1999 YAMAHA YZF-R7 warning

3 - 40
CHK
ADJ
BLEEDING THE HYDRAULIC BRAKE SYSTEM
1. Bleed:
• hydraulic brake system
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a. Fill the brake fluid reservoir to the
proper level with the recommended
brake fluid.
b. Install the brake fluid reservoir dia-
phragm.
c. Connect a clear plastic hose 1 tightly
to the bleed screw 2.
Front brake
õRear brake
d. Place the other end of the hose into a
container.
e. Slowly apply the brake several times.
f. Fully squeeze the brake lever or fully
depress the brake pedal and hold it in
position.
g. Loosen the bleed screw.
NOTE:
Loosening the bleed screw will release
the pressure and cause the brake lever
to contact the throttle grip or the brake
pedal to fully extend.
h. Tighten the bleed screw and then
release the brake lever or brake
pedal.
i. Repeat steps (e) to (h) until all of the
air bubbles have disappeared from
the brake fluid in the plastic hose.
j. Tighten the bleed screw to specifica-
tion.
k. Fill the brake fluid reservoir to the
proper level with the recommended
brake fluid.
Refer to “CHECKING THE BRAKE
FLUID LEVEL”.
WARNINGWARNING
After bleeding the hydraulic brake sys-
tem, check the brake operation.
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T R..
Bleed screw
6 Nm (0.6 m • kg, 4.3 ft • lb)

õ

3 - 41
CHK
ADJADJUSTING THE SHIFT PEDAL/
ADJUSTING THE DRIVE CHAIN SLACK
EB304081
ADJUSTING THE SHIFT PEDAL
NOTE:
The shift pedal position is determined
by the installed shift rod length a.
1. Measure:
• installed shift rod length a
Incorrect ® Adjust.
2. Adjust:
• installed shift rod length a
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a. Loosen both locknuts 1.
b. Turn the shift rod 2 in direction b or
c to obtain the correct shift pedal
position.
c. Tighten both locknuts.
d. Make sure that the installed shift rod
length is within specification.
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Installed shift rod length
294 mm (11.57 in)
Direction bInstalled shift rod length
decreases.
Direction cInstalled shift rod length
increases.
1
1
1
1
a a
b bc
c
EB304092
ADJUSTING THE DRIVE CHAIN SLACK
NOTE:
The drive chain slack must be checked at
the tightest point on the chain.
ACHTUNG:CAUTION:
A drive chain that is too tight will over-
load the engine and other vital parts,
and one that is too loose can skip and
damage the swingarm or cause an acci-
dent. Therefore, keep the drive chain
slack within the specified limits.
1. Stand the motorcycle on a level surface.
WARNINGWARNING
Securely support the motorcycle so that
there is no danger of it falling over.
NOTE:
Place the motorcycle on a suitable stand
so that the rear wheel is elevated.

3 - 43
CHK
ADJLUBRICATING THE DRIVE CHAIN/
CHECKING AND ADJUSTING THE STEERING HEAD
EB304100
LUBRICATING THE DRIVE CHAIN
The drive chain consists of many interact-
ing parts. If the drive chain is not main-
tained properly, it will wear out rapidly.
Therefore, the drive chain should be ser-
viced, especially when the motorcycle is
used in dusty areas. This motorcycle has a
drive chain with small rubber O-rings
between each side plate. Steam cleaning,
high-pressure washing, certain solvents,
and the use of a coarse brush can damage
these O-rings. Therefore, use only kerosine
to clean the drive chain. Wipe the drive
chain dry and thoroughly lubricate it with
engine oil or chain lubricant that is suitable
for O-ring chains. Do not use any other
lubricants on the drive chain since they may
contain solvents that could damage the O-
rings.
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
EB304130
CHECKING AND ADJUSTING THE
STEERING HEAD
1. Stand the motorcycle on a level surface.
WARNINGWARNING
Securely support the motorcycle so that
there is no danger of it falling over.
NOTE:
Place the motorcycle on a suitable stand
so that the front wheel is elevated.
2. Check:
• steering head
Grasp the bottom of the front fork legs
and gently rock the front fork.
Looseness/binding ® Adjust the steer-
ing head.

3 - 45
CHK
ADJ
CHECKING AND ADJUSTING THE STEERING HEAD
c. Loosen the lower ring nut completely,
then tighten it to specification.
WARNINGWARNING
Do not overtighten the lower ring nut.
d. Check the steering head for looseness
or binding by turning the front fork all
the way in both directions. If any
binding is felt, remove the lower
bracket and check the upper and
lower bearings.
Refer to “STEERING HEAD” in chap-
ter 7.
e. Install the rubber washer 3.
f. Install the upper ring nut 2.
g. Finger tighten the upper ring nut 2,
then align the slots of both ring nuts.
If necessary, hold the lower ring nut
and tighten the upper ring nut until
their slots are aligned.
h. Install the lock washer 1.
NOTE:
Make sure that the lock washer tabs a
sit correctly in the ring nut slots b.
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T R..
Lower ring nut (final tightening
torque)
9 Nm (0.9 m • kg, 6.5 ft • lb)
9. Install:
• steering stem nut
• upper bracket bolt
• handlebar pinch bolt
• upper bracket pinch bolt
10.Measure:
• steering head tension
(with the motorcycle still on the stand)
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NOTE:
Make sure that all of the cables and
wires are properly routed.
a. Point the front wheel straight ahead.
b. Install a plastic locking tie 1 loosely
around the end of the handlebar as
shown.
c. Hook a spring gauge 2 onto the plas-
tic locking tie.
T R..115 Nm (11.5 m · kg, 85 ft · lb)
T R..13 Nm (1.3 m · kg, 9.4 ft · lb)
T R..13 Nm (1.3 m · kg, 9.4 ft · lb)
T R..26 Nm (2.6 m · kg, 16 ft · lb)

3 - 46
CHK
ADJCHECKING AND ADJUSTING THE STEERING HEAD/
CHECKING THE FRONT FORK
d. Hold the spring gauge at a 45˚ angle
from the handlebar, pull the spring
gauge, and record the measurement
when the handlebar starts to turn.
e. Repeat the above procedure on the
opposite handlebar.
f. If the steering head tension is out of
specification (both handlebars should
be within specification), remove the
upper bracket and loosen or tighten
the upper ring nut.
g. Reinstall the upper bracket and mea-
sure the steering head tension again
as described above.
h. Repeat the above procedure until the
steering head tension is within speci-
fication.
i. Grasp the bottom of the front fork
legs and gently rock the front fork.
Looseness or binding ® Adjust the
steering head.
s s s s s s s s s s s s s s s s s s s s s s s s s s s
Steering head tension
200 ~ 500 g (7.06 ~ 17.65 oz)
EB304141
CHECKING THE FRONT FORK
1. Stand the motorcycle on a level surface.
WARNINGWARNING
Securely support the motorcycle so that
there is no danger of it falling over.
2. Check:
• inner tube 1
Damage/scratches ® Replace.
• dust seal 2
• oil seal
Oil leakage ® Replace.
3. Hold the motorcycle upright and apply
the front brake.
4. Check:
• front fork operation
Push down hard on the handlebars
several times and check if the front
fork rebounds smoothly.
Rough movement ® Repair.
Refer to “FRONT FORK” in chapter 7.

3 - 47
CHK
ADJ
ADJUSTING THE FRONT FORK LEGS
EB304153
ADJUSTING THE FRONT FORK LEGS
The following procedure applies to both of
the front fork legs.
WARNINGWARNING
• Always adjust both front fork legs
evenly. Uneven adjustment can result
in poor handling and loss of stability.
• Securely support the motorcycle so
that there is no danger of it falling
over.
Spring preload
ACHTUNG:CAUTION:
• Grooves are provided to indicate the
adjustment position.
• Never go beyond the maximum or
minimum adjustment positions.
1. Adjust:
• spring preload
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a. Turn the adjusting bolt 1 in direction
a or b.
NOTE:
With each turn of the adjusting bolt, the
installed length of the fork spring is
changed by 1 mm.
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Direction a
(turns in)Spring preload is
increased (suspension is
harder).
Direction b
(turns out)Spring preload is
decreased (suspension is
softer).
Adjusting positions
Minimum: 0 turns in direction*
Standard: 14 turns in direction*
Maximum: 18-1/2 turns in direction*
* after fully turning the adjusting
bolt in direction b
1
1

a a
b b

3 - 49
CHK
ADJ
EB304162
ADJUSTING THE REAR SHOCK
ABSORBER ASSEMBLY
WARNINGWARNING
Securely support the motorcycle so that
there is no danger of it falling over.
Spring preload
ACHTUNG:CAUTION:
Never go beyond the maximum or mini-
mum adjustment positions.
1. Adjust:
• spring preload
NOTE:
Adjust the spring preload with the spe-
cial wrench and extension bar included
in the owner’s tool kit.
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a. Turn the adjusting knob 1 in direc-
tion a or b.
s s s s s s s s s s s s s s s s s s s s s s s s s s s
Direction a
(turns in)Spring preload is
increased (suspension is
harder).
Direction b
(turns out)Spring preload is
decreased (suspension is
softer).
Adjusting positions
Minimum: 0 turns in*
Standard: 6 turns in *
Maximum: 20 turns in *
* from the fully turned-out position
1
1
a a
b b
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY

3 - 51
CHK
ADJ
CHECKING THE TIRES
EB304170
CHECKING THE TIRES
The following procedure applies to both of
the tires.
1. Measure:
• tire pressure
Out of specification ® Regulate.
WARNINGWARNING
• The tire pressure should only be
checked and regulated when the tire
temperature equals the ambient air
temperature.
• The tire pressure and the suspension
must be adjusted according to the
total weight (including cargo, rider,
passenger and accessories) and the
anticipated riding speed.
• Operation of an overloaded motorcy-
cle could cause tire damage, an acci-
dent or an injury.
NEVER OVERLOAD THE MOTORCYCLE.
* total of cargo, rider and accessories
WARNINGWARNING
It is dangerous to ride with a worn-out
tire. When the tire tread reaches the
wear limit, replace the tire immediately.Basic weight
(with oil
and a full
fuel tank)207 kg (456 lb)
Maximum
load*317 kg (699 lb)
Cold tire
pressureFront Rear
Up to 90 kg
(198 lb)
load*250 kPa
(2.5 kgf/cm
2,
36 psi)250 kPa
(2.5 kgf/cm2,
36 psi)
90 kg (198 lb)
~ maximum
load*250 kPa
(2.5 kgf/cm
2,
36 psi)290 kPa
(2.9 kgf/cm2,
41 psi)
High-speed
riding250 kPa
(2.5 kgf/cm
2,
36 psi)250 kPa
(2.5 kgf/cm2,
36 psi)