2010 YAMAHA YZF-R125 chain

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

FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-2
4
Rear brakeCheck operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add recommended brake fluid to specified level.
Check hydraulic system for leakage. 6-21, 6-22
ClutchCheck operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.6-20
Throttle gripMake sure that operation is smooth.
Check cable free play.
If necessary, have Yamaha dealer adjust cable free play and lubricate cable and
grip housing.6-16, 6-26
Control cablesMake sure that operation is smooth.
Lubricate if necessary.6-25
Drive chainCheck chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary.6-23, 6-25
Wheels and tiresCheck for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-17, 6-19
Brake and shift pedalsMake sure that operation is smooth.
Lubricate pedal pivoting points if necessary.6-26
Brake and clutch leversMake sure that operation is smooth.
Lubricate lever pivoting points if necessary.6-27
SidestandMake sure that operation is smooth.
Lubricate pivot if necessary.6-27 ITEM CHECKS PAGE
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
10*SwingarmCheck operation and for exces-
sive play.√√√√
Lubricate with molybdenum disul-
fide grease.Every 24000 km (14000 mi)
11 Drive chainCheck chain slack, alignment and
condition.
Adjust and lubricate chain with a
special O-ring chain lubricant
thoroughly.Every 1000 km (600 mi) and after washing the motorcycle, riding in the rain or
riding in wet areas
12*Steering bearingsCheck bearing play and steering
for roughness.√√√√√
Lubricate with lithium-soap-based
grease.Every 24000 km (14000 mi)
13*Chassis fastenersMake sure that all nuts, bolts and
screws are properly tightened.√√√√√
14Brake lever pivot
shaftLubricate with silicone grease.√√√√√
15Brake pedal pivot
shaftLubricate with lithium-soap-based
grease.√√√√√
16Clutch lever pivot
shaftLubricate with lithium-soap-based
grease.√√√√√
17Shift pedal pivot
shaftLubricate with lithium-soap-based
grease.√√√√√
18 SidestandCheck operation.
Lubricate.√√√√√
19*Sidestand switchCheck operation.√√√√√√ 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)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-23
6


Be careful that water does not en-
ter the brake fluid reservoir when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.


As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
EAUM1360
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the brake
hose replaced every four years or
whenever it is damaged or leaking.
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22773
To check the drive chain slack
1. Place the motorcycle on the side-
stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into the neu-
tral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.Drive chain slack:
30.0–40.0 mm (1.18–1.57 in)
U5D7E1E0.book Page 23 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6 4. If the drive chain slack is incorrect,
adjust it as follows.
EAU34315
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting bolt on each side
of the swingarm in direction (b),
and then push the rear wheel for-
ward. NOTICE: Improper drive
chain slack will overload the en-
gine as well as other vital parts
of the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10571]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.3. Tighten the axle nut, then the lock-
nuts to their specified torques.
1. Drive chain slack
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
Tightening torques:
Axle nut:
85 Nm (8.5 m·kgf, 61 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-25
6
EAU23025
Cleaning and lubricating the
drive chain The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10583
The drive chain must be lubricated
after washing the motorcycle, riding
in the rain or riding in wet areas.1. Clean the drive chain with kero-
sene and a small soft brush.
NOTICE: To prevent damaging
the O-rings, do not clean the
drive chain with steam cleaners,
high-pressure washers or inap-
propriate solvents.
[ECA11121]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant. NOTICE: Do not use
engine oil or any other lubri-
cants for the drive chain, as theymay contain substances that
could damage the O-rings.
[ECA11111]EAU23101
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
sheath may interfere with proper ca-
ble operation and will cause the in-
ner cable to rust. Replace a
damaged cable as soon as possible
to prevent unsafe conditions.
[EWA10721]
Recommended lubricant:
Engine oil
U5D7E1E0.book Page 25 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-30
6


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.


Take care not to spill electrolyte
on the drive chain, as this may
weaken it, shorten chain life and
possibly result in an accident.


KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
To check the electrolyte level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.TIPMake sure that the vehicle is positioned
straight up when checking the electro-
lyte level.2. Check the electrolyte level in the
battery.
TIPThe electrolyte should be between the
minimum and maximum level marks.3. If the electrolyte is at or below the
minimum level mark, add distilled
water to raise it to the maximum
level mark. NOTICE: Use only
distilled water, as tap water con-
tains minerals that are harmful
to the battery.
[ECA10611]
4. Check and, if necessary, tighten
the battery lead connections and
correct the breather hose routing.To store the battery
1. If the motorcycle 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 the specif-
ic gravity of the electrolyte at least
once a month and fully charge the
battery whenever necessary.
3. Fully charge the battery before in-
stallation.
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals and
that the breather hose is properly
routed, in good condition, and not
obstructed. NOTICE: If the
breather hose is positioned in
such a way that the frame is ex-
posed to electrolyte or gas ex-
1. Maximum level mark
2. Minimum level mark1
2
+
UPPER
LOWER
ZAUM0106
U5D7E1E0.book Page 30 Monday, July 13, 2009 11:55 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
6
EAU25080
Rear wheel
EAU25313
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.1. Loosen the axle nut.
2. Lift the rear wheel off the ground
according to the procedure on
page 6-33.
3. Remove the axle nut.4. Loosen the locknut on each side of
the swingarm.
5. Turn the drive chain slack adjust-
ing bolts fully in direction (a) and
push the wheel forward.
6. Remove the drive chain from the
rear sprocket.
TIP

If the drive chain is difficult to re-
move, remove the wheel axle first,
and then lift the wheel upward
enough to remove the drive chain
from the rear sprocket.


The drive chain cannot be disas-
sembled.
7. While supporting the brake caliper
bracket, pull the wheel axle out,
and then remove the wheel.NOTICE: Do not apply the brake
after the wheel has been re-
moved together with the brake
disc, otherwise the brake pads
will be forced shut.
[ECA11071]
EAU39412
To install the rear wheel
1. Install the wheel and the brake cal-
iper bracket by inserting the wheel
axle from the left-hand side.TIP

Make sure that the slot in the brake
caliper bracket is fit over the retain-
er on the swingarm.


Make sure that there is enough
space between the brake pads be-
fore installing the wheel.
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Brake caliper
U5D7E1E0.book Page 36 Monday, July 13, 2009 11:55 AM