2008 YAMAHA YZF-R125 steering

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 ........................3-4
Clutch lever .....................................3-5
Shift pedal .......................................3-6
Brake lever .....................................3-6
Brake pedal ....................................3-6
Fuel tank cap ..................................3-7
Fuel .................................................3-7
Catalytic converters ........................3-8
Rider seat .......................................3-9
Anti-theft device housing ................3-9
Sidestand ......................................3-10
Ignition circuit cut-off system ........3-10
PRE-OPERATION CHECKS..............4-1
Pre-operation check list ..................4-2OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting the engine ......................... 5-1
Shifting ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR................................. 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance and
lubrication chart .......................... 6-2
Removing and installing the
cowlings and panel ..................... 6-6
Checking the spark plug ................. 6-8
Engine oil and oil filter element ...... 6-9
Coolant ......................................... 6-12
Replacing the air filter element
and cleaning the check hose .... 6-14
Adjusting the engine idling
speed ........................................ 6-14
Adjusting the throttle cable free
play ........................................... 6-15
Valve clearance ............................ 6-16
Tires ............................................. 6-16
Cast wheels .................................. 6-18
Adjusting the clutch lever free
play ........................................... 6-19Checking the front brake lever
free play .................................... 6-20
Adjusting the brake pedal free
play ........................................... 6-20
Checking the front and rear
brake pads ................................ 6-20
Checking the brake fluid level ...... 6-21
Changing the brake fluid .............. 6-22
Drive chain slack .......................... 6-22
Cleaning and lubricating the
drive chain ................................ 6-24
Checking and lubricating the
cables ....................................... 6-24
Checking and lubricating the
throttle grip and cable ............... 6-25
Checking and lubricating the
brake and shift pedals .............. 6-25
Checking and lubricating the
brake and clutch levers ............ 6-26
Checking and lubricating the
sidestand .................................. 6-26
Lubricating the swingarm
pivots ........................................ 6-27
Checking the front fork ................. 6-27
Checking the steering .................. 6-28
Checking the wheel bearings ....... 6-28
Battery ......................................... 6-29
Replacing the fuses ..................... 6-30
Replacing a headlight bulb .......... 6-31
Tail/brake light ............................. 6-31U5D7E0E0.book Page 1 Tuesday, December 18, 2007 10:13 AM

SAFETY INFORMATION
1-3
1Loading
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
When loading within this weight limit,
keep the following in mind:

Cargo and accessory weight
should be kept as low and close to
the motorcycle as possible. Make
sure to distribute the weight as
evenly as possible on both sides of
the motorcycle to minimize imbal-
ance or instability.


Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the motorcycle before
riding. Check accessory mounts
and cargo restraints frequently.


Never attach any large or heavy
items to the handlebar, front fork,
or front fender. These items, in-
cluding such cargo as sleepingbags, duffel bags, or tents, can
create unstable handling or a slow
steering response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this motorcycle. Since Yamaha cannot
test all other accessories that may be
available, you must personally be re-
sponsible for the proper selection, in-
stallation and use of non-Yamaha
accessories. Use extreme caution
when selecting and installing any ac-
cessories.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.

Never install accessories or carry
cargo that would impair the perfor-
mance of your motorcycle. Care-
fully inspect the accessory before
using it to make sure that it does
not in any way reduce ground
clearance or cornering clearance,limit suspension travel, steering
travel or control operation, or ob-
scure lights or reflectors.
Accessories fitted to the handle-
bar or the front fork area can
create instability due to improper
weight distribution or aerody-
namic changes. If accessories
are added to the handlebar or
front fork area, they must be as
lightweight as possible and
should be kept to a minimum.
Bulky or large accessories may
seriously affect the stability of
the motorcycle due to aerody-
namic effects. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become un-
stable in cross winds. These ac-
cessories may also cause
instability when passing or being
passed by large vehicles.
Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
Maximum load:
185 kg (408 lb)
U5D7E0E0.book Page 3 Tuesday, December 18, 2007 10:13 AM

DESCRIPTION
2-3
2
EAU10430
Controls and instruments1. Clutch lever (page 3-5)
2. Left handlebar switches (page 3-4)
3. Multi-function display (page 3-3)
4. Main switch/steering lock (page 3-1)
5. Tachometer (page 3-3)
6. Right handlebar switches (page 3-4)
7. Throttle grip (page 6-15)
8. Brake lever (page 3-6)U5D7E0E0.book Page 3 Tuesday, December 18, 2007 10:13 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-1
3
EAU10460
Main switch/steering lock The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
EAU36870
ON
All electrical circuits are supplied with
power, the meter lighting, taillight, li-
cense plate light and auxiliary lights
come on, and the engine can be start-
ed. The key cannot be removed.NOTE:The headlight comes on automatically
when the engine is started and stays on
until the key is turned to “OFF”, even ifthe engine stalls.
EAU10660
OFF
All electrical systems are off. The key
can be removed.
EAU10690
LOCK
The steering is locked, and all electrical
systems are off. The key can be re-
moved.
To lock the steering1. Turn the handlebars all the way to
the left or right.
2. Push the key in from the “OFF” po-
sition, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.To unlock the steering
Push the key into the main switch, and
then turn it to “OFF” while still pushing
it.
WARNING
EWA10060
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
sure that the vehicle is stopped be-
fore turning the key to “OFF” or“LOCK”.
1. Push.
2. Turn.
1. Push.
2. Turn.
U5D7E0E0.book Page 1 Tuesday, December 18, 2007 10:13 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-4
6
15*Steering bearingsCheck bearing play and steering
for roughness.√√√√√
Lubricate with lithium-soap-based
grease.Every 24000 km (14000 mi)
16*Chassis fastenersMake sure that all nuts, bolts and
screws are properly tightened.√√√√√
17 SidestandCheck operation.
Lubricate.√√√√√
18*Sidestand switchCheck operation.√√√√√√
19*Front forkCheck operation and for oil leak-
age.√√√√
20*Shock absorber as-
semblyCheck operation and shock ab-
sorber for oil leakage.√√√√
21*Rear suspension re-
lay arm and con-
necting arm
pivoting pointsCheck operation.√√√√
Lubricate with lithium-soap-based
grease.√√
22*Fuel injectionAdjust engine idling speed.√√√√√√
23 Engine oilChange. (See page 3-2.)√2000 km (1200 mi) after the initial 1000 km (600 mi) and every
3000 km (1800 mi) thereafter
Check oil level and vehicle for oil
leakage.Every 3000 km (1800 mi)√
24Engine oil filter ele-
mentReplace.√√√√√ 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)U5D7E0E0.book Page 4 Tuesday, December 18, 2007 10:13 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6
EAU23280
Checking the steering Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground.
WARNING
EWA10750
Securely support the vehicle so thatthere is no danger of it falling over.
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
EAU23290
Checking the wheel bearings The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.
U5D7E0E0.book Page 28 Tuesday, December 18, 2007 10:13 AM

CONSUMER INFORMATION
9-1
9
EAU26351
Identification numbers Record the key identification number,
vehicle identification number and mod-
el label information in the spaces pro-
vided below for assistance when
ordering spare parts from a Yamaha
dealer or for reference in case the vehi-
cle is stolen.
KEY IDENTIFICATION NUMBER:
VEHICLE IDENTIFICATION
NUMBER:
MODEL LABEL INFORMATION:
EAU26381
Key identification number
The key identification number is
stamped into the key tag. Record this
number in the space provided and use
it for reference when ordering a new
key.
EAU26400
Vehicle identification number
The vehicle identification number is
stamped into the steering head pipe.
Record this number in the space pro-
vided.NOTE:
The vehicle identification number is
used to identify your motorcycle and
may be used to register your motor-
cycle with the licensing authority in yourarea.
1. Key identification number
1. Vehicle identification number
U5D7E0E0.book Page 1 Tuesday, December 18, 2007 10:13 AM

INDEXAAir filter element and check hose,
replacing and cleaning........................ 6-14
Anti-theft device housing......................... 3-9
Auxiliary light bulb, replacing ................ 6-32BBattery................................................... 6-29
Brake and clutch levers, checking and
lubricating ........................................... 6-26
Brake and shift pedals, checking and
lubricating ........................................... 6-25
Brake fluid, changing ............................ 6-22
Brake fluid level, checking .................... 6-21
Brake lever .............................................. 3-6
Brake pedal ............................................. 3-6
Brake pedal free play, adjusting............ 6-20CCables, checking and lubricating .......... 6-24
Care ........................................................ 7-1
Catalytic converters ................................ 3-8
Clutch lever ............................................. 3-5
Clutch lever free play, adjusting ............ 6-19
Coolant.................................................. 6-12
Coolant temperature warning light .......... 3-2
Cowlings and panel, removing and
installing................................................ 6-6DDimmer switch ........................................ 3-5
Drive chain, cleaning and lubricating .... 6-24
Drive chain slack ................................... 6-22EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-14
Engine oil and oil filter element ............... 6-9Engine stop switch.................................. 3-5
Engine trouble warning light ................... 3-2
FFront and rear brake pads, checking .... 6-20
Front brake lever free play, checking ... 6-20
Front fork, checking .............................. 6-27
Fuel......................................................... 3-7
Fuel consumption, tips for reducing........ 5-3
Fuel tank cap .......................................... 3-7
Fuses, replacing ................................... 6-30HHandlebar switches ................................ 3-4
Headlight bulb, replacing ...................... 6-31
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-5IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-10
Indicator and warning lights .................... 3-2KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-32MMain switch/steering lock........................ 3-1
Matte color, caution ................................ 7-1
Model label ............................................. 9-2
Multi-function display .............................. 3-3NNeutral indicator light .............................. 3-2PParking ................................................... 5-4
Part locations .......................................... 2-1
Pass switch............................................. 3-5Periodic maintenance and lubrication
chart ...................................................... 6-2
Pre-operation check list........................... 4-2
RRider seat ................................................ 3-9SSafety information ................................... 1-1
Shifting .................................................... 5-2
Shift pedal ............................................... 3-6
Sidestand .............................................. 3-10
Sidestand, checking and lubricating...... 6-26
Spark plug, checking ............................... 6-8
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch.............................................. 3-5
Steering, checking................................. 6-28
Storage.................................................... 7-3
Supporting the motorcycle .................... 6-32
Swingarm pivots, lubricating ................. 6-27TTachometer ............................................. 3-3
Tail/brake light ....................................... 6-31
Throttle cable free play, adjusting ......... 6-15
Throttle grip and cable, checking and
lubricating ........................................... 6-25
Tires ...................................................... 6-16
Tool kit..................................................... 6-1
Troubleshooting .................................... 6-36
Troubleshooting charts.......................... 6-37
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-31
Turn signal switch ................................... 3-5VValve clearance..................................... 6-16
U5D7E0E0.book Page 1 Tuesday, December 18, 2007 10:13 AM