Page 7 of 96

SAFETY 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 and warning lights .............3-4
Turn signal indicator lights ...............3-4
High beam indicator light ................3-4
Engine trouble warning light ............3-4
ABS warning light
(for ABS models) ...........................3-4
Immobilizer system indicator light ....3-5
Speedometer ....................................3-5
Tachometer .......................................3-6
Multi-function display .......................3-6
Anti-theft alarm (optional) ...............3-11
Handlebar switches ........................3-11
Pass switch ....................................3-12
Dimmer switch ...............................3-12
Turn signal switch ..........................3-12
Horn switch ...................................3-12
Start switch ....................................3-12
Hazard switch ................................3-12
Front brake lever.............................3-12Rear 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
Adjusting the shock absorber
assemblies...................................3-19
Travel trunk .....................................3-20
Sidestand ........................................3-22
Ignition circuit cut-off system .........3-22
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 .................................6-2Periodic 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 ...........................................6-14
Air filter and V-belt case air filter
elements ......................................6-16
Adjusting the throttle cable free
play ..............................................6-17
Valve clearance ...............................6-18
Tires ................................................6-18
Cast wheels ....................................6-20
Checking the front and rear brake
lever free play ..............................6-20
Checking the front and rear brake
pads.............................................6-21
Checking the brake fluid level ........6-22
Changing the brake fluid ................6-23
Checking and lubricating the
throttle grip and cable .................6-23
Lubricating the front and rear
brake levers .................................6-24
Checking and lubricating the
centerstand and sidestand .........6-24
Checking the front fork ...................6-25
Checking the steering.....................6-26
TABLE OF CONTENTS
Page 14 of 96
EAU10410
Left view
YP125R/YP125RA
DESCRIPTION
2-1
2
1. Headlight (page 6-29)
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 3-19)
8. Engine oil drain bolt (page 6-10)9. Centerstand (page 6-24)
10. Sidestand (page 3-22)
Page 15 of 96
YP125RA Business Edition / YP125R Sports
DESCRIPTION
2-2
2
1. Headlight (page 6-29)
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 3-19)
8. Engine oil drain bolt (page 6-10)9. Centerstand (page 6-24)
10. Sidestand (page 3-22)
Page 16 of 96
EAU10420
Right view
YP125R/YP125RA
DESCRIPTION
2-3
2
1. Grab bar (page 5-2)
2. Seat (page 3-17)
3. Coolant reservoir cap (page 6-14)
4. Battery (page 6-26)
5. Fuses (page 6-28)
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 3-19)
Page 17 of 96
YP125RA Business Edition / YP125R Sports
DESCRIPTION
2-4
2
1. Grab bar (page 5-2)
2. Seat (page 3-17)
3. Coolant reservoir cap (page 6-14)
4. Battery (page 6-26)
5. Fuses (page 6-28)
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 3-19)
Page 26 of 96

1. Fuel reserve tripmeter
To reset a tripmeter, select it by pus-
hing the “SELECT” button until “Trip”
or “Trip F” begins flashing (“Trip” or
“Trip F” will only flash for five
seconds). While “Trip” or “Trip F” is
flashing, push the “RESET” button for
at least one second. If you do not
reset the fuel reserve tripmetermanually, it will reset itself automati-
cally and the display will return to the
prior mode after refueling and trave-
ling 5 km (3 mi).
TIP
The display cannot be changed back
to “Trip F” after pushing the “RESET”
button.
Fuel meter
With the key in the “ON” position, the
fuel meter indicates the amount of
fuel in the fuel tank. The display seg-
ments of the fuel meter disappear
towards “E” (Empty) as the fuel level
decreases. When the fuel level rea-
ches the bottom segment near “E”,
the fuel level warning indicator and
the bottom segment will flash. Refuel
as soon as possible.
Coolant temperature meter
With the key in the “ON” position, the
coolant temperature meter indicates
the temperature of the coolant. The
coolant temperature varies with chan-
ges in the weather and engine load. Ifthe top segment and coolant tempe-
rature warning indicator flash, stop
the vehicle and let the engine cool.
(See page 6-33).
ECA10021
Do not continue to operate the
engine if it is overheating.
Oil change indicator “OIL”
This indicator flashes at the initial
1000 km (600 mi), then at 6000 km
(3500 mi) and every 6000 km (3500
mi) thereafter to indicate that the
engine oil should be changed.
After changing the engine oil, reset
the oil change indicator. (See page
6-10).
NOTICE
INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
Page 27 of 96

If the engine oil is changed before the
oil change indicator comes on (i.e.
before the periodic oil change interval
has been reached), the indicator must
be reset after the oil change for the
next periodic oil change to be indica-
ted at the correct time. (See page
6-10).
The electrical circuit of the indicator
can be checked according to the
following procedure.
1. Turn the key to “ON”.
2. Check that the indicator comes
on for a few seconds and then
goes off.
3. If the indicator does not come on,
have a Yamaha dealer check the
electrical circuit.
V-belt replacement indicator “V-
BELT”
This indicator flashes every 18000 km
(10500 mi) when the V-belt needs to
be replaced.
The electrical circuit of the indicator
can be checked according to the
following procedure.
1. Turn the key to “ON”.2. Check that the indicator comes
on for a few seconds and then
goes off.
3. If the indicator does not come on,
have a Yamaha dealer check the
electrical circuit.
Self-diagnosis device
This model is equipped with a self-
diagnosis device for various electrical
circuits.
If a problem is detected in any of tho-
se circuits, the multi-function display
will indicate an error code.
If the multi-function display indicates
such an error code, note the code
number, and then have a Yamaha
dealer check the vehicle.
ECA11790
If the multi-function display indica-
tes an error code, the vehicle
should be checked as soon as pos-
sible in order to avoid engine
damage.
The self-diagnosis device also
detects problems in the immobilizer
system circuits.If a problem is detected in the immo-
bilizer system circuits, the immobilizer
system indicator light will flash and
the multi-function display will indicate
an error code when the key is turned
to “ON”.
TIP
If the multi-function display indicates
error code 52, this could be caused
by transponder interference. If this
error appears, try the following.
1. Error code display
1. Use the code re-registering key
to start the engine.
TIP
Make sure there are no other immobi-
NOTICE
INSTRUMENT AND CONTROL FUNCTIONS
3-9
3
Page 42 of 96
FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-1
4
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the ins-
pection and maintenance procedures and schedules described in the Owner’s Manual.
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment dama-
ge. Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures pro-
vided in this manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
WARNING
ITEM CHECKS PAGE
Fuel3-15
Engine oil 6-10
Final transmission oil 6-13
Coolant 6-14
Front brake 6-20, 6-21, 6-22