2004 YAMAHA YZF-R1S ad blue

2-8
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Connecting rods
Crankshaft-pin-to-big-end-bearing
clearance
Bearing color code
0.034  0.058 mm (0.0013  0.0023 in)
1 = Blue 2 = Black 3 = Brown 4 = Green0.09 mm
(0.0035 in)




Crankshaft
Width A
Width B
Max. runout C
Big end side clearance D
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
Bearing color code
55.20  56.60 mm (2.17  2.23 in)
298.8  300.7 mm (11.76  11.84 in)




0.160  0.262 mm (0.0063  0.0103 in)
0.014  0.037 mm (0.0006  0.0015 in)
0 = White 1 = Blue 2 = Black
3 = Brown 4 = Green







0.03 mm
(0.0012 in)




0.10 mm
(0.0039 in)




ProCarManuals.com

5-15
CAMSHAFTENG
NOTE:
6. Remove:

intake camshaft
1

exhaust camshaft 2
To prevent the timing chain from falling into the
crankcase, fasten it with a wire
3.
7. Remove:

camshaft sprockets
EAS00204
CHECKING THE CAMSHAFTS
1. Check:

camshaft lobes
Blue discoloration / pitting / scratches
Re-
place the camshaft.
2. Measure:

camshaft lobe dimensions
a and b
Out of specification
Replace the cam-
shaft.
Camshaft lobe dimension limit
Intake camshaft
a 32.85
32.95 mm
(1.293
1.297 in)
: 32.75 mm (1.289 in)
b 25.14
25.24 mm
(0.990
0.994 in)
: 25.04 mm (0.986 in)
Exhaust camshaft
a 30.75
30.85 mm
(1.211
1.215 in)
: 30.65 mm (1.207 in)
b 23.09
23.19 mm
(0.909
0.913 in)
: 22.99 mm (0.905 in)
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5-30
VALVES AND VALVE SPRINGSENG
NOTE:
NOTE:
EAS00240
CHECKING THE VALVE SEATS
The following procedure applies to all of the
valves and valve seats.
1. Eliminate:

carbon deposits
(from the valve face and valve seat)
2. Check:

valve seat
Pitting / wear
Replace the cylinder head.
3. Measure:

valve seat width
a
Out of specification
Replace the cylinder
head.
Valve seat width
Intake: 0.9
1.1 mm
Intake: (0.0354
0.0433 in)
Exhaust: 0.9
1.1 mm
Exhaust: (0.0354
0.0433 in)
: 1.6 mm (0.06 in)
a. Apply Mechanic’s blueing dye (Dykem)
1
onto the valve face.
b. Install the valve into the cylinder head.
c. Press the valve through the valve guide and
onto the valve seat to make a clear impres-
sion.
d. Measure the valve seat width.
Where the valve seat and valve face contacted
one another, the blueing will have been re-
moved.
4. Lap:

valve face

valve seat
After replacing the cylinder head or replacing
the valve and valve guide, the valve seat and
valve face should be lapped.
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5-31
VALVES AND VALVE SPRINGSENG
CAUTION:
NOTE:
a. Apply a coarse lapping compound a to the
valve face.
Do not let the lapping compound enter the
gap between the valve stem and the valve
guide.
b. Apply molybdenum disulfide oil onto the
valve stem.
c. Install the valve into the cylinder head.
d. Turn the valve until the valve face and valve
seat are evenly polished, then clean off all of
the lapping compound.
For the best lapping results, lightly tap the valve
seat while rotating the valve back and forth be-
tween your hands.
e. Apply a fine lapping compound to the valve
face and repeat the above steps.
f. After every lapping procedure, be sure to
clean off all of the lapping compound from
the valve face and valve seat.
g. Apply Mechanic’s blueing dye (Dykem) onto
the valve face.
h. Install the valve into the cylinder head.
i. Press the valve through the valve guide and
onto the valve seat to make a clear impres-
sion.
j. Measure the valve seat width
a again. If the
valve seat width is out of specification, reface
and lap the valve seat.
EAS00241
CHECKING THE VALVE SPRINGS
The following procedure applies to all of the
valve springs.
1. Measure:

valve spring free length
a
Out of specification
Replace the valve
spring.
Valve spring free length
Intake valve spring
39.3 mm (1.55 in)
: 37.3 mm (1.47 in)
Exhaust valve spring
39.3 mm (1.55 in)
: 37.3 mm (1.47 in)
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5-81
CONNECTING RODS AND PISTONSENG
NOTE:
NOTE:
Piston ring side clearance
Top ring
0.030
0.065 mm
(0.0012
0.0026 in)
: 0.115 mm (0.0045 in)
2nd ring
0.020
0.055 mm
(0.0008
0.002 in)
: 0.115 mm (0.0045 in)
2. Install:

piston ring
(into the cylinder)
Level the piston ring into the cylinder with the
piston crown.
a5 mm (0.20 in)
3. Measure:

piston ring end gap
Out of specification
Replace the piston
ring.
The oil ring expander spacer’s end gap cannot
be measured. If the oil ring rail’s gap is exces-
sive, replace all three piston rings.
Piston ring end gap
Top ring
0.15
0.25 mm
(0.0059
0.0098 in)
: 0.50 mm (0.0197 in)
2nd ring
0.30
0.45 mm
(0.0118
0.0177 in)
: 0.80 mm (0.0315 in)
Oil ring
0.10
0.40 mm
(0.0039
0.0158 in)
CHECKING THE PISTON PINS
The following procedure applies to all of the pis-
ton pins.
1. Check:

piston pin
Blue discoloration / grooves
Replace the
piston pin and then check the lubrication sys-
tem.
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5-86
CONNECTING RODS AND PISTONSENG
NOTE:
r. Measure the compressed Plastigauge
width on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select re-
placement big end bearings.
2. Select:

big end bearings (P1
P4)

The numbers
A stamped into the crankshaft
web and the numbers
1 on the connecting
rods are used to determine the replacement
big end bearing sizes.

“P1”
“P4” refer to the bearings shown in the
crankshaft illustration.
For example, if the connecting rod “P
1” and the
crankshaft web “P
1” numbers are “5” and “2” re-
spectively, then the bearing size for “P1” is:
“P
1” (connecting rod) – “P1”
(crankshaft) =
5 – 2 = 3 (brown)
BIG END BEARING COLOR CODE
1Blue
2Black
3Brown
4Green
INSTALLING THE CONNECTING ROD AND
PISTON
The following procedure applies to all of the
connecting rods and pistons.
1. Install:

top ring
1

2nd ring 2

upper oil ring rail 3

oil ring expander 4

lower oil ring rail 5
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5-95
CRANKSHAFTENG
NOTE:
NOTE:
* Following the tightening order, loosen the bolt
one by one and then retighten it to the specific
torque.
Lubricate the crankcase bolt threads with en-
gine oil.
Refer to “CRANKCASE”.
g. Remove the lower crankcase and the crank-
shaft journal lower bearings.
h. Measure the compressed Plastigauge

width c on each crankshaft journal.
If the crankshaft-journal-to-crankshaft-jour-
nal-bearing clearance is out of specification,
select replacement crankshaft journal bear-
ings.
2. Select:

crankshaft journal bearings (J1
J5)

The numbers
A stamped into the crankshaft
web and the numbers
1 stamped into the low-
er crankcase are used to determine the re-
placement crankshaft journal bearing sizes.

“J1
J5” refer to the bearings shown in the
crankshaft illustration.

If “J1
J5” are the same, use the same size
for all of the bearings.

If the size is the same for all “J
1 to J5” one digit
for that size is indicated. (Crankcase side only)
For example, if the crankcase “J
1” and crank-
shaft web “J
1” numbers are “6” and “2” respec-
tively, then the bearing size for “J1” is:
“J
1” (crankcase) – “J1”
(crankshaft web) – 1 =
6 – 2 – 1 = 3 (brown)
CRANKSHAFT JOURNAL BEARING
COLOR CODE
0White
1Blue
2Black
3Brown
4Green
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5-105
TRANSMISSIONENG
NOTE:
12 Nm (1.2 m
kg, 8.7 ft
lb)
10 Nm (1.0 m
kg, 7.2 ft
lb)
NOTE: 2. Measure:

drive axle runout
(with a centering device and dial gauge
1)
Out of specification
Replace the drive
axle.
Drive axle runout limit
0.08 mm (0.0032 in)
3. Check:

transmission gears
Blue discoloration / pitting / wear
Replace
the defective gear(s).

transmission gear dogs
Cracks / damage / rounded edges
Replace
the defective gear(s).
INSTALLING THE TRANSMISSION
1. Install:

bearing
1
Make the seal side of bearing face to the outside
and install it close to the right end face of the
crankcase.

oil pipe
2
2. Install:

main axle assembly
1

bearing housing 2
LOCTITE

shift fork “C”

shift drum assembly

shift fork guide bar

shift fork guide bar retainer
LOCTITE

The embossed marks on the shift forks should
face towards the right side of the engine and
be in the following sequence: “R”, “C”, “L”.

Carefully position the shift forks so that they
are installed correctly into the transmission
gears.

Install shift fork “C” into the groove in the 3rd
and 4th pinion gear on the main axle.
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