
INSTRUMENT AND CONTROL FUNCTIONS
3-22
3
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is turned on.
3. Turn the key on.
4. Keep the front or rear brake applied.
5. Push the start switch.
Does the engine start?
With the engine still off:
6. Move the sidestand up.
7. Keep the front or rear brake applied.
8. Push the start switch.
Does the engine start?
With the engine still running:
9. Move the sidestand down.
Does the engine stall?
The system is OK. The scooter can be ridden.The sidestand switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.
The sidestand switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.
YES NO YES NO NO YES
The brake switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.• The vehicle must be placed on the center-
stand during this inspection.• If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING
U2ABE2E0.book Page 22 Thursday, August 30, 2012 2:36 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-23
3
EAUM2850
Auxiliary DC jack
WARNING
EWA14360
To prevent electrical shock or short-
circuiting, make sure that the cap is
installed when the auxiliary DC jack
is not being used.NOTICE
ECA15431
The accessory connected to the
auxiliary DC jack should not be used
with the engine turned off, and the
load must never exceed 30 W (2.5 A),
otherwise the fuse may blow or the
battery may discharge.This vehicle is equipped with an auxilia-
ry DC jack in the front storage compart-
ment.
A 12-V accessory connected to the
auxiliary jack can be used when the key
is in the “ON” position and should only
be used when the engine is running.
To use the auxiliary DC jack
1. Open the front storage compart-
ment lid. (See page 3-18.)
2. Turn the key to “OFF”.3. Remove the auxiliary DC jack cap.
4. Turn the accessory off.
5. Insert the accessory plug into the
auxiliary DC jack.
6. Turn the key to “ON”, and then
start the engine. (See page 5-1.)
7. Turn the accessory on.
1. Auxiliary DC jack cap
1. Auxiliary DC jack
11
U2ABE2E0.book Page 23 Thursday, August 30, 2012 2:36 PM

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
5-5
5
EAU17213
Parking When parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10311
●
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.
●
Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.
●
Do not park near grass or other
flammable materials which
might catch fire.
U2ABE2E0.book Page 5 Thursday, August 30, 2012 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
67. Check the O-ring for damage and
replace it if necessary.
8. Install the new oil filter element and
an O-ring.
9. Install the oil filter element cover by
installing the bolts, then tightening
them to the specified torque.
TIPMake sure that the O-ring is properly
seated.
10. Install the washer and the engine
oil drain bolt, and then tighten the
drain bolt to the specified torque.TIPMake sure that the washer is properly
seated.11. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
ECA11670
●
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
●
Be sure no foreign material en-
ters the crankcase.
12. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
13. Turn the engine off, and then
check the oil level and correct it if
necessary.
14. Reset the oil change indicator.
To reset the oil change indicator
1. Turn the key to “ON”.
2. Hold the “OIL CHANGE” button
pushed for 15 to 20 seconds.
1. Oil filter element
2. O-ring
3. Oil filter element coverTightening torque:
Oil filter cover bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)1
2
3
ZAUM0712
Tightening torque:
Engine oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil change quantity:
Without oil filter element replace-
ment:
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)
U2ABE2E0.book Page 12 Thursday, August 30, 2012 2:36 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-28
6skin, eyes or clothing and al-
ways shield your eyes when
working near batteries. In case
of contact, administer the fol-
lowing FIRST AID.
EXTERNAL: Flush with plenty
of water.
INTERNAL: Drink large quan-
tities of water or milk and im-
mediately call a physician.
EYES: Flush with water for 15
minutes and seek prompt
medical attention.
●
Batteries produce explosive hy-
drogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and pro-
vide sufficient ventilation when
charging it in an enclosed
space.
●
KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
To charge the battery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that thebattery tends to discharge more quickly
if the vehicle is equipped with optional
electrical accessories.
NOTICE
ECA16521
To charge a VRLA (Valve Regulated
Lead Acid) battery, a special (con-
stant-voltage) battery charger is re-
quired. Using a conventional battery
charger will damage the battery.To store the battery
1. If the vehicle will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removing the
battery, be sure the key is
turned to “OFF”, then discon-
nect the negative lead before
disconnecting the positive lead.
[ECA16302]
2. If the battery will be stored for more
than two months, check it at least
once a month and fully charge it if
necessary.
3. Fully charge the battery before in-
stallation. NOTICE: When install-
ing the battery, be sure the keyis turned to “OFF”, then con-
nect the positive lead before
connecting the negative lead.
[ECA16840]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.NOTICE
ECA16530
Always keep the battery charged.
Storing a discharged battery can
cause permanent battery damage.
U2ABE2E0.book Page 28 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

PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
6For YP125RA
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAU34241
Replacing a headlight bulb This model is equipped with halogen
bulb headlights. If a headlight bulb
burns out, have a Yamaha dealer re-
place it and, if necessary, adjust the
headlight beam.
1. ABS motor fuse
2. ABS motor spare fuse
3. ABS solenoid fuse
4. ABS control unit fuse
1
23
3
2
4
3
Specified fuses:
Main fuse:
30.0 A
Ignition fuse:
10.0 A
Signaling system fuse:
10.0 A
Headlight fuse:
15.0 A
Hazard fuse:
10.0 A
Radiator fan fuse:
7.5 A
ABS control unit fuse:
YP125RA 5.0 A
ABS motor fuse:
YP125RA 30.0 A
Backup fuse:
5.0 A
U2ABE2E0.book Page 30 Thursday, August 30, 2012 2:36 PM