check engine YAMAHA YZF-R6 2005 Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6
EAU34300
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.NOTE:
The engine is warm when it quickly re-sponds to the throttle.
Check the engine idling speed and, if
necessary, adjust it to specification by
turning the idle adjusting screw. To in-
crease the engine idling speed, turn the
screw in direction (a). To decrease the
engine idling speed, turn the screw in
direction (b).
NOTE:
If the specified idling speed cannot be
obtained as described above, have aYamaha dealer make the adjustment.
EAU21381
Checking the throttle cable
free play The throttle cable free play should mea-
sure 6.0–8.0 mm (0.24–0.31 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
1. Idle adjusting screw
Engine idling speed:
1250–1350 r/min
1. Throttle cable free play
U5SLE2E0.book Page 18 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU21771
Tires To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10500


The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).


The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approvedfor this model.
WARNING
EWA11020
Because loading has an enormous
impact on the handling, braking,
performance and safety characteris-
tics of your motorcycle, you should
keep the following precautions in
mind.Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Front:
250 kPa (36 psi) (2.50 kgf/cm²)
Rear:
290 kPa (42 psi) (2.90 kgf/cm²)
90–192 kg (198–423 lb):
Front:
250 kPa (36 psi) (2.50 kgf/cm²)
Rear:
290 kPa (42 psi) (2.90 kgf/cm²)
High-speed riding:
Front:
250 kPa (36 psi) (2.50 kgf/cm²)
Rear:
290 kPa (42 psi) (2.90 kgf/cm²)
Maximum load*:
192 kg (423 lb)
* Total weight of rider, passenger, car-
go and accessories
U5SLE2E0.book Page 19 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU23021
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.CAUTION:
ECA10581
The drive chain must be lubricated
after washing the motorcycle andriding in the rain.
1. Clean the drive chain with kero-
sene and a small soft brush.CAUTION:
ECA11120
To prevent damaging the O-rings, do
not clean the drive chain with steam
cleaners, high-pressure washers orinappropriate solvents.
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant.
CAUTION:
ECA11110
Do not use engine oil or any other lu-
bricants for the drive chain, as they
may contain substances that coulddamage the O-rings.
EAU23100
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
EWA10720
Damage to the outer sheath may in-
terfere with proper cable operation
and will cause the inner cable to
rust. Replace a damaged cable as
soon as possible to prevent unsafeconditions.Recommended lubricant:
Engine oil
U5SLE2E0.book Page 27 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-31
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.
U5SLE2E0.book Page 31 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6
EAU24342
Replacing an auxiliary light
bulb This model is equipped with two auxil-
iary lights. If an auxiliary light bulb burns
out, replace it as follows.
1. Remove the auxiliary light bulb
cover by removing the quick fas-
tener.NOTE:
Remove the quick fastener by pushing
the center pin in with a screwdriver,then pulling the fastener out.
2. Remove the socket (together with
the bulb) by pulling it out.3. Remove the defective bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the auxiliary light bulb cover
by installing the quick fastener.
EAU24350
Supporting the motorcycle Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand up-
right. Check that the motorcycle is in a
stable and level position before starting
any maintenance. A strong wooden
box can be placed under the engine for
added stability.
To service the front wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
1. Auxiliary light bulb cover
2. Quick fastener
1. Auxiliary light bulb
2. Auxiliary light bulb socket
U5SLE2E0.book Page 37 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6
EAU25911
Troubleshooting charts Starting problems or poor engine performance
WARNING
EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
U5SLE2E0.book Page 43 Friday, August 6, 2004 9:48 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
6 Engine overheating
WARNING
EWA10400


Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.


After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U5SLE2E0.book Page 44 Friday, August 6, 2004 9:48 AM

INDEX
AAir filter element, checking ................... 6-16
Air intake duct ....................................... 6-17
Anti-theft alarm (optional) ..................... 3-12
Auxiliary light bulb, replacing ................ 6-37BBattery .................................................. 6-32
Brake and clutch levers,
checking and lubricating ..................... 6-29
Brake and shift pedals,
checking and lubricating ..................... 6-28
Brake fluid, changing ............................ 6-25
Brake fluid level, checking .................... 6-24
Brake lever ........................................... 3-14
Brake pedal .......................................... 3-15CCables, checking and lubricating .......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-17
Clutch lever........................................... 3-14
Clutch lever free play, adjusting ........... 6-22
Coolant ................................................. 6-12
Coolant temperature warning light.......... 3-5
Cowlings and panels,
removing and installing......................... 6-6DDimmer switch ...................................... 3-13
Drive chain, lubricating ......................... 6-27
Drive chain slack .................................. 6-25EEngine break-in ...................................... 5-3
Engine idling speed .............................. 6-18
Engine oil and oil filter cartridge ............. 6-9
Engine stop switch................................ 3-13Engine trouble warning light .................... 3-7
FFront and rear brake pads, checking .... 6-23
Front fork, adjusting .............................. 3-20
Front fork, checking...............................6-30
Fuel ....................................................... 3-16
Fuel consumption, tips for reducing ........ 5-3
Fuel level warning light............................ 3-4
Fuel tank breather/overflow hose .......... 3-17
Fuel tank cap......................................... 3-15
Fuses, replacing .................................... 6-33HHandlebar switches ............................... 3-12
Hazard switch........................................ 3-13
Headlight bulb, replacing....................... 6-34
Helmet holders ...................................... 3-19
High beam indicator light......................... 3-4
Horn switch ........................................... 3-13IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-25
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-7
Indicator and warning lights .................... 3-3KKey identification number ........................ 9-1LLicense plate light bulb, replacing ......... 6-36
Luggage strap holders .......................... 3-24MMain switch/steering lock ........................ 3-2
Model label .............................................. 9-2
Multi-function display...............................3-8
NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PParking.................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-13
Periodic maintenance and
lubrication chart .................................... 6-2
Pre-operation check list .......................... 4-2RRear brake light switch, adjusting ......... 6-23SSafety information ................................... 1-1
Seats..................................................... 3-18
Shifting .................................................... 5-2
Shift pedal ............................................. 3-14
Shift timing indicator light ........................ 3-7
Shock absorber assembly, adjusting .... 3-22
Sidestand .............................................. 3-24
Sidestand, checking and lubricating ..... 6-29
Spark plugs, checking............................. 6-8
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Start switch ........................................... 3-13
Steering, checking ................................ 6-31
Storage ................................................... 7-3
Storage compartment ........................... 3-19
Supporting the motorcycle .................... 6-37
Swingarm pivots, lubricating ................. 6-30TTachometer............................................. 3-8
Tail/brake light ...................................... 6-35
U5SLE2E0.book Page 1 Friday, August 6, 2004 9:48 AM