 6-32
Auxiliary light ................................ 6-33
Troubleshooting............................ 6-33
Troubleshooting charts................. 6-34U2DME1E0.book Page 1 Wednesday, October 23, 2013 1:37 PM
SAFETY INFORMATION
1-3
1Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
carbon monoxide can cause head-
aches, dizziness, drowsiness, nausea,
confusion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be
present even if you do not see or smell
any engine exhaust. Deadly levels of
carbon monoxide can collect rapidly
and you can quickly be overcome and
unable to save yourself. Also, deadly
levels of carbon monoxide can linger
for hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
soning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or acces-
sories to your scooter. Use extra care
when riding a scooter that has added
cargo or accessories. Here, along with
the information about accessories be-
low, are some general guidelines to fol-
low if loading cargo to your scooter:
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloaded vehicle
could cause an accident.When loading within this weight limit,
keep the following in mind:
Cargo and accessory weight
should be kept as low and close to
the scooter as possible. Securely
pack your heaviest items as close
to the center of the vehicle as pos-
sible and make sure to distribute
the weight as evenly as possible
on both sides of the scooter to
minimize imbalance or instability.
Shifting weights can create a sud-
den imbalance. Make sure that
accessories and cargo are se-
curely attached to the scooter be-
fore riding. Check accessory
mounts and cargo restraints fre-
quently.
• Properly adjust the suspension
for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy
items to the handlebar, front
fork, or front fender. Such items
can create unstable handling or
a slow steering response.
Maximum load:
YP125R 185 kg (408 lb)
YP125RA 181 kg (399 lb)
U2DME1E0.book Page 3 Wednesday, October 23, 2013 1:37 PM
SAFETY INFORMATION
1-5
1Aftermarket Tires and Rims
The tires and rims that came with your
scooter were designed to match the
performance capabilities and to pro-
vide the best combination of handling,
braking, and comfort. Other tires, rims,
sizes, and combinations may not be
appropriate. Refer to page 6-18 for tire
specifications and more information on
replacing your tires.
Transporting the Scooter
Be sure to observe following instruc-
tions before transporting the scooter in
another vehicle.
Remove all loose items from the
scooter.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
Secure the scooter with tie-downs
or suitable straps that are at-
tached to solid parts of the scoot-
er, such as the frame or upper
front fork triple clamp (and not, for
example, to rubber-mounted han-
dlebars or turn signals, or parts
that could break). Choose the lo-cation for the straps carefully so
the straps will not rub against
painted surfaces during transport.
The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the
scooter will not bounce exces-
sively during transport.
EAU57600
Further safe-riding pointsBe sure to signal clearly when
making turns.
Braking can be extremely difficult
on a wet road. Avoid hard braking,
because the scooter could slide.
Apply the brakes slowly when
stopping on a wet surface.
Slow down as you approach a
corner or turn. Once you have
completed a turn, accelerate
slowly.
Be careful when passing parked
cars. A driver might not see you
and open a door in your path.
Railroad crossings, streetcar rails,
iron plates on road construction
sites, and manhole covers be-
come extremely slippery when
wet. Slow down and cross them
with caution. Keep the scooter up-
right, otherwise it could slide out
from under you.
The brake pads or linings could
get wet when you wash the scoot-
er. After washing the scooter,
check the brakes before riding.
U2DME1E0.book Page 5 Wednesday, October 23, 2013 1:37 PM
FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-2
4
Rear brake• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage.6-21, 6-21, 6-22
Throttle grip• Make sure that operation is smooth.
• Check throttle grip free play.
• If necessary, have Yamaha dealer adjust throttle grip free play and lubricate ca-
ble and grip housing.6-18, 6-24
Wheels and tires•Check for damage.
• Check tire condition and tread depth.
• Check air pressure.
• Correct if necessary.6-18, 6-20
Brake levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-25
Centerstand, sidestand• Make sure that operation is smooth.
• Lubricate pivots if necessary.6-25
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.—
Instruments, lights, signals
and switches• Check operation.
• Correct if necessary.—
Sidestand switch • Check operation of ignition circuit cut-off system.
• If system is not working correctly, have Yamaha dealer check vehicle.3-22 ITEM CHECKS PAGE
U2DME1E0.book Page 2 Wednesday, October 23, 2013 1:37 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
EAU1771A
General maintenance and lubrication chartNO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
1*Air filter element•Replace.√√
2 Air filter check hose• Clean.√√√√√
3V-belt case air filter
element• Clean.√√√√√
4*Front brake• Check operation, fluid level and
vehicle for fluid leakage.√√√√√√
• Replace brake pads. Whenever worn to the limit
5*Rear brake• Check operation, fluid level and
vehicle for fluid leakage.√√√√√√
• Replace brake pads. Whenever worn to the limit
6*Brake hoses• Check for cracks or damage.
• Check for correct routing and
clamping.√√√√√
• Replace. Every 4 years
7*Brake fluid• Replace. Every 2 years
8*Wheels• Check runout and for damage.√√√√
9*Tires• Check tread depth and for dam-
age.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.√√√√√
10*Wheel bearings• Check bearing for looseness or
damage.√√√√
U2DME1E0.book Page 4 Wednesday, October 23, 2013 1:37 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6
EAU21385
Checking the throttle grip free
playThe throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha deal-
er adjust it.
EAU21402
Valve clearanceThe valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU21877
TiresTires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be
checked and, if necessary, adjusted
before each ride.
1. Throttle grip free play
ZAUM0053
U2DME1E0.book Page 18 Wednesday, October 23, 2013 1:37 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
WARNING
EWA10504
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
The tire air pressure must be
adjusted in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approved
for this model.
WARNING
EWA10512
Never overload your vehicle. Opera-
tion of an overloaded vehicle could
cause an accident.
Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail
or glass fragments in it, or if the side-
wall is cracked, have a Yamaha dealer
replace the tire immediately.TIPThe tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Front:
190 kPa (1.90 kgf/cm², 28 psi)
Rear:
220 kPa (2.20 kgf/cm², 32 psi)
YP125R 90–185 kg (198–408 lb)
YP125RA 90–181 kg (198–399 lb):
Front:
210 kPa (2.10 kgf/cm², 30 psi)
Rear:
250 kPa (2.50 kgf/cm², 36 psi)
Maximum load*:
YP125R 185 kg (408 lb)
YP125RA 181 kg (399 lb)
* Total weight of rider, passenger, car-
go and accessories
1. Tire sidewall
2. Tire tread depthMinimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
12
U2DME1E0.book Page 19 Wednesday, October 23, 2013 1:37 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6 Tire information
This model is equipped with tubeless
tires.
Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall
rubber, sometimes accompanied by
carcass deformation, is an evidence of
ageing. Old and aged tires shall be
checked by tire specialists to ascertain
their suitability for further use.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING
EWA10472
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability and
can lead to loss of control.
The replacement of all wheel
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience to do so.
Ride at moderate speeds after
changing a tire since the tire
surface must first be “broken
in” for it to develop its optimal
characteristics.
EAU21963
Cast wheelsTo maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be
checked for cracks, bends, warp-
age or other damage before each
ride. If any damage is found, have
a Yamaha dealer replace the
wheel. Do not attempt even the
smallest repair to the wheel. A de-
formed or cracked wheel must be
replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Front tire:
Size:
120/70-15 M/C 56P(METZELER)-
56S(MICHELIN)
Manufacturer/model:
METZELER / FEELFREE
MICHELIN / CITYGRIP
Rear tire:
Size:
140/70-14 M/C 68P(METZELER)-
68S(MICHELIN)
Manufacturer/model:
METZELER / FEELFREE
MICHELIN / CITYGRIP
U2DME1E0.book Page 20 Wednesday, October 23, 2013 1:37 PM