2003 YAMAHA YZF-R6 transmission

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
3-15
3
EAU00143
Start switch “”
Push this switch to crank the engine
with the starter.
EC000005
CAUTION:@ See page 5-1 for starting instruc-
tions prior to starting the engine. @
EAU00152
Clutch lever The clutch lever is located at the left
handlebar grip. To disengage the
clutch, pull the lever toward the handle-
bar grip. To engage the clutch, release
the lever. The lever should be pulled
rapidly and released slowly for smooth
clutch operation.
The clutch lever is equipped with a
clutch switch, which is part of the ignition
circuit cut-off system. (See page 3-28
for an explanation of the ignition circuit
cut-off system.)
EAU00157
Shift pedal The shift pedal is located on the left
side of the engine and is used in com-
bination with the clutch lever when
shifting the gears of the 6-speed con-
stant-mesh transmission equipped on
this motorcycle.
1. Clutch lever
1. Shift pedal
U5SLE0.book Page 15 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-28
3
EW000044
WARNING
@ The motorcycle must not be ridden
with the sidestand down, or if the
sidestand cannot be properly
moved up (or does not stay up), oth-
erwise the sidestand could contact
the ground and distract the opera-
tor, resulting in a possible loss of
control. Yamaha’s ignition circuit
cut-off system has been designed to
assist the operator in fulfilling the
responsibility of raising the side-
stand before starting off. Therefore,
check this system regularly as de-
scribed below and have a Yamaha
dealer repair it if it does not function
properly. @
EAU03720
Ignition circuit cut-off system The ignition circuit cut-off system (com-
prising the sidestand switch, clutch
switch and neutral switch) has the fol-
lowing functions.

It prevents starting when the trans-
mission is in gear and the side-
stand is up, but the clutch lever is
not pulled.


It prevents starting when the trans-
mission is in gear and the clutch
lever is pulled, but the sidestand is
still down.


It cuts the running engine when
the transmission is in gear and the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.
EW000045
WARNING
_ If a malfunction is noted, have a
Yamaha dealer check the system
before riding. _
U5SLE0.book Page 28 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-29
3
CD-01E
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is set to “”.
3. Turn the key to “ON”.
4. Shift the transmission into the neutral position.
5. Push the start switch.
Does the engine start?
The neutral switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
With the engine still running:
6. Move the sidestand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the sidestand down.
Does the engine stall?After the engine has stalled:
10. Move the sidestand up.
11. Keep the clutch lever pulled.
12. Push the start switch.
Does the engine start?
The sidestand switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The clutch switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
NO
NOTE:This check is most reliable if performed with
a warmed-up engine.
YESYES NO
The system is OK.
The motorcycle can be ridden.
YES NO
U5SLE0.book Page 29 Wednesday, September 11, 2002 11:46 AM

5-1
5
EAU00372
5-OPERATION AND IMPORTANT RIDING POINTS
EAU00373
WARNING
@

Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer re-
garding any control or function
that you do not thoroughly un-
derstand.


Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate
ventilation.


Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
@
EAU04953
Starting the engine In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:

The transmission is in the neutral
position.


The transmission is in gear with
the clutch lever pulled and the
sidestand up.
EW000054
WARNING
_

Before starting the engine,
check the function of the igni-
tion circuit cut-off system ac-
cording to the procedure
described on page 3-29.


Never ride with the sidestand
down.
_1. Turn the key to “ON” and make
sure that the engine stop switch is
set to “”.
ECA00147
CAUTION:_ The following warning lights and in-
dicator light should come on for a
few seconds, then go off.

Oil level warning light


Fuel level warning light


Coolant temperature warning
light


Shift timing indicator light


Engine trouble warning light


Immobilizer system indicator
light
If a warning or indicator light does
not go off, see pages 3-4–3-7 for the
corresponding warning and indica-
tor light circuit check.
_2. Shift the transmission into the neu-
tral position.NOTE:_ When the transmission is in the neutral
position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical cir-
cuit. _
U5SLE0.book Page 1 Wednesday, September 11, 2002 11:46 AM

OPERATION AND IMPORTANT RIDING POINTS
5-2
5 3. Start the engine by pushing the
start switch.
NOTE:_ If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-
serve the battery. Do not crank the en-
gine more than 10 seconds on any one
attempt. _
ECA00045
CAUTION:_ For maximum engine life, never ac-
celerate hard when the engine is
cold! _NOTE:_ The engine is warm when it quickly re-
sponds to the throttle. _
EAU00423
Shifting Shifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc.
The gear positions are shown in the
illustration.NOTE:@ To shift the transmission into the neu-
tral position, press the shift pedal down
repeatedly until it reaches the end of its
travel, and then slightly raise it. @
EC000048
CAUTION:@

Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long dis-
tances. The transmission is
properly lubricated only when
the engine is running. Inade-
quate lubrication may damage
the transmission.


Always use the clutch while
changing gears to avoid dam-
aging the engine, transmission,
and drive train, which are not
designed to withstand the
shock of forced shifting.
@
1. Shift pedal
N. Neutral position
U5SLE0.book Page 2 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6
EAU03976
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addition,
have the oil seals of the master cylin-
ders and calipers as well as the brake
hoses replaced at the intervals listed
below or whenever they are damaged
or leaking.

Oil seals: Replace every two
years.


Brake hoses: Replace every four
years.
EAU00744
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
To check the drive chain slack
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:@ When checking and adjusting the drive
chain slack, the motorcycle should be
positioned straight up and there should
be no weight on it. @2. Shift the transmission into the neu-
tral position.3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain
slack as shown.
4. If the drive chain slack is incorrect,
adjust it as follows.
a. Drive chain slackDrive chain slack:
35–45 mm
U5SLE0.book Page 32 Wednesday, September 11, 2002 11:46 AM

SPECIFICATIONS
8-2
8
Cooling system capacity
(total amount)
2.15 L
Air filterWet element
Fuel
Type PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity 17 L
Amount remaining when the
fuel level warning light comes
on 3.5 L
Electric fuel injection
ModelINP-250/4
Manufacturer NIPPON INJECTOR
Spark plug
Manufacturer/type NGK / CR9EK, CR10EK
Gap 0.6–0.7 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 1.955
Secondary reduction system Chain drive
Secondary reduction ratio 3.000
Number of drive chain
sprocket teeth (front/rear) 16/48
Transmission type Constant-mesh 6-speed
Operation Left footGear ratio
1st 2.846
2nd 1.947
3rd 1.556
4th 1.333
5th 1.190
6th 1.083
Chassis
Frame type Diamond
Caster angle 24°
Trail 86 mm
Tires
Front
Type Tubeless tire
Size 120/60 ZR17 M/C (55 W)
Manufacturer/model Michelin / Pilot SPORT N
Dunlop / D208F L
Rear
Type Tubeless tire
Size 180/55 ZR17 M/C (73 W)
Manufacturer/model Michelin / Pilot SPORT B
Dunlop / D208 L
U5SLE0.book Page 2 Wednesday, September 11, 2002 11:46 AM