1999 YAMAHA YZF-R7 engine

3 - 24
CHK
ADJ
CHANGING THE ENGINE OIL
EB303081
CHANGING THE ENGINE OIL
1. Remove:
• bottom cowling
• front cowling
Refer to “COWLINGS”.
2. Start the engine, warm it up for several
minutes, and then turn it off.
3. Place a container under the engine oil
drain bolt.
4. Remove:
• engine oil filler cap 1
• engine oil drain bolt 2
(along with the washer)
5. Drain:
• engine oil
(completely from the crankcase)
1
1

6. If the oil filter cartridge is also to be
replaced, perform the following proce-
dure.
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. Remove the oil filter cartridge 1 with
an oil filter wrench 2.
Oil filter wrench
90890-01426
b. Lubricate the O-ring 3 of the new oil
filter cartridge with a thin coat of
engine oil.
ACHTUNG:CAUTION:
Make sure that the O-ring 3 is posi-
tioned correctly in the groove of the oil
filter cartridge.
c. Tighten the new oil filter cartridge to
specification with an oil filter wrench.
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
7. Check:
• engine oil drain bolt washer
Damage ® Replace.
8. Install:
• engine oil drain bolt
T R..
Oil filter cartridge
17 Nm (1.7 m • kg, 12 ft • lb)
T R..43 Nm (4.3 m · kg, 31 ft • lb)

3 - 25
CHK
ADJ
CHANGING THE ENGINE OIL
9. Fill:
• crankcase
(with the specified amount of the rec-
ommended engine oil)
10.Install:
• engine oil filler cap
11.Start the engine, warm it up for several
minutes, and then turn it off.
12.Check:
• engine
(for engine oil leaks)
13.Check:
• engine oil level
Refer to “CHECKING THE ENGINE OIL
LEVEL”.
Quantity
Total amount
3.6 L (3.2 lmp qt, 3.8 US qt)
Without oil filter cartridge
replacement
2.6 L (2.3 lmp qt, 2.7 US qt)
With oil filter cartridge
replacement
2.8 L (2.5 lmp qt, 3.0 US qt)
14.Check:
• engine oil pressure
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. Slightly loosen the oil gallery bolt 1.
b. Start the engine and keep it idling
until engine oil starts to seep from the
oil gallery bolt. If no engine oil comes
out after one minute, turn the engine
off so that it will not seize.
c. Check the engine oil passages, the oil
filter cartridge and the oil pump for
damage or leakage. Refer to “OIL
PAN AND OIL PUMP” in chapter 4.
d. Start the engine after solving the
problem(-s) and check the engine oil
pressure again.
e. Tighten the oil gallery bolt to
specification.
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..
Oil gallery bolt
20 Nm (2.0 m • kg, 14 ft • lb)
1
1

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 - 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 - 31
CHK
ADJ
CHECKING THE COOLANT LEVEL
EB303220
CHECKING THE COOLANT 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. Remove:
• bottom cowling
• front cowling
Refer to “COWLINGS”.
3. Check:
• coolant level
The coolant level should be between
the minimum level mark a and maxi-
mum level mark b.
Below the minimum level mark ® Add
the recommended coolant to the
proper level.
ACHTUNG:CAUTION:
• Adding water instead of coolant lowers
the antifreeze content of the coolant. If
water is used instead of coolant, check
and if necessary, correct the antifreeze
concentration of the coolant.
• Use only distilled water. However,
soft water may be used if distilled
water is not available.
4. Start the engine, warm it up for several
minutes, and then turn it off.
5. Check:
• coolant level
NOTE:
Before checking the coolant level, wait a
few minutes until the coolant has set-
tled.
aa b
b

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 - 35
CHK
ADJ
CHANGING THE COOLANT
ACHTUNG:CAUTION:
• Adding water instead of coolant low-
ers the antifreeze content of the cool-
ant. If water is used instead of coolant,
check, and if necessary, correct the
antifreeze concentration of the cool-
ant.
• Use only distilled water. However,
soft water may be used if distilled
water is not available.
• If coolant comes into contact with
painted surfaces, immediately wash
them with water.
• Do not mix different types of anti-
freeze.
11.Install:
• radiator cap
12.Fill:
• coolant reservoir
(with the recommended coolant to the
maximum level mark a)
13.Install:
• coolant reservoir cap
14.Start the engine, warm it up for several
minutes, and then turn it off.
aa
15.Check:
• coolant level
Refer to “CHECKING THE COOLANT
LEVEL”.
NOTE:
Before checking the coolant level, wait a
few minutes until the coolant has set-
tled.
16.Install:
• front cowling
• bottom cowling
Refer to “COWLINGS”.