
OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accident
or injury.
EAU48020
TIPThis model is equipped with a lean an-
gle sensor to stop the engine in case of
a turnover. In this case, the multi-func-
tion display indicates error code 30, but
this is not a malfunction. Turn the key to
“OFF” and then to “ON” to clear the er-
ror code. Failing to do so will prevent
the engine from starting even though
the engine will crank when pushing the
start switch.
EAUS1892
Starting the engine NOTICE
ECA10250
See page 5-4 for engine break-in in-
structions prior to operating the ve-
hicle for the first time.In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up.
See page 3-21 for more information.
1. Turn the key to “ON”.
The following warning light, indica-
tor light and indicators should
come on for a few seconds, then
go off.
●
Engine trouble warning light
●
ABS warning light (for ABS
models)
●
Immobilizer system indicator
light
●
V-belt replacement indicator
●
Oil change indicator
U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM

OPERATION AND IMPORTANT RIDING POINTS
5-2
5
NOTICE
ECA15024
If a warning light, indicator light or
indicator does not go off, see pages
3-4, 3-6, 3-8, 3-9 or 3-9 for the corre-
sponding warning light, indicator
light or indicator circuit check.2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the front
or rear brake.
If the engine does not start, re-
lease the start switch, wait a few
seconds, and then try again. Each
starting attempt should be as short
as possible to preserve the bat-tery. Do not crank the engine more
than 10 seconds on any one at-
tempt.
NOTICE
ECA11042
For maximum engine life, never ac-
celerate hard when the engine is
cold!
EAU45091
Starting off 1. While pulling the rear brake lever
with your left hand and holding the
grab bar with your right hand, push
the scooter off the centerstand.
2. Sit astride the seat, and then ad-
just the rear view mirrors.
3. Switch the turn signals on.
4. Check for oncoming traffic, and
then slowly turn the throttle grip (on
the right) in order to take off.
5. Switch the turn signals off.
1. Rear brake lever
2. Front brake lever
3. Start switch
1. Grab bar
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

PERIODIC MAINTENANCE AND ADJUSTMENT
6-6
6
EAU38262
TIP●
Engine air filter and V-belt air filters
This model’s engine air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with
compressed air to avoid damaging it.
The engine air filter element needs to be replaced and the V-belt air filter elements need to be serviced more frequent-
ly when riding in unusually wet or dusty areas.
20*Cooling system Check coolant level and vehicle
for coolant leakage.√√√√√
Change coolant. Every 3 years
21Final transmission
oil Check vehicle for oil leakage.√√ √
Change.√√√
22*V- b e l t Replace. When the V-belt replacement indicator flashes [every 18000 km (10500 mi)]
23*Front and rear brake
switches Check operation.√√√√√√
24Moving parts and
cables Lubricate.√√√√√
25*Throttle grip Check operation.
Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing.√√√√√
26*Lights, signals and
switches Check operation.
Adjust headlight beam.√√√√√√ NO. 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)U2ABE2E0.book Page 6 Thursday, August 30, 2012 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
EAUS2031
Panel A
To remove the panel1. Open the seat. (See page 3-17.)
2. Remove the screws, and then pull
the panel outward.TIPFor the Business version, the rear car-
rier and travel trunk are not shown for
better understanding.
For the Sport version, the backrest is
not shown for better understanding.
To install the panel1. Place the panel in the original posi-
tion, and then install the screws.
2. Close the seat.
EAU19622
Checking the spark plug The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
Specified spark plug:
NGK/CPR9EA-9
U2ABE2E0.book Page 9 Thursday, August 30, 2012 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
TIPIf a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
EAUS1703
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart and when the service
indicator light comes on.
To check the engine oil level
1. Place the scooter on the center-
stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.TIPThe engine oil should be between the
minimum and maximum level marks.
1. Spark plug gapSpark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.04 ft·lbf)
1
ZAUM0037
U2ABE2E0.book Page 10 Thursday, August 30, 2012 2:36 PM

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

PERIODIC MAINTENANCE AND ADJUSTMENT
6-29
6
EAUS1870
Replacing the fuses The fuse box, which contains the fuses
for the individual circuits, is located be-
hind cowling A. (See page 6-8.)TIPThe main fuse, which is in a different
and hard-to-reach location, must be re-
placed by a Yamaha dealer.If a fuse for the individual circuits is
blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15131]
TIPFuse tongs and a bag containing spare
fuses are included in the owner’s tool
kit. Use the tongs to remove and install
a fuse.
For YP125R
For YP125RAFor YP125R-RA1. Fuse box
2. Hazard fuse
1. ABS fuse
2. Fuse box
3. Fuse box
4. Hazard fuse
1. Radiator fan fuse
2. ECU fuse
3. Backup fuse
4. Signaling system fuse
5. Headlight fuse
6. Ignition fuse
7. Spare fuse
8. Hazard fuse
7
1
2
3
4
5
6
.
U2ABE2E0.book Page 29 Thursday, August 30, 2012 2:36 PM