YAMAHA YZF-R1 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.
EAU34072
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.


Make sure that the end of the fuel
tank breather/overflow hose is po-
sitioned outside of the cowling.
Recommended fuel:
PREMIUM UNLEADED GASOLINE
ONLY
Fuel tank capacity:
18.0 L (4.76 US gal) (3.96 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on):
3.2 L (0.85 US gal) (0.70 Imp.gal)
1. Fuel tank breather/overflow hose
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INSTRUMENT AND CONTROL FUNCTIONS
3-19
3
EAU13441
Catalytic converter 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.
EAU33861
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. Lift the front of the passenger seat
and pull it forward.
To install the passenger seat
1. Insert the projection on the rear of
the passenger seat into the seat
holder 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.
EAU33870
Helmet holders The helmet holders are located on the
bottom of the passenger seat.
To secure a helmet to a helmet hold-
er
1. Remove the passenger seat. (See
page 3-19.)
2. Attach the helmet to a helmet hold-
er, and then securely install the
passenger seat.
WARNING
EWA11040
Never ride with a helmet attached to
a helmet holder, since the helmet
may hit objects, causing loss of con-trol and possibly an accident.To release a helmet from a helmet
holder
Remove the passenger seat, remove
the helmet from the helmet holder, and
then install the seat.
1. Projection
2. Seat holder
1. Helmet holder
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INSTRUMENT AND CONTROL FUNCTIONS
3-21
3
EAU14741
Adjusting the front fork This front fork is equipped with spring
preload adjusting bolts, rebound damp-
ing force adjusting screws and com-
pression damping force adjusting
screws.
WARNING
EWA10180
Always adjust both fork legs equal-
ly, otherwise poor handling and lossof stability may result.
Spring preload
To 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 cap bolt.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).
1. Spring preload adjusting bolt
1. Current setting
2. Front fork cap bolt
Spring preload setting:
Minimum (soft):
8
Standard:
5
Maximum (hard):
0
1. Rebound damping force adjusting screw
Rebound damping setting:
Minimum (soft):
26 click(s) in direction (b)*
Standard:
10 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting screw fully turned
in direction (a)
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INSTRUMENT AND CONTROL FUNCTIONS
3-22
3Compression damping force
To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting screw
on each fork leg in direction (a). To de-
crease the compression damping force
and thereby soften the compression
damping, turn the adjusting screw 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 in
production, 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 thespecifications 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.
1. Compression damping force adjusting screwCompression damping setting:
Minimum (soft):
25 click(s) in direction (b)*
Standard:
10 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting screw fully turned
in direction (a)
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INSTRUMENT AND CONTROL FUNCTIONS
3-23
3 Spring 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. Special wrench
2. Spring preload adjusting ring
3. Position indicator
Spring preload setting:
Minimum (soft):
1
Standard:
5
Maximum (hard):
9
1. Rebound damping force adjusting screw
Rebound damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
12 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
3-24
3direction (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:
12 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
3-25
3
EAU15181
Luggage strap holders There are four luggage strap holders on
the bottom of the passenger seat. To
use the strap holders, remove the pas-
senger 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.)
EAU15281
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:
ECA10191


The EXUP system has been set
and extensively tested at the
Yamaha factory. Changing
these settings without sufficient
technical knowledge may result
in poor performance of or dam-
age to the engine.


If the EXUP system cannot be
heard when the main switch is
turned on, have a Yamaha deal-er check it.
EAU15301
Sidestand The sidestand is located on the left side
of the frame. Raise the sidestand or
lower it with your foot while holding the
vehicle upright.NOTE:The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See further down for an explanation ofthe ignition circuit cut-off system.)
WARNING
EWA10240
The vehicle must not be ridden with
the sidestand down, or if the side-
stand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control.
Yamaha’s ignition circuit cut-off
system has been designed to assist
the operator in fulfilling the respon-
sibility of raising the sidestand be-
fore starting off. Therefore, check
this system regularly as described
1. Luggage strap holder
2. Hook
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INSTRUMENT AND CONTROL FUNCTIONS
3-26
3below and have a Yamaha dealer re-
pair it if it does not function proper-
ly.
EAU15312
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 le-
ver is pulled, but the sidestand is
still down.


It cuts the running engine when the
transmission is in gear and the sid-
estand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.WARNING
EWA10250
If a malfunction is noted, have a
Yamaha dealer check the system be-fore riding.
U4C8E1E0.book Page 26 Wednesday, June 13, 2007 9:24 AM