Page 10 of 96

SAFETY INFORMATION
1-3
1Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing car-
bon monoxide can cause headaches,
dizziness, drowsiness, nausea, confu-
sion, 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 poison-
ing, 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 accesso-
ries 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 min-
imize imbalance or instability.
●
Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the scooter before
riding. Check accessory mounts
and cargo restraints frequently.
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 180 kg (398 lb)
YP125RA 172 kg (379 lb)
U2ABE2E0.book Page 3 Thursday, August 30, 2012 2:36 PM
Page 16 of 96
DESCRIPTION
2-3
2
EAU32230
Right viewYP125R/YP125RA1. Grab bar (page 5-2)
2. Seat (page 3-17)
3. Coolant reservoir cap (page 6-14)
4. Battery (page 6-27)
5. Fuses (page 6-29)
6. Front brake pads (page 6-21)
7. Coolant level check window (page 6-14)8. Engine oil filler cap (page 6-10)
9. Rear brake pads (page 6-21)
10.Shock absorber assembly spring preload adjusting ring (page 3-20)U2ABE2E0.book Page 3 Thursday, August 30, 2012 2:36 PM
Page 17 of 96
DESCRIPTION
2-4
2 YP125RA Business Edition / YP125R Sports
1. Grab bar (page 5-2)
2. Seat (page 3-17)
3. Coolant reservoir cap (page 6-14)
4. Battery (page 6-27)
5. Fuses (page 6-29)
6. Front brake pads (page 6-21)
7. Coolant level check window (page 6-14)
8. Engine oil filler cap (page 6-10)
9. Rear brake pads (page 6-21)10.Shock absorber assembly spring preload adjusting ring (page 3-20)
U2ABE2E0.book Page 4 Thursday, August 30, 2012 2:36 PM
Page 62 of 96

PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
65. Remove the final transmission oil
drain bolt and its gasket to drain
the oil from the final transmission
case.6. Install the final transmission oil
drain bolt and its new gasket, and
then tighten the bolt to the speci-
fied torque.
7. Refill with the specified amount of
the recommended final transmis-
sion oil. WARNING! Make sure
that no foreign material enters
the final transmission case.
Make sure that no oil gets on the
tire or wheel.
[EWA11311]
8. Install the final transmission oil fill-
er cap and its new O-ring, and then
tighten the oil filler cap.
9. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.
EAU20070
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUS1670
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIP●
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.
●
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.
2. Check the coolant level through
the check window.TIPThe coolant should be between the
minimum and maximum level marks.
1. Final transmission oil filler cap
2. O-ring
1. Final transmission oil drain boltZAUM0703
1
Tightening torque:
Final transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.21 L (0.22 US qt, 0.18 Imp.qt)
U2ABE2E0.book Page 14 Thursday, August 30, 2012 2:36 PM
Page 63 of 96

PERIODIC MAINTENANCE AND ADJUSTMENT
6-15
6 3. If the coolant is at or below the
minimum level mark, lift up the
right floorboard mat as shown.4. Open the reservoir cap, and then
add coolant to the maximum level
mark. WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is hot.
[EWA15161]
NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will
be reduced.
[ECA10472]
5. Close the reservoir cap
6. Place the floorboard mat in the
original position and push it down-
ward to secure it.
EAU33031
Changing the coolant
The coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the radiator cap when the engine is
hot.
[EWA10381]
1. Maximum level mark
2. Minimum level mark
3. Coolant level check window
1. Floorboard mat
1. Coolant reservoir cap
Coolant reservoir capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
U2ABE2E0.book Page 15 Thursday, August 30, 2012 2:36 PM