YAMAHA YZF-R6 2008 Owner's Guide

INSTRUMENT AND CONTROL FUNCTIONS
3-17
3
EAU13072
Fuel tank cap To open the fuel tank cap
Open the fuel tank cap lock cover, in-
sert the key into the lock, and then turn
it 1/4 turn clockwise. The lock will be re-
leased and the fuel tank cap can be
opened.
To close the fuel tank cap
1. Push the fuel tank cap into position
with the key inserted in the lock.
2. Turn the key counterclockwise to
the original position, remove it, and
then close the lock cover.
NOTE:The fuel tank cap cannot be closed un-
less the key is in the lock. In addition,
the key cannot be removed if the cap isnot properly closed and locked.
WARNING
EWA11090
Make sure that the fuel tank cap isproperly closed before riding.
EAU13220
Fuel Make sure that there is sufficient fuel in
the tank. When refueling, be sure to in-
sert the pump nozzle into the fuel tank
filler hole and to fill the tank to the bot-
tom of the filler tube as shown.
WARNING
EWA10880


Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.


Avoid spilling fuel on the hot en-gine.
1. Fuel tank cap lock cover
2. Unlock.
1. Fuel tank filler tube
2. Fuel level
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INSTRUMENT AND CONTROL FUNCTIONS
3-18
3
CAUTION:
ECA10070
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfac-es or plastic parts.
EAU13390
CAUTION:
ECA11400
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,as well as to the exhaust system.
Your Yamaha engine has been de-
signed to use premium unleaded gaso-
line with a research octane number of
95 or higher. If knocking (or pinging) oc-curs, use a gasoline of a different
brand. Use of unleaded fuel will extend
spark plug life and reduce maintenance
costs.
EAU39450
Fuel tank breather/overflow
hose Before operating the motorcycle:

Check the fuel tank breather/over-
flow hose connection.


Check the fuel tank breather/over-
flow hose for cracks or damage,
and replace it if damaged.


Make sure that the end of the fuel
tank breather/overflow hose is not
blocked, and clean it if necessary.
Recommended fuel:
PREMIUM UNLEADED GASOLINE
ONLY
Fuel tank capacity:
17.3 L (4.57 US gal) (3.81 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on):
3.5 L (0.92 US gal) (0.77 Imp.gal)
1. Fuel tank breather/overflow hose
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INSTRUMENT AND CONTROL FUNCTIONS
3-19
3
EAU13442
Catalytic converters This vehicle is equipped with catalytic
converters in the exhaust system.
WARNING
EWA10860
The exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-ing any maintenance work.CAUTION:
ECA10700
The following precautions must be
observed to prevent a fire hazard or
other damages.

Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.


Never park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.


Do not allow the engine to idletoo long.
EAU39031
Seats Rider seat
To remove the rider seatPull back the rear of the rider seat as
shown, remove the bolts, and then pull
the seat off.
To install the rider seatInsert the projection on the front of the
rider seat into the seat holder as
shown, place the seat in the original po-
sition, and then install the bolts.Passenger seat
To remove the passenger seat
1. Insert the key into the seat lock,
and then turn it clockwise.
1. Bolt
1. Projection
2. Seat holder
1. Passenger seat lock
2. Unlock.
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INSTRUMENT AND CONTROL FUNCTIONS
3-20
32. While holding the key in that posi-
tion, lift the front of the passenger
seat and pull it forward.
To install the passenger seat
1. Insert the projections on the pas-
senger seat into the seat holders
as shown, and then push the front
of the seat down to lock it in place.
2. Remove the key.NOTE:Make sure that the seats are properlysecured before riding.
EAU39072
Helmet holding cable A helmet holding cable is provided in
the owner’s tool kit to secure two hel-
mets to the helmet cable holder
equipped on the bottom of the passen-
ger seat.
To secure a helmet with the helmet
holding cable
1. Remove the passenger seat. (See
page 3-19.)
2. Clip the middle snap hook of the
cable onto the cable holder.3. Pass one of the other snap hooks
of the cable through the helmet
strap buckle, and then clip the
snap hook onto the cable holder as
shown.
4. Install the passenger seat.
1. Projection
2. Seat holder
1. Helmet holding cable
2. Helmet cable holder
3. Middle snap hook
1. Helmet holding cable
2. Helmet
1. Helmet holding cable
2. Helmet
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INSTRUMENT AND CONTROL FUNCTIONS
3-21
3
WARNING
EWA14330
Never ride with a helmet attached to
a helmet holding cable, since the
helmet may hit objects, causing lossof control and possibly an accident.
To release a helmet from the helmet
holding cable
1. Remove the passenger seat.
2. Unfasten the snap hooks from the
cable holder, and then remove the
cable from the helmet strap buck-
le.
3. Install the passenger seat.
EAU38942
Adjusting the front fork This front fork is equipped with spring
preload adjusting bolts, rebound damp-
ing force adjusting screws, compres-
sion damping force adjusting bolts (for
fast compression damping) and com-
pression damping force adjusting bolts
(for slow compression damping).
WARNING
EWA10180
Always adjust both fork legs equal-
ly, otherwise poor handling and lossof stability may result.
Spring preloadTo increase the spring preload and
thereby harden the suspension, turn
the adjusting bolt on each fork leg in di-
rection (a). To decrease the spring pre-
load and thereby soften the
suspension, turn the adjusting bolt on
each fork leg in direction (b).
NOTE:Align the appropriate groove on the ad-
justing mechanism with the top of thefront fork collar.
1. Spring preload adjusting bolt
1. Current setting
2. Front fork collar
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INSTRUMENT AND CONTROL FUNCTIONS
3-22
3
Rebound damping force
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting screw on each
fork leg in direction (a). To decrease the
rebound damping force and thereby
soften the rebound damping, turn the
adjusting screw on each fork leg in di-
rection (b).Compression damping force
To adjust the compression damping
force (for fast compression damping)To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting bolt on
each fork leg in direction (a). To de-crease the compression damping force
and thereby soften the compression
damping, turn the adjusting bolt on
each fork leg in direction (b).
To adjust the compression damping
force (for slow compression damping)
Spring preload setting:
Minimum (soft):
0
Standard:
2
Maximum (hard):
51. Rebound damping force adjusting screw
Rebound damping setting:
Minimum (soft):
25 click(s) in direction (b)*
Standard:
20 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting screw fully turned
in direction (a)1. Compression damping force adjusting bolt
(for fast compression damping)
Compression damping setting (for
fast compression damping):
Minimum (soft):
4 turn(s) in direction (b)*
Standard:
2 turn(s) in direction (b)*
Maximum (hard):
0 turn(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)1. Compression damping force adjusting bolt
(for slow compression damping)
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INSTRUMENT AND CONTROL FUNCTIONS
3-23
3 To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting bolt on
each fork leg in direction (a). To de-
crease the compression damping force
and thereby soften the compression
damping, turn the adjusting bolt on
each fork leg in direction (b).
CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum orminimum settings.NOTE:Although the total number of clicks of a
damping force adjusting mechanism
may not exactly match the above spec-
ifications due to small differences inproduction, the actual number of clicks
always represents the entire adjusting
range. To obtain a precise adjustment,
it would be advisable to check the num-
ber of clicks of each damping force ad-
justing mechanism and to modify the
specifications as necessary.
EAU42940
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing ring, a rebound damping force ad-
justing screw, a compression damping
force adjusting bolt (for fast compres-
sion damping) and a compression
damping force adjusting bolt (for slow
compression damping).CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum orminimum settings.
Compression damping setting (for
slow compression damping):
Minimum (soft):
20 click(s) in direction (b)*
Standard:
15 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)
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INSTRUMENT AND CONTROL FUNCTIONS
3-24
3Spring preload
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction (a). To de-
crease the spring preload and thereby
soften the suspension, turn the adjust-
ing ring in direction (b).
NOTE:

Align the appropriate notch in the
adjusting ring with the position in-
dicator on the shock absorber.


Use the special wrench included in
the owner’s tool kit to make the ad-justment.Rebound damping force
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting screw in direction
(a). To decrease the rebound damping
force and thereby soften the rebound
damping, turn the adjusting screw in di-
rection (b).Compression damping force
Compression damping force (for fast
compression damping)To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting bolt in
1. Spring preload adjusting ring
2. Special wrench
3. Position indicator
Spring preload setting:
Minimum (soft):
1
Standard:
4
Maximum (hard):
91. Rebound damping force adjusting screw
Rebound damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
16 click(s) in direction (b)*
Maximum (hard):
3 click(s) in direction (b)*
* With the adjusting screw fully turned
in direction (a)1. Compression damping force adjusting bolt
(for fast compression damping)
2. Compression damping force adjusting bolt
(for slow compression damping)
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INSTRUMENT AND CONTROL FUNCTIONS
3-25
3 direction (a). To decrease the compres-
sion damping force and thereby soften
the compression damping, turn the ad-
justing bolt in direction (b).
Compression damping force (for slow
compression damping)To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting bolt in
direction (a). To decrease the compres-
sion damping force and thereby soften
the compression damping, turn the ad-
justing bolt in direction (b).
NOTE:Although the total number of clicks or
turns of a damping force adjusting
mechanism may not exactly match the
specifications listed due to small differ-
ences in production, the actual number
of clicks or turns always represents the
entire adjustment range. To obtain a
precise adjustment, it would be advis-
able to check the number of clicks or
turns of each damping force adjusting
mechanism and to modify the specifi-cations as necessary.
WARNING
EWA10220
This shock absorber contains highly
pressurized nitrogen gas. For prop-
er handling, read and understandthe following information before
handling the shock absorber. The
manufacturer cannot be held re-
sponsible for property damage or
personal injury that may result from
improper handling.


Do not tamper with or attempt to
open the gas cylinder.


Do not subject the shock ab-
sorber to an open flame or other
high heat sources, otherwise it
may explode due to excessive
gas pressure.


Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.


Always have a Yamaha dealerservice the shock absorber.
Compression damping setting (for
fast compression damping):
Minimum (soft):
4 turn(s) in direction (b)*
Standard:
3 turn(s) in direction (b)*
Maximum (hard):
0 turn(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)
Compression damping setting (for
slow compression damping):
Minimum (soft):
20 click(s) in direction (b)*
Standard:
16 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting bolt fully turned in
direction (a)
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INSTRUMENT AND CONTROL FUNCTIONS
3-26
3
EAU38961
Luggage strap holders There are six luggage strap holders,
four on the bottom of the passenger
seat and one on each passenger foot-
rest. To use the luggage strap holderson the passenger seat, remove the
passenger seat, unhook the straps
from the hooks, and then install the
seat with the straps hanging out from
under the passenger seat. (See page
3-19.)
EAU41940
EXUP system This model is equipped with Yamaha’s
EXUP (EXhaust Ultimate Power valve)
system. This system boosts engine
power by means of a valve that regu-
lates the diameter of the exhaust pipe.
The EXUP system valve is constantly
adjusted in accordance with the engine
speed by a computer-controlled servo-
motor.CAUTION:
ECA15610
The EXUP system has been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-mance of or damage to the engine.
1. Luggage strap holder
2. Hook
1. Luggage strap holderU13SE0E0.book Page 26 Monday, August 27, 2007 4:53 PM