1999 YAMAHA YZF-R7 recommended oil

3 - 54
CHK
ADJ
EB304200
CHECKING AND LUBRICATING THE
CABLES
The following procedure applies to all of
the cable sheaths and cables.
WARNINGWARNING
Damaged cable sheaths may cause the
cable to corrode and interfere with its
movement. Replace damaged cable
sheaths and cables as soon as possible.
1. Check:
• cable sheath
Damage ® Replace.
2. Check:
• cable operation
Rough movement ® Lubricate.
NOTE:
Hold the cable end upright and pour a
few drops of lubricant into the cable
sheath or use a suitable lubing device.
EB304210
LUBRICATING THE LEVERS AND PEDALS
Lubricate the pivoting point and metal-to-
metal moving parts of the levers and ped-
als.
EB304220
LUBRICATING THE SIDESTAND
Lubricate the pivoting point and metal-to-
metal moving parts of the sidestand.
EB304240
LUBRICATING THE REAR SUSPENSION
Lubricate the pivoting point and metal-to-
metal moving parts of the rear suspension.
Recommended lubricant
Engine oil or a suitable cable
lubricant
Recommended lubricant
Lithium soap base grease
Recommended lubricant
Lithium soap base grease
Recommended lubricant
Molybdenum disulfide grease
CHECKING AND LUBRICATING THE CABLES/
LUBRICATING THE LEVERS AND PEDALS/LUBRICATING THE
SIDESTAND/LUBRICATING THE REAR SUSPENSION

4 - 30
ENGVALVES AND VALVE SPRINGS
EB403702
INSTALLING THE VALVES
The following procedure applies to all of
the valves and related components.
1. Deburr:
• valve stem end
(with an oil stone)
2. Lubricate:
• valve stem 1
• oil seal 2
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
3. Install:
• oil seal 1
• valve 2
• lower spring seat 3
• valve springs 4
• upper spring seat 5
(into the cylinder head)
NOTE:
• Make sure that each valve is installed
in its original place.
• Install the valve spring with the larger
pitch a facing up.
b Smaller pitch
New
aa
b
ba

4 - 31
ENG

VALVES AND VALVE SPRINGS
4. Install:
• valve cotters
1
NOTE:

Install the valve cotters by compressing
the valve spring with the valve spring
compressor
2
and attachment
3
.
5. To secure the valve cotters
1
onto the
valve stem, lightly tap the valve tip with
a soft-face hammer.
ACHTUNG:CAUTION:

Hitting the valve tip with excessive
force could damage the valve.
Valve spring compressor
90890-04019
Attachment
(for the intake valve spring)
9080-04114
(for the exhaust valve spring)
90890-04108
6. Lubricate:
• valve pad
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
7. Install:
• valve pad
• valve lifter
NOTE:

• The valve lifter must move smoothly
when rotated with a finger.
• Each valve lifter and valve pad must be
reinstalled in its original position.

4 - 47
ENGCLUTCH
4. Bend the lock washer tab along a flat
side of the nut.
5. Lubricate:
• friction plates
• clutch plates
(with the recommended lubricant)
Recommended lubricant
Engine oil
6. Install:
• friction plates 1 - 3.00 mm (0.12 in)
• clutch plates 2
• friction plate 3 - 3.85 mm (0.15 in)
NOTE:
First, install a friction plate and then
alternate between a clutch plate and a
friction plate.
13
2

4 - 54
ENGOIL PAN AND OIL PUMP
3. Check:
• oil pump operation
Unsmooth ® Repair or replace the
defective part(-s).
Refer to “WATER PUMP” in chapter 5.
EB411410
CHECKING THE RELIEF VALVE
1. Check:
• relief valve body 1
• relief valve 2
• spring 3
• O-ring 4
Damage/wear ® Replace the defective
part(-s).
EB411421
CHECKING THE OIL DELIVERY PIPE AND
OIL PIPE
1. Check:
• oil delivery pipe 1
• oil pipe 2
Damage ® Replace.
Obstruction ® Wash and blow out
with compressed air.
EB411430
CHECKING THE OIL STRAINER
1. Check:
• oil strainer 1
Damage ® Replace.
Contaminants ® Clean with engine oil.
EB411701
ASSEMBLING THE OIL PUMP
1. Lubricate:
• inner rotor
• outer rotor
• impeller shaft
(with the recommended lubricant)
Recommended lubricant
Engine oil

4 - 61
ENG

CRANKCASE
EB412743
ASSEMBLING THE CRANKCASE
1. Lubricate:
• crankshaft journal bearings
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Apply:
• sealant
(onto the crankcase mating surfaces)
NOTE:

Do not allow any sealant to come into
contact with the oil gallery or crankshaft
journal bearings. Do not apply sealant to
within 2 ~ 3 mm (0.08 ~ 0.12 in) of the
crankshaft journal bearings.
3. Install:
• dowel pins
1

Yamaha bond No. 1215
90890-85505
4. Install:
• crankshaft journal lower bearings
(into the lower crankcase)
NOTE:

• Align the projections
a
on the crank-
shaft journal lower bearings with the
notches
b
in the lower crankcase.
• Install each crankshaft journal lower
bearing in its original place.
5. Set the shift drum assembly and trans-
mission gears in the neutral position.

4 - 71
ENGCONNECTING RODS AND PISTONS
2. Install:
• piston 1
(onto the respective connecting rod 2)
• piston pin 3
• piston pin clip 4
NOTE:
• Apply engine oil onto the piston pin.
• Make sure that the “Y” mark a on the
connecting rod faces left when the
arrow mark b on the piston is pointing
up. Refer to the illustration.
• Reinstall each piston into its original
cylinder (numbering order starting
from the left: #1 to #4).
Piston head
New
3. Offset:
• piston ring end gaps
aTop ring
bLower oil ring rail
cUpper oil ring rail
d2nd ring
Intake side
4. Lubricate:
• piston
• piston rings
• cylinder
(with the recommended lubricant)
5. Lubricate:
• bolt threads
• nut seats
(with the recommended lubricant)
ACHTUNG:CAUTION:
MOLYKOTEâ “G-n” paste is a special
grease, which should not be applied to
any part other than those specified.
Recommended lubricant
Engine oil
Recommended lubricant
MOLYKOTE® G-n paste

4 - 72
ENGCONNECTING RODS AND PISTONS
NOTE:
Apply only a thin even layer of
MOLYKOTE‚ “G-n” paste, otherwise the
correct tightening torque cannot be
achieved.
6. Lubricate:
• crankshaft pins
• big end bearings
• connecting rod big end inner surface
(with the recommended lubricant)
Recommended lubricant
Engine oil
7. Install:
• big end bearings
• connecting rod assembly
(into the cylinder and onto the crank-
shaft pin)
• connecting rod cap
(onto the connecting rod)
NOTE:
• Align the projections on the big end
bearings with the notches in the con-
necting rods and connecting rod caps.
• Be sure to reinstall each big end bear-
ing in its original place.
• While compressing the piston rings
with piston ring compressor 1, install
the connecting rod assembly into the
cylinder with the other hand.
• Make sure that the “Y” marks a on the
connecting rods face towards the left
side of the crankshaft.
• Make sure that the characters b on
both the connecting rod and connect-
ing rod cap are aligned.
8. Align:
• bolt heads
(with the connecting rods)
Piston ring compressor:
90890-05158
1