2010 YAMAHA YZF-R125 Panel

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
Controls and instruments.................2-3
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Main switch/steering lock ................3-1
Indicator and warning lights ............3-2
Tachometer ....................................3-3
Multi-function display ......................3-3
Handlebar switches ........................3-5
Clutch lever .....................................3-6
Shift pedal .......................................3-6
Brake lever .....................................3-6
Brake pedal ....................................3-7
Fuel tank cap ..................................3-7
Fuel .................................................3-8
Catalytic converters ........................3-9
Rider seat .....................................3-10
Sidestand ......................................3-10
Ignition circuit cut-off system ........3-11
FOR YOUR SAFETY –
PRE-OPERATION CHECKS..............4-1
OPERATION AND IMPORTANT
RIDING POINTS.................................5-1
Starting the engine .........................5-1Shifting ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance chart for the
emission control system ............. 6-2
General maintenance and
lubrication chart .......................... 6-3
Removing and installing the
cowlings and panel ..................... 6-7
Checking the spark plug ................. 6-9
Engine oil and oil filter element .... 6-10
Coolant ......................................... 6-13
Replacing the air filter element
and cleaning the check hose .... 6-15
Adjusting the engine idling
speed ........................................ 6-15
Adjusting the throttle cable free
play ........................................... 6-16
Valve clearance ............................ 6-17
Tires ............................................. 6-17
Cast wheels .................................. 6-19
Adjusting the clutch lever free
play ........................................... 6-20
Checking the front brake lever
free play .................................... 6-21Adjusting the brake pedal free
play ........................................... 6-21
Checking the front and rear brake
pads .......................................... 6-21
Checking the brake fluid level ...... 6-22
Changing the brake fluid .............. 6-23
Drive chain slack .......................... 6-23
Cleaning and lubricating the drive
chain ......................................... 6-25
Checking and lubricating the
cables ....................................... 6-25
Checking and lubricating the
throttle grip and cable ............... 6-26
Checking and lubricating the
brake and shift pedals .............. 6-26
Checking and lubricating the
brake and clutch levers ............ 6-27
Checking and lubricating the
sidestand .................................. 6-27
Lubricating the swingarm
pivots ........................................ 6-28
Checking the front fork ................. 6-28
Checking the steering .................. 6-29
Checking the wheel bearings ....... 6-29
Battery ......................................... 6-29
Replacing the fuses ..................... 6-31
Replacing a headlight bulb .......... 6-32
Tail/brake light ............................. 6-32
Replacing a turn signal light
bulb ........................................... 6-32U5D7E1E0.book Page 1 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
6
EAU18731
Removing and installing the
cowlings and panel The cowlings and panel shown need to
be removed to perform some of the
maintenance jobs described in this
chapter. Refer to this section each time
a cowling or panel needs to be re-
moved and installed.
EAU18790
Cowling A
To remove the cowlingRemove the screws, and then take the
cowling off.
To install the cowlingPlace the cowling in the original posi-
tion, and then install the screws.
EAUM2350
Cowling B
To remove the cowling1. Remove cowling A and panel A.2. Remove the screws, slide the
cowling forward, and then take it
off.
3. Disconnect the turn signal light
lead coupler.
To install the cowling
1. Connect the turn signal light lead
coupler.
2. Fit the projection on the cowling
into the slot, and then slide the
cowling backward.
3. Install the screws.
4. Install cowling A and panel A.
1. Cowling A
2. Cowling B
3. Cowling C
4. Cowling D
5. Panel A
1. Screw
2. Cowling A
1. Screw
2. Cowling B
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
6
EAU18852
Cowling C
To remove the cowlingRemove the screws, and then pull the
cowling off as shown.
To install the cowlingPlace the cowling in the original posi-
tion, and then install the screws.
EAUM2361
Cowling D
To remove the cowling1. Remove panel A, cowlings A, B
and C.2. Remove the screws and the quick
fasteners, and then take the cowl-
ing off.
TIPThe quick fastener is removed by push-
ing the center pin in with a screwdriver,
then pulling the fastener out.To install the cowling1. Place the cowling in the original
position, and then install the
screws and the quick fasteners.
TIPTo install the quick fasteners, push the
center pin out so that it will protrude
from the fastener head, insert the fas-
tener into the cowling, and then push
the protruding pin in until it is flush with
the fastener head.2. Install cowlings C, B, A and panel
A.
EAUM2370
Panel A
To remove the panel1. Remove the rider seat. (See page
3-10.)
2. Remove the screws, and then take
the panel off.
1. Screw
2. Cowling C
1. Quick fastener
2. Screw
3. Cowling D
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6To install the panel
1. Place the panel in the original posi-
tion, and then install the screws.
2. Install the rider seat.
EAU19632
Checking the spark plug The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove cowling A. (See page
6-7.)
2. Remove the spark plug cap.3. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.
To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.
1. Screw
2. Panel A
1. Spark plug cap
1. Spark plug wrench
U5D7E1E0.book Page 9 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-15
6
EAUM2390
Replacing the air filter element
and cleaning the check hose The air filter element should be re-
placed at the intervals specified in the
periodic maintenance and lubrication
chart. Have a Yamaha dealer replace
the air filter element more frequently if
you are riding in unusually wet or dusty
areas. In addition, the air filter check
hose must be frequently checked and
cleaned if necessary.
To clean the air filter check hose
1. Check the hose on the side of the
air filter case for accumulated dirt
or water.2. If dirt or water is visible, remove
the hose, clean it, and then install
it.
EAU33482
Adjusting the engine idling
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
1. Remove panel A. (See page 6-7.)
2. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the idle adjust-
ing screw. To increase the engine
idling speed, turn the screw in di-
rection (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
1. Air filter check hoseU5D7E1E0.book Page 15 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6
TIPIf the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.3. Install the panel.
EAU21372
Adjusting the throttle cable
free play The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, adjust it as follows.TIPThe engine idling speed must be cor-
rectly adjusted before checking and ad-
justing the throttle cable free play.1. Loosen the locknut.2. To increase the throttle cable free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
cable free play, turn the adjusting
nut in direction (b).
3. Tighten the locknut.
1. Idle adjusting screwEngine idling speed:
1300–1500 r/min
1. Throttle cable free play
1. Locknut
2. Adjusting nut
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MOTORCYCLE CARE AND STORAGE
7-1
7
EAU37833
Matte color caution NOTICE
ECA15192
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-
ished parts.
EAUM2452
Care While the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a motor-
cycle. Frequent and proper care does
not only comply with the terms of the
warranty, but it will also keep your mo-
torcycle looking good, extend its life
and optimize its performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and covers
as well as all electrical couplers
and connectors, including the
spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and de-
greaser off with water.
Cleaning
NOTICE
ECA10772


Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.


Improper cleaning can damage
plastic parts (such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc.) and
the mufflers. Use only a soft,
clean cloth or sponge with wa-
ter to clean plastic. However, if
the plastic parts cannot be thor-
oughly cleaned with water, di-
luted mild detergent with water
may be used. Be sure to rinse
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INDEXAAir filter element and check hose,
replacing and cleaning........................ 6-15
Auxiliary light bulb, replacing ................ 6-33BBattery................................................... 6-29
Brake and clutch levers, checking and
lubricating ........................................... 6-27
Brake and shift pedals, checking and
lubricating ........................................... 6-26
Brake fluid, changing ............................ 6-23
Brake fluid level, checking .................... 6-22
Brake lever .............................................. 3-6
Brake pedal ............................................. 3-7
Brake pedal free play, adjusting............ 6-21CCables, checking and lubricating .......... 6-25
Care ........................................................ 7-1
Catalytic converters ................................ 3-9
Clutch lever ............................................. 3-6
Clutch lever free play, adjusting ............ 6-20
Coolant.................................................. 6-13
Coolant temperature warning light .......... 3-2
Cowlings and panel, removing and
installing................................................ 6-7DDimmer switch ........................................ 3-5
Drive chain, cleaning and lubricating .... 6-25
Drive chain slack ................................... 6-23EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-15
Engine oil and oil filter element ............. 6-10
Engine stop switch .................................. 3-5Engine trouble warning light ................... 3-3
FFront and rear brake pads, checking .... 6-21
Front brake lever free play, checking ... 6-21
Front fork, checking .............................. 6-28
Fuel......................................................... 3-8
Fuel consumption, tips for reducing........ 5-3
Fuel tank cap .......................................... 3-7
Fuses, replacing ................................... 6-31HHandlebar switches ................................ 3-5
Headlight bulb, replacing ...................... 6-32
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-5IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-11
Indicator and warning lights .................... 3-2KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-33MMain switch/steering lock........................ 3-1
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control system... 6-2
Matte color, caution ................................ 7-1
Model label ............................................. 9-2
Multi-function display .............................. 3-3NNeutral indicator light .............................. 3-2PParking ................................................... 5-4
Part locations .......................................... 2-1Pass switch ............................................. 3-5
RRider seat .............................................. 3-10SSafety information ................................... 1-1
Shifting .................................................... 5-2
Shift pedal ............................................... 3-6
Sidestand .............................................. 3-10
Sidestand, checking and lubricating...... 6-27
Spark plug, checking ............................... 6-9
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch.............................................. 3-5
Steering, checking................................. 6-29
Storage.................................................... 7-3
Supporting the motorcycle .................... 6-33
Swingarm pivots, lubricating ................. 6-28TTachometer ............................................. 3-3
Tail/brake light ....................................... 6-32
Throttle cable free play, adjusting ......... 6-16
Throttle grip and cable, checking and
lubricating ........................................... 6-26
Tires ...................................................... 6-17
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-37
Troubleshooting charts.......................... 6-38
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-32
Turn signal switch ................................... 3-5VValve clearance..................................... 6-17
Vehicle identification number .................. 9-1
U5D7E1E0.book Page 1 Monday, July 13, 2009 11:55 AM