2003 YAMAHA YZF-R6 engine

2-1
2
EAU00026
2-DESCRIPTION Left view1. Front fork rebound damping force
adjusting screw (page 3-24)
2. Front fork spring preload adjusting bolt (page 3-23)
3. Fuse box 2 (page 6-40)
4. Coolant reservoir (page 6-14)
5. Shock absorber assembly spring
preload adjusting ring (page 3-25)
6. Shock absorber assembly compression
damping force adjusting screw (page 3-26)7. Owner’s tool kit (page 6-1)
8. Shock absorber assembly rebound
damping force adjusting screw (page 3-26)
9. Shift pedal (page 3-15)
10. Engine oil drain bolt (page 6-11)
11. Engine oil filter cartridge (page 6-11)
12. Front fork compression damping force
adjusting screw (page 3-24)
U5SLE0.book Page 1 Wednesday, September 11, 2002 11:46 AM

DESCRIPTION
2-2
2
Right view13. Luggage strap holder (page 3-27)
14. Helmet holder (page 3-21)
15. Fuse box 1 (page 6-40)
16. Main fuse (page 6-40)
17. Battery (page 6-38)
18. Throttle stop screw (page 6-23)
19. Air filter element (page 6-19)20. Front brake fluid reservoir (page 6-31)
21. Radiator cap (page 6-16)
22. Coolant drain bolt (page 6-16)
23. Engine oil filler cap (page 6-10)
24. Brake pedal (page 3-16)
25. Engine oil dipstick (page 6-10)
26. Rear brake fluid reservoir (page 6-31)
U5SLE0.book Page 2 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-2
3


Do not place any key close to
magnets (this includes, but not
limited to, products such as
speakers, etc.).


Do not place heavy items on
any key.


Do not grind any key or alter its
shape.


Do not disassemble the plastic
part of any key.


Do not put two keys of any im-
mobilizer system on the same
key ring.


Keep the standard keys as well
as keys of other immobilizer
systems away from this vehi-
cle’s code re-registering key.


Keep other immobilizer system
keys away from the main switch
as they may cause signal inter-
ference.
_
EAU04984
Main switch/steering lock The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering.NOTE:_ Be sure to use the standard key (black
bow) for regular use of the vehicle. To
minimize the risk of losing the code re-
registering key (red bow), keep it in a
safe place and only use it for code re-
registering. _
EAU04562
ON
All electrical circuits are supplied with
power, and the meter lighting, taillight,
license plate light and auxiliary lights
come on, and the engine can be start-
ed. The key cannot be removed.NOTE:_ The headlights come on automatically
when the engine is started and stay on
until the key is turned to “OFF”, even if
the engine stalls. _
EAU00038
OFF
All electrical systems are off. The key
can be removed.
U5SLE0.book Page 2 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
EAU03034
Indicator and warning lights
EAU04121
Turn signal indicator lights “”
and “”
The corresponding indicator light flash-
es when the turn signal switch is
pushed to the left or right.
EAU04894
Fuel level warning light “”
This warning light comes on when the
fuel level drops below approximately
3.5 L. When this occurs, refuel as soon
as possible.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.NOTE:_ This model is also equipped with a self-
diagnosis device for the fuel level de-
tection circuit. If the fuel level detection
circuit is defective, the following cycle
will be repeated until the malfunction is
corrected: The fuel level warning light
will flash eight times, then go off for
2.5 seconds. If this occurs, have a
Yamaha dealer check the motorcycle. _
1. Right turn signal indicator light “”
2. Fuel level warning light “”
3. Oil level warning light “”
4. Neutral indicator light “”
5. Engine trouble warning light “”
6. High beam indicator light “”
7. Immobilizer system indicator light “”
8. Left turn signal indicator light “”
U5SLE0.book Page 4 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
EAU04895
Oil level warning light “”
This warning light comes on when the
engine oil level is low.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.
NOTE:_

Even if the oil level is sufficient, the
warning light may flicker when
riding on a slope or during sudden
acceleration or deceleration, but
this is not a malfunction.


This model is also equipped with a
self-diagnosis device for the oil
level detection circuit. If the oil lev-
el detection circuit is defective, the
following cycle will be repeated
until the malfunction is corrected:
The oil level warning light will flash
ten times, then go off for 2.5 sec-
onds. If this occurs, have a
Yamaha dealer check the motor-
cycle.
_
EAU00061
Neutral indicator light “N”
This indicator light comes on when the
transmission is in the neutral position.
EAU04896
Engine trouble warning light “”
This warning light comes on or flashes
when an electrical circuit monitoring
the engine is defective. When this oc-
curs, have a Yamaha dealer check the
self-diagnosis system. (See page 3-9
for an explanation of the self-diagnosis
device.)
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. If the warning light does not
come on for a few seconds, then go off,
have a Yamaha dealer check the elec-
trical circuit.
EAU00063
High beam indicator light “”
This indicator light comes on when the
high beam of the headlight is switched
on.
1. Right turn signal indicator light “”
2. Fuel level warning light “”
3. Oil level warning light “”
4. Neutral indicator light “”
5. Engine trouble warning light “”
6. High beam indicator light “”
7. Immobilizer system indicator light “”
8. Left turn signal indicator light “”U5SLE0.book Page 5 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-6
3
EAU04972*
Immobilizer system indicator light
“”
The electrical circuit of the indicator
light can be checked by turning the key
to “ON”.
If the indicator light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.
When the key is turned to “OFF” and
30 seconds have passed, the indicator
light will start flashing indicating the im-
mobilizer system is enabled. After
24 hours have passed, the indicator
light will stop flashing, however the im-
mobilizer system is still enabled.NOTE:_ This model is also equipped with a self-
diagnosis device for the immobilizer
system. If the immobilizer system is de-
fective, the indicator will start flashing
and the multi-function meter will display
an error code. (See “Self-diagnosis de-
vice” on page 3-9 for details.) _
EAU04975
Shift timing indicator light
This indicator light can be set to come
on and go off at the desired engine
speeds and is used to inform the rider
when it is time to shift to the next higher
gear.
The electrical circuit of the indicator
light can be checked by turning the key
to “ON”.If the indicator light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit. (See pages 3-10–3-12 for a de-
tailed explanation of the function of this
indicator light and on how to set it.)
EAU04923
Coolant temperature warning light
“”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and allow
the engine to cool.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.
EC000002
CAUTION:_ Do not operate the engine if it is
overheated. _
1. Shift timing indicator light
2. Coolant temperature warning light “”
3. Coolant temperature display
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INSTRUMENT AND CONTROL FUNCTIONS
3-7
3
CB-25E
Coolant
temperatureDisplay Conditions What to do0–39 °CMessage “LO” is
displayed.OK. Go ahead with riding.
40–116 °CTemperature is
displayed.OK. Go ahead with riding.
117–139 °CTemperature flashes.
Warning light comes on.Stop the motorcycle and allow it to
idle until the coolant temperature
goes down.
If the temperature does not go
down, stop the engine. (See the
“Engine overheating” section on
page 6-53 for further instructions.)
Above 140 °CMessage “HI” flashes.
Warning light comes on.Stop the engine and allow it to cool.
(See the “Engine overheating” sec-
tion on page 6-53 for further in-
structions.)
U5SLE0.book Page 7 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-9
3To reset a tripmeter, select it by push-
ing the “SELECT” button, and then
push the “RESET” button for at least
one second. If you do not reset the fuel
reserve tripmeter manually, it will reset
itself automatically and the display will
return to the prior mode after refueling
and traveling 5 km.
Clock mode
Turn the key to “ON”.
To change the display to the clock
mode, push the “SELECT” button for at
least one second.
To change the display back to the prior
mode, push the “SELECT” button.
To set the clock:
1. Push the “SELECT” button and
“RESET” button together for at
least two seconds.
2. When the hour digits start flashing,
push the “RESET” button to set
the hours.
3. Push the “SELECT” button, and
the minute digits will start flashing.4. Push the “RESET” button to set
the minutes.
5. Push the “SELECT” button and
then release it to start the clock.
Self-diagnosis devices
This model is equipped with a self-di-
agnosis device for various electrical cir-
cuits.
If any of those circuits are defective,
the engine trouble warning light will
come on, and then the multi-function
display will indicate a two-digit error
code (e.g., 11, 12, 13).
This model is also equipped with a self-
diagnosis device for the immobilizer
system.
If any of the immobilizer system circuits
are defective, the immobilizer system
indicator light will flash, and then the
multi-function display will indicate a
two-digit error code (e.g., 51, 52, 53).
NOTE:_ If the multi-function display indicates
error code 52, this could be caused by
transponder interference. If this error
appears, try the following. _1. Use the code re-registering key to
start the engine.NOTE:_ Make sure there are no other immobi-
lizer keys close to the main switch, and
do not keep more than one immobilizer
key on the same key ring! Immobilizer
system keys may cause signal interfer-
ence, which may prevent the engine
from starting. _2. If the engine starts, turn it off, and
try starting the engine with the
standard keys.
3. If one or both of the standard keys
do not start the engine, take the
vehicle, the code re-registering
key and both standard keys to a
Yamaha dealer and have the stan-
dard keys re-registered.
U5SLE0.book Page 9 Wednesday, September 11, 2002 11:46 AM