1999 YAMAHA YZF-R7 warning

3 - 26
CHK
ADJCHANGING THE ENGINE OIL/
CHECKING THE CLUTCH FLUID LEVEL
15.Install:
• front cowling
• bottom cowling
Refer to “COWLINGS”.
EB303100
CHECKING THE CLUTCH FLUID LEVEL
1. Stand the motorcycle on a level surface.
NOTE:
• Place the motorcycle on a suitable
stand.
• Make sure that the motorcycle is
upright.
2. Check:
• clutch fluid level
Below the minimum level mark a ®
Add the recommended clutch fluid to
the proper level.
WARNINGWARNING
• Use only the designated clutch fluid.
Other fluids may cause the rubber
seals to deteriorate, causing leakage
and poor clutch performance.
• Refill with the same type of fluid. Mix-
ing fluids may result in a harmful
chemical reaction leading to poor
clutch performance.
• When refilling, be careful that water
does not enter the clutch fluid reser-
voir. Water will significantly lower the
boiling point of the fluid and could
cause vapor lock.
ACHTUNG:CAUTION:
Clutch fluid may damage painted sur-
faces and plastic parts. Always clean up
any split fluid immediately.
NOTE:
In order to ensure a correct reading of
the clutch fluid level, make sure that the
top of the clutch fluid reservoir is hori-
zontal.
Recommended clutch fluid
Brake fluid DOT 4aa

3 - 27
CHK
ADJ
BLEEDING THE HYDRAULIC CLUTCH
SYSTEM
WARNINGWARNING
Bleed the hydraulic clutch system
whenever:
• the clutch system was disassembled,
• a clutch hose was loosened, discon-
nected or replaced,
• the clutch fluid level is very low,
• clutch operation is faulty.
NOTE:
• Be careful not to spill any clutch fluid
or allow the clutch fluid reservoir to
overflow.
• When bleeding the hydraulic clutch
system, make sure that there is always
enough clutch fluid before applying
the clutch. Ignoring this precaution
could allow air to enter the hydraulic
clutch system, considerably lengthen-
ing the bleeding procedure.
• If bleeding is difficult, it may be neces-
sary to let the clutch fluid settle for a
few hours. Repeat the bleeding proce-
dure when the tiny bubbles in the hose
have disappeared.
1. Bleed:
• hydraulic clutch system
t t t t t t t t t t t t t t t t t t t t t t t t t t t
a. Fill the clutch fluid reservoir to the
proper level with the recommended
clutch fluid.
b. Install the clutch fluid reservoir dia-
phragm.
c. Connect a clear plastic hose 1 tightly
to the bleed screw 2.
d. Place the other end of the hose into a
container.
e. Slowly apply the clutch several times.
f. Fully squeeze the clutch lever and
hold it in position.
g. Loosen the bleed screw.
NOTE:
Loosening the bleed screw will release
the pressure and cause the clutch lever
to contact the grip.
h. Tighten the bleed screw and then
release the clutch lever.
i. Repeat steps (e) to (h) until all of the
air bubbles have disappeared from
the clutch fluid in the plastic hose.
2
2
1
1

BLEEDING THE HYDRAULIC CLUTCH SYSTEM

3 - 28
CHK
ADJBLEEDING THE HYDRAULIC CLUTCH SYSTEM/
CLEANING THE AIR FILTER ELEMENT
j. Tighten the bleed screw to specifica-
tion.
k. Fill the clutch fluid reservoir to the
proper level with the recommended
clutch fluid.
Refer to “CHECKING THE CLUTCH
FLUID LEVEL”.
WARNINGWARNING
After bleeding the hydraulic clutch sys-
tem, check the clutch operation.
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
T R..
Bleed screw
6 Nm (0.6 m • kg, 4.3 ft • lb)
EB303130
CLEANING THE AIR FILTER ELEMENT
1. Remove:
• fuel tank
• air filter case cover
• air filter element
Refer to “FUEL TANK AND AIR FIL-
TER”.
2. Clean:
• air filter element
Apply compressed air to the outer sur-
face of the air filter element.
3. Check:
• air filter element
Damage ® Replace.
4. Install:
• air filter element
• air filter case cover
ACHTUNG:CAUTION:
Never operate the engine without the
air filter element installed. Unfiltered air
will cause rapid wear of engine parts
and may damage the engine. Operating
the engine without the air filter element
will also affect the electronic fuel injec-
tion, leading to poor engine perfor-
mance and possible overheating.
5. Install:
• fuel tank
Refer to “FUEL TANK AND AIR FIL-
TER”.

3 - 33
CHK
ADJ
CHANGING THE COOLANT
EB303240
CHANGING THE COOLANT
1. Remove:
• bottom cowling
• front cowling
Refer to “COWLINGS”.
2. Remove:
• coolant reservoir bolts 1
• coolant reservoir cap 2
NOTE:
When draining the coolant from the
coolant reservoir, be sure to tilt the res-
ervoir so that coolant cannot flow
through the coolant reservoir breather
hose 3.
3. Drain:
• coolant
(from the coolant reservoir)
4. Install:
• coolant reservoir bolts
2
2

1

1

5. Remove:
• radiator cap 1
WARNINGWARNING
A hot radiator is under pressure. There-
fore, do not remove the radiator cap
when the engine is hot. Scalding hot
fluid and steam may be blown out,
which could cause serious injury. When
the engine has cooled, open the radiator
cap as follows:
Place a thick rag or a towel over the
radiator cap and slowly turn the radia-
tor cap counterclockwise toward the
detent to allow any residual pressure to
escape. When the hissing sound has
stopped, turn the radiator cap counter-
clockwise while pressing down on it
and then remove it.
1
1

6. Remove:
• coolant drain bolt 1
(along with the copper washer)
7. Drain:
• coolant

3 - 34
CHK
ADJ
CHANGING THE COOLANT
8. Check:
• copper washer 1
• coolant drain bolt 2
Damage ® Replace.
9. Install:
• coolant drain bolt
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)
10.Fill:
• cooling system
(with the specified amount of the rec-
ommended coolant)
Recommended antifreeze
High-quality ethylene glycol
antifreeze containing corro-
sion inhibitors for aluminum
engines
Mixing ratio
1:1 (antifreeze: water)
Quantity
Total amount
2.75 L
(2.42 lmp qt, 2.91 US qt)
Coolant reservoir capacity
0.25 L
(0.22 lmp qt, 0.26 US qt)
Handling notes for coolant
Coolant is potentially harmful and should
be handled with special care.
WARNINGWARNING
• If coolant splashes in your eyes, thor-
oughly wash them with water and
consult a doctor.
• If coolant splashes on your clothes,
quickly wash it away with water and
then with soap and water.
• If coolant is swallowed, induce vomit-
ing and get immediate medical atten-
tion.

3 - 36
CHK
ADJ
ADJUSTING THE REAR BRAKE
EB304001
CHASSIS
EB304010
ADJUSTING THE REAR BRAKE
1. Measure:
• brake pedal position
(distance a from the top of the brake
pedal to the bottom of the rider foot-
rest bracket)
Out of specification ® Adjust.
Brake pedal position (from the
top of the brake pedal to the
center of the rider footrest
bracket bolt)
31 ~ 36 mm (1.22 ~ 1.42 in)
a a
2. Adjust:
• brake pedal position
t t t t t t t t t t t t t t t t t t t t t t t t t t t
a. Loosen the locknut 1.
b. Turn the adjusting bolt 2 in direction
a or b until the specified brake pedal
position is obtained.
WARNINGWARNING
After adjusting the brake pedal position,
check that the end of the adjusting bolt
c is visible through the hole d.
c. Tighten the locknut 1 to specifica-
tion.
WARNINGWARNING
A soft or spongy feeling in the brake
pedal can indicate the presence of air in
the brake system. Before the vehicle is
operated, the air must be removed by
bleeding the brake system. Air in the
brake system will considerably reduce
braking performance and could result in
loss of control and possibly an accident.
Therefore, check and, if necessary,
bleed the brake system.Direction aBrake pedal is raised.
Direction bBrake pedal is lowered.
T R..
Locknut
16 Nm (1.6 m • kg, 11 ft • lb)

3 - 37
CHK
ADJADJUSTING THE REAR BRAKE/
CHECKING THE BRAKE FLUID LEVEL
ACHTUNG:CAUTION:
After adjusting the brake pedal position,
make sure that there is no brake drag.
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
3. Adjust:
• rear brake light switch
Refer to “ADJUSTING THE REAR
BRAKE LIGHT SWITCH”.
EB304020
CHECKING THE BRAKE FLUID LEVEL
1. Stand the motorcycle on a level surface.
NOTE:
• Place the motorcycle on a suitable
stand.
• Make sure that the motorcycle is
upright.
2. Check:
• brake fluid level
Below the minimum level mark a ®
Add the recommended brake fluid to
the proper level.
Front brake
õRear brake
WARNINGWARNING
• Use only the designated brake fluid.
Other brake fluids may cause the rub-
ber seals to deteriorate, causing leak-
age and poor brake performance.
• Refill with the same type of brake fluid
that is already in the system. Mixing
brake fluids may result in a harmful
chemical reaction, leading to poor
brake performance.
• When refilling, be careful that water
does not enter the brake fluid reser-
voir. Water will significantly lower the
boiling point of the brake fluid and
could cause vapor lock.
ACHTUNG:CAUTION:
Brake fluid may damage painted sur-
faces and plastic parts. Therefore,
always clean up any spilt brake fluid
immediately.
NOTE:
In order to ensure a correct reading of the
brake fluid level, make sure that the top of
the brake fluid reservoir is horizontal.
Recommended brake fluid
DOT 4

õ

3 - 39
CHK
ADJCHECKING THE BRAKE HOSES/
BLEEDING THE HYDRAULIC BRAKE SYSTEM
EB304062
CHECKING THE BRAKE HOSES
The following procedure applies to all of
the brake hoses and brake hose clamps.
1. Check:
• brake hose 1
Cracks/damage/wear ® Replace.
2. Check:
• brake hose clamp
Loose ® Tighten the clamp bolt.
3. Hold the motorcycle upright and apply
the brake several times.
4. Check:
• brake hose
Brake fluid leakage ® Replace the
damaged hose.
Refer to “FRONT AND REAR BRAKES”
in chapter 7.
EB304072
BLEEDING THE HYDRAULIC BRAKE
SYSTEM
WARNINGWARNING
Bleed the hydraulic brake system when-
ever:
• the brake system was disassembled,
• a brake hose was loosened, discon-
nected or replaced,
• the brake fluid level is very low,
• brake operation is faulty.
NOTE:
• Be careful not to spill any brake fluid or
allow the brake fluid reservoir to over-
flow.
• When bleeding the hydraulic brake
system, make sure that there is always
enough brake fluid before applying the
brake. Ignoring this precaution could
allow air to enter the hydraulic brake
system, considerably lengthening the
bleeding procedure.
• If bleeding is difficult, it may be neces-
sary to let the brake fluid settle for a
few hours. Repeat the bleeding proce-
dure when the tiny bubbles in the hose
have disappeared.