2006 YAMAHA YZF-R6 spark plugs

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
Immobilizer system .........................3-1
Main switch/steering lock ................3-2
Indicator and warning lights ............3-3
Multi-function meter unit .................3-7
Anti-theft alarm (optional) .............3-13
Handlebar switches ......................3-13
Clutch lever ...................................3-15
Shift pedal .....................................3-15
Brake lever ...................................3-15
Brake pedal ..................................3-16
Fuel tank cap ................................3-16
Fuel ...............................................3-17
Fuel tank breather/overflow
hose ..........................................3-18
Catalytic converter ........................3-18
Seats ............................................3-19
Helmet holding cable ....................3-20
Adjusting the front fork ..................3-21
Adjusting the shock absorber
assembly ...................................3-23
Luggage strap holders ..................3-25
EXUP system ...............................3-26Sidestand ..................................... 3-26
Ignition circuit cut-off system ........ 3-27
PRE-OPERATION CHECKS............. 4-1
Pre-operation check list .................. 4-2
OPERATION 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 cowlings
and panels .................................. 6-6
Checking the spark plugs ............. 6-10
Engine oil and oil filter cartridge ... 6-11
Coolant ......................................... 6-14
Air filter element ............................ 6-17
Checking the throttle cable
free play .................................... 6-18
Valve clearance ............................ 6-18
Tires ............................................. 6-18
Cast wheels .................................. 6-21Adjusting the clutch lever
free play .................................... 6-21
Adjusting the rear brake light
switch ....................................... 6-22
Checking the front and rear
brake pads ................................ 6-22
Checking the brake fluid level ...... 6-23
Changing the brake fluid .............. 6-24
Drive chain slack .......................... 6-24
Cleaning and lubricating the
drive chain ................................ 6-26
Checking and lubricating the
cables ....................................... 6-26
Checking and lubricating the
throttle grip and cable ............... 6-27
Checking and lubricating the
brake and shift pedals .............. 6-27
Checking and lubricating the
brake and clutch levers ............ 6-28
Checking and lubricating the
sidestand .................................. 6-28
Lubricating the swingarm
pivots ........................................ 6-29
Checking the front fork ................. 6-29
Checking the steering .................. 6-30
Checking the wheel bearings ....... 6-30
Battery ......................................... 6-31
Replacing the fuses ..................... 6-32
Replacing a headlight bulb .......... 6-33
Tail/brake light ............................. 6-35U2C0E0E0.book Page 1 Friday, September 16, 2005 8:59 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU17705
Periodic maintenance and lubrication chart NOTE:

The annual checks must be performed every year, except if a kilometer-based maintenance is performed in-
stead.


From 50000 km, repeat the maintenance intervals starting from 10000 km.


Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technicalskills.
NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1000 km)
ANNUAL
CHECK
1 10203040
1*Fuel lineCheck fuel hoses for cracks or damage.√√√√ √
2*Spark plugsCheck condition.
Clean and regap.√√
Replace.√√
3*ValvesCheck valve clearance.
Adjust.Every 40000 km
4*Air filter elementReplace.√
5ClutchCheck operation.
Adjust.√√√√√
6*Front brakeCheck operation, fluid level and vehicle for fluid leakage.√√√√√ √
Replace brake pads. Whenever worn to the limit
7*Rear brakeCheck operation, fluid level and vehicle for fluid leakage.√√√√√ √
Replace brake pads. Whenever worn to the limit
8*Brake hosesCheck for cracks or damage.√√√√ √
Replace. Every 4 years
9*WheelsCheck runout and for damage.√√√√
U2C0E0E0.book Page 2 Friday, September 16, 2005 8:59 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6
EAU19651
Checking the spark plugs The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be defective. Do
not attempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
NOTE:If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-fied torque as soon as possible.CAUTION:
ECA10840
Do not use any tools to remove or in-
stall the spark plug cap, otherwise
the ignition coil coupler may get
damaged. The spark plug cap may
be difficult to remove because the
rubber seal on the end of the cap fits
tightly. To remove the spark plug
cap, simply twist it back and forth
while pulling it out; to install it, twistit back and forth while pushing it in.
Specified spark plug:
NGK/CR10EK
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
U2C0E0E0.book Page 10 Friday, September 16, 2005 8:59 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-42
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.
U2C0E0E0.book Page 42 Friday, September 16, 2005 8:59 AM

MOTORCYCLE CARE AND STORAGE
7-4
73. Perform the following steps to pro-
tect the cylinders, piston rings, etc.
from corrosion.
a. Remove the spark plug caps
and spark plugs.
b. Pour a teaspoonful of engine oil
into each spark plug bore.
c. Install the spark plug caps onto
the spark plugs, and then place
the spark plugs on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder walls with oil.)
e. Remove the spark plug caps
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
WARNING
EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turningthe engine over.4. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-31.
NOTE:Make any necessary repairs beforestoring the motorcycle.
U2C0E0E0.book Page 4 Friday, September 16, 2005 8:59 AM

INDEXAAnti-theft alarm (optional)...................... 3-13
Auxiliary light bulb ................................. 6-36BBattery................................................... 6-31
Brake and clutch levers,
checking and lubricating ..................... 6-28
Brake and shift pedals,
checking and lubricating ..................... 6-27
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever ............................................ 3-15
Brake pedal ........................................... 3-16CCables, checking and lubricating .......... 6-26
Care ........................................................ 7-1
Catalytic converter ................................ 3-18
Clutch lever ........................................... 3-15
Clutch lever free play, adjusting ............ 6-21
Coolant.................................................. 6-14
Coolant temperature warning light .......... 3-4
Cowlings and panels,
removing and installing ......................... 6-6DDimmer switch ...................................... 3-14
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack ................................... 6-24EEngine break-in ....................................... 5-3
Engine oil and oil filter cartridge ............ 6-11
Engine stop switch ................................ 3-14
Engine trouble warning light.................... 3-7
EXUP system ........................................ 3-26
FFor solo riding ......................................... 9-2
Front and rear brake pads, checking .... 6-22
Front fork, adjusting .............................. 3-21
Front fork, checking .............................. 6-29
Fuel....................................................... 3-17
Fuel consumption, tips for reducing........ 5-3
Fuel level warning light ........................... 3-4
Fuel tank breather/overflow hose ......... 3-18
Fuel tank cap ........................................ 3-16
Fuses, replacing ................................... 6-32HHandlebar switches .............................. 3-13
Hazard switch ....................................... 3-14
Headlight bulb, replacing ...................... 6-33
Helmet holding cable ............................ 3-20
High beam indicator light ........................ 3-4
Horn switch ........................................... 3-14IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-27
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-7
Indicator and warning lights .................... 3-3KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-35
Luggage strap holders .......................... 3-25MMain switch/steering lock........................ 3-2
Model label ............................................. 9-2
Multi-function meter unit ......................... 3-7
NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PParking .................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-14
Periodic maintenance and lubrication
chart ...................................................... 6-2
Pre-operation check list........................... 4-2RRear brake light switch, adjusting ......... 6-22SSafety information ................................... 1-1
Seats ..................................................... 3-19
Shifting .................................................... 5-2
Shift pedal ............................................. 3-15
Shift timing indicator light ........................ 3-7
Shock absorber assembly, adjusting .... 3-23
Sidestand .............................................. 3-26
Sidestand, checking and lubricating...... 6-28
Spark plugs, checking ........................... 6-10
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch............................................ 3-14
Steering, checking................................. 6-30
Storage.................................................... 7-3
Supporting the motorcycle .................... 6-36
Swingarm pivots, lubricating ................. 6-29TTail/brake light ....................................... 6-35
Throttle cable free play, checking ......... 6-18
U2C0E0E0.book Page 1 Friday, September 16, 2005 8:59 AM