2003 YAMAHA YZF-R6 check engine light

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6Before 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. @
ECA00021
CAUTION:@ Do not use any tools to remove or
install 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, twist
it back and forth while pushing it in. @
EAU04941
Engine oil and oil filter
cartridge The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication chart.
To check the engine oil level
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:_ Make sure that the motorcycle is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result in
a false reading. _2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles.
a. Spark plug gapSpark plug gap:
0.6–0.7 mm
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf)
U5SLE0.book Page 9 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
ECA00133
CAUTION:_

In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.


Make sure that no foreign mate-
rial enters the crankcase.
_13. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.NOTE:_ After the engine is started, the engine
oil level warning light should go off if the
oil level is sufficient. _
EC000067
CAUTION:_ If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha deal-
er check the vehicle. _14. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU04945
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
To check the coolant level
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:_

The coolant level must be checked
on a cold engine since the level
varies with engine temperature.


Make sure that the motorcycle is
positioned straight up when
checking the coolant level. A slight
tilt to the side can result in a false
reading.
_
U5SLE0.book Page 13 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
622. Install the radiator cap, start the
engine, let it idle for several min-
utes, and then turn it off.
23. Remove the radiator cap to check
the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radia-
tor, and then install the radiator
cap.
24. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
25. Connect the air intake duct, and
then tighten the clamp screw.
26. Install the panel and the cowling.
EAU04946*
Checking the air filter element The air filter element should be
checked at the intervals specified in the
periodic maintenance and lubrication
chart. Check the air filter element more
frequently if you are riding in unusually
wet or dusty areas.
1. Remove the rider seat. (See page
3-19 for rider seat removal and in-
stallation procedures.)
2. Remove the fuel tank bolts and
slightly lift the fuel tank.
1. Bolt (× 2)
U5SLE0.book Page 19 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-45
6
EAU04574
Replacing the license plate
light bulb 1. Remove the license plate light unit
by removing the screws.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 license plate light unit by
installing the screws.
EAU01579
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 mainte-
nance requiring the motorcycle to
stand upright. Check that the motor-
cycle is in a stable and level position
before starting any maintenance. A
strong wooden box can be placed un-
der 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.
1. Screw (× 2)
1. License plate light bulb
2. License plate light unit
U5SLE0.book Page 45 Wednesday, September 11, 2002 11:46 AM

10-INDEXAAir filter element, checking ..................... 6-19
Air intake duct ........................................ 6-22
Anti-theft alarm ...................................... 3-13
Auxiliary light bulb, replacing .................. 6-43BBattery ................................................... 6-38
Brake and clutch levers, checking and
lubricating ............................................ 6-35
Brake and shift pedals, checking and
lubricating ............................................ 6-35
Brake fluid, changing ............................. 6-32
Brake fluid level, checking...................... 6-31
Brake lever............................................. 3-16
Brake light switch (rear), adjusting ......... 6-29
Brake pads, checking............................. 6-30
Brake pedal............................................ 3-16
Brake pedal position, adjusting .............. 6-29CCables, checking and lubricating............ 6-34
Care.........................................................7-1
Catalytic converter ................................. 3-19
Clutch lever ............................................ 3-15
Clutch lever free play, adjusting ............. 6-27
Conversion table ......................................8-5
Coolant .................................................. 6-13
Changing .......................................... 6-15
Checking .......................................... 6-13
Coolant temperature warning light............3-6
Cowlings and panels, removing and
installing ................................................6-5
DDimmer switch ....................................... 3-13
Drive chain, lubricating .......................... 6-33
Drive chain slack ................................... 6-32
Adjusting .......................................... 6-33
Checking .......................................... 6-32EEngine break-in ....................................... 5-3
Engine idling speed ............................... 6-23
Engine oil and oil filter cartridge ............... 6-9
Engine stop switch................................. 3-14
Engine trouble warning light .................... 3-5FFront fork, adjusting ............................... 3-23
Front fork, checking ............................... 6-37
Fuel ....................................................... 3-17
Fuel consumption, tips for reducing ......... 5-3
Fuel level warning light ............................ 3-4
Fuel tank breather hose ......................... 3-18
Fuel tank cap ......................................... 3-17
Fuses, replacing .................................... 6-40HHandlebar switches ............................... 3-13
Hazard switch ........................................ 3-14
Headlight bulb, replacing ....................... 6-41
Helmet holders ...................................... 3-21
High beam indicator light ......................... 3-5
Horn switch ........................................... 3-14
IIdentification numbers ..............................9-1
Ignition circuit cut-off system ..................3-28
Immobilizer system..................................3-1
Immobilizer system indicator light.............3-6
Indicator and warning lights......................3-4KKey identification number .........................9-1LLicense plate light bulb, replacing...........6-45
Luggage strap holders ...........................3-27MMain switch/steering lock .........................3-2
Model label ..............................................9-2
Multi-function display................................3-8NNeutral indicator light ...............................3-5OOil level warning light ...............................3-5PParking.....................................................5-4
Part locations ...........................................2-1
Pass switch ............................................3-13
Periodic maintenance and
lubrication chart .....................................6-2
Pre-operation check list ............................4-1
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INDEX
SSafety information.................................... 1-1
Seats ..................................................... 3-19
Passenger seat ................................ 3-20
Rider seat ........................................ 3-19
Shifting .................................................... 5-2
Shift pedal ............................................. 3-15
Shift points (for Switzerland only)............. 5-3
Shift timing indicator light ......................... 3-6
Shock absorber assembly, adjusting ..... 3-25
Sidestand .............................................. 3-27
Sidestand, checking and lubricating....... 6-36
Spark plugs, checking ............................. 6-8
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch ............................................ 3-15
Steering, checking ................................. 6-37
Storage.................................................... 7-4
Storage compartment ............................ 3-21
Supporting the motorcycle ..................... 6-45TTachometer ........................................... 3-13
Tail/brake light ....................................... 6-44
Throttle cable free play, adjusting .......... 6-23
Throttle grip and cable, checking and
lubricating............................................ 6-34
Tires ...................................................... 6-24
Tool kit..................................................... 6-1
Troubleshooting..................................... 6-51
Troubleshooting charts .......................... 6-52
Turn signal indicator lights ....................... 3-4
Turn signal light bulb, replacing ............. 6-44
Turn signal switch ................................. 3-14VValve clearance, adjusting .................... 6-24
Vehicle identification number................... 9-1WWheel bearings, checking ..................... 6-38
Wheel (front) ......................................... 6-46
Installing .......................................... 6-47
Removing ........................................ 6-46
Wheel (rear) .......................................... 6-49
Installing .......................................... 6-50
Removing ........................................ 6-49
Wheels .................................................. 6-27
U5SLE0.book Page 2 Wednesday, September 11, 2002 11:46 AM