2004 YAMAHA YZF-R1SC ABS

3-56
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY
CHK
ADJ
WARNING
CAUTION:
a
b
CAUTION:
EAS00158
ADJUSTING THE REAR SHOCK
ABSORBER ASSEMBLY
Securely support the motorcycle so that
there is no danger of it falling over.
Spring preload
Never go beyond the maximum or minimum
adjustment positions.
1. Adjust:

spring preload
a. Adjust the spring preload with the special
wrench and extension bar included in the
owner’s tool kit.
b. Turn the adjusting ring
1 in direction a or
b.
c. Align the desired position on the adjusting
ring with the stopper
2.
Direction
Spring preload is
increased (suspension is
harder).
Direction
Spring preload is
decreased (suspension
is softer).
Adjusting positions
Minimum: 1
Standard: 4
Maximum: 9
Rebound damping
Never go beyond the maximum or minimum
adjustment positions.
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3-57
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY
CHK
ADJ
a
b
CAUTION:
a
b
1. Adjust:

rebound damping
a. Turn the adjusting screw
1 in direction a or
b.
Direction
Rebound damping is
increased (suspension is
harder).
Direction
Rebound damping is
decreased (suspension
is softer).
Adjusting positions
Minimum: 20 clicks in direction
b *
Standard: 17 clicks in direction
b *
Maximum: 1 clicks in direction
b *
* with the adjusting screw fully
turned-in direction
a
Compression damping
Never go beyond the maximum or minimum
adjustment positions.
1. Adjust:

compression damping
a. Turn the adjusting screw
1 in direction a or
b.
Direction
Compression damping is
increased (suspension is
harder).
Direction
Compression damping is
decreased (suspension
is softer).
Adjusting positions
Minimum: 20 clicks in direction
b *
Standard: 12 clicks in direction
b *
Maximum: 1 clicks in direction
b *
* with the adjusting screw fully
turned-in direction
a
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3-59
AB
CHECKING THE TIRES
CHK
ADJ
WARNING
WARNING
2. Check:

tire surfaces
Damage / wear
Replace the tire.
Minimum tire tread depth
1.6 mm (0.06 in)
1Tire tread depth
2Sidewall
3Wear indicator

Do not use a tubeless tire on a wheel de-
signed only for tube tires to avoid tire fail-
ure and personal injury from sudden defla-
tion.

When using a tube tire, be sure to install the
correct tube.

Always replace a new tube tire and a new
tube as a set.

To avoid pinching the tube, make sure the
wheel rim band and tube are centered in the
wheel groove.

Patching a punctured tube is not recom-
mended. If it is absolutely necessary to do
so, use great care and replace the tube as
soon as possible with a good quality re-
placement.
ATire
BWheel
Tube wheelTube tire only
T beless wheelTube or tubelessTubeless wheeltire
After extensive tests, the tires listed below
have been approved by Yamaha Motor Co.,
Ltd. for this model. The front and rear tires
should always be by the same manufacturer
and of the same design. No guarantee con-
cerning handling characteristics can be giv-
en if a tire combination other than one ap-
proved by Yamaha is used on this
motorcycle.
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4-17
FRONT AND REAR BRAKESCHAS
CAUTION:
WARNING
EAS00579
Disc brake components rarely require dis-
assembly.
Therefore, always follow these preventive
measures:

Never disassemble brake components un-
less absolutely necessary.

If any connection on the hydraulic brake
system is disconnected, the entire brake
system must be disassembled, drained,
cleaned, properly filled, and bled after reas-
sembly.

Never use solvents on internal brake com-
ponents.

Use only clean or new brake fluid for clean-
ing brake components.

Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.

Avoid brake fluid coming into contact with
the eyes as it can cause serious injury.
FIRST AID FOR BRAKE FLUID ENTERING
THE EYES:

Flush with water for 15 minutes and get im-
mediate medical attention.
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4-65
Order Job / Part Q’ty Remarks
1
2
3
4
5
6
7
8
9
10Removing the rear shock absorber
assembly
EXUP servo motor
Self-locking nut / bolt
Self-locking nut / bolt
Self-locking nut / bolt
Self-locking nut
Rear shock absorber assembly
Oil seal / bearing / collar
Collar / self-locking nut / bolt
Connecting arm
Oil seal / bearing / collar
Relay arm1/1
1/1
1/1
1
1
6/3/3
1/1/1
2
2/1/1
1Remove the parts in the order listed.
Refer to “EXHAUST PIPE” in chapter 5.
For installation, reverse the removal
procedure.
92 Nm (9.2 m
kg, 67 ft
lb)44 Nm (4.4 m
kg, 32 ft
lb)
44 Nm (4.4 m
kg, 32 ft
lb)44 Nm (4.4 m
kg, 32 ft
lb)
REAR SHOCK ABSORBER ASSEMBLYCHAS
EAS00685
REAR SHOCK ABSORBER ASSEMBLY
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4-66
REAR SHOCK ABSORBER ASSEMBLYCHAS
WARNING
WARNING
EAS00687
HANDLING THE REAR SHOCK ABSORBER
AND GAS CYLINDER
This rear shock absorber and gas cylinder
contain highly compressed nitrogen gas.
Before handling the rear shock absorber or
gas cylinder, read and make sure you under-
stand the following information. The
manufacturer cannot be held responsible
for property damage or personal injury that
may result from improper handling of the
rear shock absorber and gas cylinder.

Do not tamper or attempt to open the rear
shock absorber or gas cylinder.

Do not subject the rear shock absorber or
gas cylinder to an open flame or any other
source of high heat. High heat can cause an
explosion due to excessive gas pressure.

Do not deform or damage the rear shock
absorber or gas cylinder in any way. If the
rear shock absorber, gas cylinder or both
are damaged, damping performance will
suffer.
EAS00689
DISPOSING OF A REAR SHOCK
ABSORBER AND GAS CYLINDER
Gas pressure must be released before dispos-
ing of a rear shock absorber and gas cylinder. To
release the gas pressure, drill a 2
3 mm (0.08

0.12 in) hole through the gas cylinder at a
point 15
20 mm (0.59
0.79 in) from its end
as shown.
Wear eye protection to prevent eye damage
from released gas or metal chips.
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4-67
REAR SHOCK ABSORBER ASSEMBLYCHAS
WARNING
NOTE:
NOTE:
NOTE:
EAS00690
REMOVING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Stand the motorcycle on a level surface.
Becurely support the motorcycle so that
there is no danger of it falling over.
Place the motorcycle on a suitable stand so that
the rear wheel is elevated.
2. Remove:

bottom cowling
Refer to “COWLINGS” in chapter 3.

servo motor
Refer to “EXHAUST PIPE” in chapter 5.
3. Remove:

rear shock absorber assembly lower bolt
1

relay arm-to-swingarm bolt 2
While removing the rear shock absorber as-
sembly lower bolt, hold the swingarm so that it
does not drop down.
4. Remove:

rear shock absorber assembly upper bolt
1

rear shock absorber assembly
Raise the swingarm and then remove the rear
shock absorber assembly from between the
swingarm.
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4-68
REAR SHOCK ABSORBER ASSEMBLYCHAS
NOTE:
44 Nm (4.4 m
kg, 32 ft
lb)
44 Nm (4.4 m
kg, 32 ft
lb)
44 Nm (4.4 m
kg, 32 ft
lb)
EAS00695
CHECKING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Check:

rear shock absorber rod
Bends / damage
Replace the rear shock
absorber assembly.

rear shock absorber
Gas leaks / oil leaks
Replace the rear
shock absorber assembly.

spring
Damage / wear
Replace the rear shock ab-
sorber assembly.

bushings
Damage / wear
Replace.

dust seals
Damage / wear
Replace.

bolts
Bends / damage / wear
Replace.
EAS00698
INSTALLING THE REAR SHOCK
ABSORBER ASSEMBLY
1. Lubricate:

spacers

bearings
Recommended lubricant
Lithium – soap-based grease
2. Install:

rear shock absorber assembly

When installing the rear shock absorber as-
sembly, lift up the swingarm.

Install the connecting arm front bolt from the
right.
3. Tighten:

rear shock absorber assembly upper nut

rear shock absorber assembly lower nut

relay arm-to swingarm nut
4. Install :

EXUP servo motor
Refer to “EXHAUST PIPE” in chapter 5.

bottom cowling
Refer to “COWLINGS” in chapter 3.
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