1999 YAMAHA YZF-R7 oil level

3 - 55
CHK
ADJ
EB305020
ELECTRICAL SYSTEM
CHECKING AND CHARGING THE BATTERY
WARNINGWARNING
Batteries generate explosive hydrogen
gas and contain electrolyte which is
made of poisonous and highly caustic
sulfuric acid.
Therefore, always follow these preven-
tive measures:
• Wear protective eye gear when han-
dling or working near batteries.
• Charge batteries in a well-ventilated
area.
• Keep batteries away from fire, sparks
or open flames (e.g., welding equip-
ment, lighted cigarettes).
• DO NOT SMOKE when charging or
handling batteries.
• KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
• Avoid bodily contact with electrolyte
as it can cause severe burns or perma-
nent eye injury.
FIRST AID IN CASE OF BODILY CON-
TACT:
EXTERNAL
• Skin – Wash with water.
• Eyes – Flush with water for 15 minutes
and get immediate medical attention.
INTERNAL
• Drink large quantities of water or milk
followed with milk of magnesia,
beaten egg or vegetable oil. Get
immediate medical attention.
ACHTUNG:CAUTION:
• This is a sealed battery. Never remove
the sealing caps because the balance
between cells will not be maintained
and battery performance will deterio-
rate.
• Charging time, charging amperage
and charging voltage for an MF bat-
tery are different from those of con-
ventional batteries. The MF battery
should be charged as explained in the
charging method illustrations. If the
battery is overcharged, the electrolyte
level will drop considerably. There-
fore, take special care when charging
the battery.
CHECKING AND CHARGING THE BATTERY

ENG

4 - 5
ENGINE
Order Job/Part Q’ty Remarks
3 Crankcase breather hose 1
4 Ignition coil 4
5 Camshaft sensor 1
6 Starter motor lead 1 Disconnect.
7 Ground lead 1 Disconnect.
8 Starter motor 1
9 Pickup coil coupler 1 Disconnect.
10 Plastic clip 1
11 Stator coil assembly coupler 1 Disconnect.
12 Sidestand switch coupler 1
13 Oil level switch connector 1 Disconnect.
14 Neutral switch 1
For connecting, reverse the disconnec-
tion procedure.

ENG
4 - 50
OIL PAN AND OIL PUMP
EB411000
OIL PAN AND OIL PUMP
Order Job/Part Q’ty Remarks
Removing the oil pan and oil pumpRemove the parts in the order listed.
Engine oil Drain.
Refer to “CHANGING THE ENGINE
OIL” in chapter 3.
Coolant Drain.
Refer to “CHANGING THE COOLANT”
in chapter 3.
Radiator assembly and water pump
outlet pipeRefer to “RADIATOR AND THERMO-
STAT” and “OIL COOLER” in chapter 5.
Exhaust pipe assembly Refer to “ENGINE”.
1 Oil level switch connector 1 Disconnect.
2 Oil level switch 1
3 Oil level switch lead holder 1
4 Oil pan 1
5 Oil pan gasket 1
6 Dowel pin 2

4 - 53
ENGOIL PAN AND OIL PUMP
EB411100
REMOVING THE OIL PAN
1. Remove:
• oil level switch 1
• oil pan 2
• oil pan gasket
• dowel pins
NOTE:
Loosen each bolt 1/4 of a turn at a time,
in stages and in a crisscross pattern.
After all of the bolts are fully loosened,
remove them.
REMOVING THE OIL PUMP
1. Remove:
• oil/water pump assembly driven
sprocket
Flywheel puller
90890-01080
EB411400
CHECKING THE OIL PUMP
1. Check:
• oil/water pump assembly driven
sprocket 1
• oil pump housing 2
Cracks/damage/wear ® Replace the
defective part(-s).
2. Measure:
• inner rotor-to-outer rotor tip clearance
a
• outer rotor-to-oil pump housing clear-
ance b
Out of specification ® Replace the oil
pump.
1 Inner rotor
2 Outer rotor
3 Oil pump housing
Inner rotor-to-outer rotor tip
clearance
0.09 ~ 0.15 mm
(0.004 ~ 0.006 in)
Outer rotor-to-oil pump hous-
ing clearance
0.03 ~ 0.08 mm
(0.001 ~ 0.003 in)

4 - 55
ENGOIL PAN AND OIL PUMP
2. Check:
• oil pump operation
Refer to “CHECKING THE OIL PUMP”.
EB411710
INSTALLING THE OIL PUMP
1. Install:
• oil pump 1
NOTE:
Install the oil/water pump assembly
drive chain onto the oil/water pump
assembly driven sprocket.
T R..12 Nm (1.2 m · kg, 8.7 ft · lb)
EB411720
INSTALLING THE OIL STRAINER
1. Install:
• oil strainer 1
NOTE:
The arrow a on the oil strainer housing
must point towards the front of the
engine.
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
EB411730
INSTALLING THE OIL PAN
1. Install:
• dowel pins
• oil pan gasket
• oil pan 1
• oil level switch 2
• engine oil drain bolt 3
WARNINGWARNING
Always use new copper washers.
NOTE:
• Tighten the oil pan bolts in stages and
in a crisscross pattern.
• Lubricate the oil level switch O-ring
with lithium soap base grease.
New
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
T R..43 Nm (4.3 m · kg, 31 ft · lb)

5 - 12
COOLWATER PUMP
EB503000
WATER PUMP
Order Job/Part Q’ty Remarks
Removing the impeller shaftRemove the parts in the order listed.
Oil/water pump assembly and oil
pump rotorRefer to “OIL PAN AND OIL PUMP” in
chapter 4.
1 Water pump cover 1
2 O-ring 1
3 Pin 2
4 Impeller shaft (along with the impel-
ler)1
NOTE:
• The water pump and oil pump are
combined into one unit (oil/water
pump assembly).
• It is not necessary to remove the
impeller shaft unless the coolant
level is extremely low or coolant
leaks from the oil pan.

7 - 12
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EB701100
REMOVING THE REAR WHEEL
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.
2. Remove:
• brake caliper
NOTE:
Do not depress the brake pedal when
removing the brake caliper.
3. Remove:
• wheel axle nut
• washer
• wheel axle
• rear wheel
NOTE:
Push the rear wheel forward and
remove the drive chain from the rear
wheel sprocket.
EB701400
CHECKING THE REAR WHEEL
1. Check:
• wheel axle
• rear wheel
• wheel bearings
• oil seals
• brake disc
Refer to “FRONT WHEEL”.
2. Check:
• tire
• rear wheel
Damage/wear ® Replace.
Refer to “CHECKING THE TIRES” and
“CHECKING THE WHEELS” in chapter 3.

7 - 30
CHAS
4. Fill:
• brake fluid reservoir
(with the specified amount of the rec-
ommended brake fluid)
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.
5. Bleed:
• brake system
Refer to “BLEEDING THE HYDRAULIC
BRAKE SYSTEM” in chapter 3.
Recommended brake fluid
DOT 4
6. Check:
• brake fluid level
Below the minimum level mark a ®
Add the recommended brake fluid to
the proper level.
Refer to “CHECKING THE BRAKE
FLUID LEVEL” in chapter 3.
7. Check:
• brake lever operation
Soft or spongy feeling ® Bleed the
brake system.
Refer to “BLEEDING THE HYDRAULIC
BRAKE SYSTEM” in chapter 3.
FRONT AND REAR BRAKES