2003 YAMAHA YZF-R6 light

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.
_
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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)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
6
EAU01357
Adjusting the brake pedal
position The top of the brake pedal should be
positioned approximately 7–11 mm be-
low the bottom of the footrest bracket
as shown. Periodically check the brake
pedal position and, if necessary, have
a Yamaha dealer adjust it.
EW000109
WARNING
_ A soft or spongy feeling in the brake
pedal can indicate the presence of
air in the hydraulic system. If there
is air in the hydraulic system, have a
Yamaha dealer bleed the system be-
fore operating the motorcycle. Air in
the hydraulic system will diminish
the braking performance, which
may result in loss of control and an
accident. _
EAU00713
Adjusting the rear brake light
switch The rear brake light switch, which is ac-
tivated by the brake pedal, is properly
adjusted when the brake light comes
on just before braking takes effect. If
necessary, adjust the brake light switch
as follows.
Turn the adjusting nut while holding the
rear brake light switch in place. To
make the brake light come on earlier,
turn the adjusting nut in direction
a. To
make the brake light come on later,
turn the adjusting nut in direction
b.
a. Distance between brake pedal and footrest
bracket
1. Rear brake light switch
2. Rear brake light switch adjusting nut
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
6
EAU04981
Replacing the fuses The main fuse and fuse box 1 are locat-
ed under the rider seat. (See page 3-19
for rider seat removal and installation
procedures.)Fuse box 2 is located under panel B.
(See page 6-7 for panel removal and
installation procedures.)If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.1. Spare main fuse
2. Main fuse
3. Fuse box 1
4. Electronic fuel injection fuse
5. Turn signal light, taillight, license plate light,
auxiliary light and hazard fuse
6. Spare fuse
1. Fuse box 2
2. Headlight fuse
3. Radiator fan fuse
4. Ignition fuse
5. Signaling system fuse
6. Odometer, clock and immobilizer system fuse
(backup fuse)
7. Spare fuse (× 2)
Specified fuses:
Main fuse: 40 A
Fuse box 1:
Electronic fuel injection
fuse: 15 A
Turn signal light,
taillight, license plate
light, auxiliary light and
hazard fuse: 10 A
Fuse box 2:
Headlight fuse: 20 A
Signaling system fuse: 15 A
Radiator fan fuse: 15 A
Ignition fuse: 15 A
Odometer, clock and
immobilizer system fuse
(backup fuse): 10 A
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-41
6
EC000103
CAUTION:_ Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire. _3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAU04954
Replacing a headlight bulb This motorcycle is equipped with
quartz bulb headlights. If a headlight
bulb burns out, replace it as follows.
1. Remove panel B (if replacing the
left headlight bulb) or panel A (if
replacing the right headlight bulb).
(See page 6-7 for panel removal
and installation procedures.)
2. Remove the headlight bulb cover
by turning it counterclockwise.3. Disconnect the headlight coupler.1. Headlight bulb cover
1. Headlight coupler
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-42
6 4. Unhook the headlight bulb holder,
and then remove the defective
bulb.
EW000119
WARNING
_ Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooled
down. _5. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
EC000104
CAUTION:_ Take care not to damage the follow-
ing parts:

Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosi-
ty of the bulb, and the bulb life
will be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.


Headlight lens
Do not affix any type of tinted
film or stickers to the head-
light lens.
Do not use a headlight bulb of
a wattage higher than speci-
fied.
_
1. Headlight bulb holder
1. Do not touch the glass part of the bulb.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
66. Connect the headlight coupler.
7. Install the headlight bulb cover by
turning it clockwise.
8. Install the panel.
9. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU04982
Replacing an auxiliary light
bulb This motorcycle is equipped with two
auxiliary 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.
1. Auxiliary light bulb cover
2. Quick fastener
1. Auxiliary light bulb
2. Auxiliary light bulb socket
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
6
NOTE:_ To install the quick fastener, push the
center pin out so that it will protrude
from the fastener head, insert the fas-
tener into the auxiliary light bulb cover,
and then push the protruding pin in until
it is flush with the fastener head. _
EAU03730
Tail/brake light This motorcycle is equipped with an
LED type of tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
EAU03497
Replacing a turn signal light
bulb 1. Remove the turn signal light lens
by removing the screw.
2. Remove the defective bulb by
pushing it in and turning it
counterclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw.
ECA00065
CAUTION:@ Do not overtighten the screw, other-
wise the lens may break. @
1. Quick fastener
2. Pin
After removal
Before installation
1. Screw
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