engine YAMAHA YZF-R1SC 2004 User Guide

1-5
FEATURES
GEN
INFO
NOTE:
NOTE: To set the shift timing indicator light activation function
The shift timing indicator light activation function can be set between 7000 r/min and 15000 r/m. From
7000 r/min to 12000 r/min, the indicator light can be set in increments of 500 r/min. From 12000 r/min to
15000 r/min, the indicator light can be set in increments of 200 r/min.
1. Push the “RESET” button to select the desired engine speed for activating the indicator light.
2. Push the “SELECT” button to confirm the selected engine speed. The control mode changes to the
shift timing indicator light deactivation function.
To set the shift timing indicator light deactivation function

The shift timing indicator light activation function can be set between 7000 r/min and 15000 r/min.
From 7000 r/min to 12000 r/min, the indicator light can be set in increments of 500 r/min. From 12000
r/min to 15000 r/min, the indicator light can be set in increments of 200 r/min.

Be sure to set the deactivation function to a higher engine speed than for the activation function,
otherwise the shift timing indicator light will remain deactivated.
1. Push the “RESET” button to select the desired engine speed for deactivating the indicator light.
2. Push the “SELECT” button to confirm the selected engine speed. The control mode changes to the
shift timing indicator light brightness function.
To adjust the shift timing indicator light brightness
1. Push the “RESET” button to select the desired indicator light brightness level.
2. Push the “SELECT” button to confirm the selected indicator light brightness level. The right display
will return to the odometer or tripmeter mode
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1-6
springlip
oil
grease lip
IMPORTANT INFORMATION
GEN
INFO
EAS00020
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1. Before removal and disassembly, eliminate
all dirt, mud, dust and foreign material.
2. Use only the proper tools and cleaning
equipment.
Refer to the “SPECIAL TOOLS”.
3. When disassembling, always keep mated
parts together. This includes gears, cylin-
ders, pistons and other parts that have been
“mated” through normal wear. Mated parts
must always be reused or replaced as an as-
sembly.
4. During disassembly, clean all of the parts
and place them in trays in the order of disas-
sembly. This will speed up assembly and al-
low for the correct installation of all parts.
5. Keep all parts away from any source of fire.
EAS00021
REPLACEMENT PARTS
Use only genuine Yamaha parts for all replace-
ments. Use oil and grease recommended by
Yamaha for all lubrication jobs. Other brands
may be similar in function and appearance, but
inferior in quality.
EAS00022
GASKETS, OIL SEALS AND O-RINGS
1. When overhauling the engine, replace all
gaskets, seals and O-rings. All gasket sur-
faces, oil seal lips and O-rings must be
cleaned.
2. During reassembly, properly oil all mating
parts and bearings and lubricate the oil seal
lips with grease.
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1-10
SPECIAL TOOLS
GEN
INFO
Tool No.Tool name / FunctionIllustration
90890-01441
YM-01441
Fork spring compressor
This tool is used to disassemble or
assemble the front fork legs.
90890-01442
YM-01442
Fork seal driver
This tool is used to install the front fork’s oil
seal and dust seal.
90890-03094
YU-08030
Vacuum gauge
This guide is used to synchronize the car-
buretors.
Compression
gauge
90890-03081
YU-33223
Adapter
90890-04136Compression gauge
Compression gauge adapter
These tools are used to measure engine
compression.
Valve spring compressor
90890-04019
YM-04019
Attachment
90890-04108
YM-01253
90890-04114
YM-4114Valve spring compressor
Valve spring compressor attachment
These tools are used to remove or install
the valve assemblies.
Middle driven shaft
bearing driver
90890-04058
YM-4058
Mechanical seal
installer
90890-04078
YM-33221Middle driven shaft bearing driver
Mechanical seal installer
These tools are used to install the water
pump seal.
90890-04086
YM-91042
Clutch holding tool
This tool is used to hold the clutch boss
when removing or installing the clutch boss
nut.
90890-04111
90890-04116
YM-4116
Valve guide remover
This tool is used to remove or install the
valve guides.
90890-04112
90890-04117
YM-4117
Valve guide installer
This tool is used to install the valve guides.
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1-11
SPECIAL TOOLS
GEN
INFO
Tool No.Tool name / FunctionIllustration
90890-04113
YM-04113
90890-04118
YM-4118Valve guide reamer
This tool is used to rebore the new valve
guides.
90890-06754
YM-34487
Ignition checker
This tool is used to check the ignition sys-
tem components.
90890-85505
ACC-1109-0501
Yamaha bond No. 1215
This bond is used to seal two mating sur-
faces (e.g., crankcase mating surfaces).
90890-03174
Digital circuit tester
This tool is used to check the electrical sys-
tem.
Pivot shaft wrench
90890-01471
YM-01471
Pivot shaft wrench
adapter
90890-01476Pivot shaft wrench
Pivot shaft wrench adapter
This tool is need to loosen or tighten the
spacer bolt.
90890-03132
YU-3112
Pocket tester
This instrument is needed for checking the
engine oil temperature.
Oil pressure
gauge
90890-03153
YU-03153
Adapter
90890-03139Oil pressure gauge
Adapter
These tools are used to measure engine oil
pressure.
90890-06756
Vacuum/pressure pump gauge set
This tool used to measure the vacuum pres-
sure.
90793-80009
Engine tachometer
This tool is needed for observing engine
rpm.
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2-2
ENGINE SPECIFICATIONSSPEC
2
ENGINE SPECIFICATIONS
ItemStandardLimit
Engine
Engine type
Displacement
Cylinder arrangement
Bore
stroke
Compression ratio
Engine idling speed
Vacuum pressure at engine idling
speed
Standard compression pressure
(at sea level)
Liquid-cooled, 4-stroke, DOHC
998 cm3 (60.90 cu.in)
Forward-inclined parallel 4-cylinder
77.0
53.6 mm (3.03
2.11 in)
12.4 : 1
1,150  1,250 r / min
22 kPa (165 mmHg, 6.5 inHg)
1,480 kPa (14.80 kg / cm
2,14.80 bar,
210.5 psi) at 350 r / min
































Fuel
Recommended fuel
Fuel tank capacity
Total (including reserve)
Reserve only
Premium unleaded gasoline only
18 L (3.96 Imp gal, 4.76 US gal)
3.4 L (0.75 Imp gal, 0.90 US gal)











Engine oil
Lubrication system
Recommended oil
Quantity
Total amount
Without oil filter cartridge
replacement
With oil filter cartridge replacement
Oil pressure
Engine oil temperature
Relief valve opening pressure
Wet sump
At 5C (40F) or higher
Yamalube 4 (20W40) or SAE 20W40
type SE motor oil
At 15C (60F) or lower
Yamalube 4 (10W30) or SAE 10W30
type SE motor oil
3.8 L (3.35 Imp qt, 4.02 US qt)
2.9 L (2.55 Imp qt, 3.07 US qt)
3.1 L (2.73 Imp qt, 3.28 US qt)
230 kPa at 5,000 r / min
(2.3 kg / cm
2 at 5,000 r / min)
(2.3 bar at 5,000 r / min)
(32.7 psi at 5,000 r / min)
100C (212F)
600  680 kPa (6.0  6.8 kg / cm
2,
6.0  6.8 bar, 87.0  98.6 psi)
























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2-3
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Oil filter
Oil filter type
Bypass valve opening pressure
Paper
80  120 kPa (0.8  1.2 kg / cm2,
0.8  1.2 bar, 11.6  17.4 psi)








Oil pump
Oil pump type
Inner-rotor-to-outer-rotor-tip
clearance
Outer-rotor-to-oil-pump-housing
clearance
Trochoid
0.01  0.10 mm
(0.0004  0.0039 in)
0.09  0.15 mm
(0.00035  0.0059 in)



0.18 mm
(0.0071 in)
0.22 mm
(0.0087 in)
Cooling system
Radiator capacity
Radiator cap opening pressure
Radiator core
Width
Height
Depth
Coolant reservoir
Capacity
Water pump
Water pump type
Reduction ratio
Max. impeller shaft tilt
2.51 L (2.21 Imp qt, 2.65 US qt)
108  137 kPa (1.08  1.37 kg / cm2,
1.0  1.3 bar, 15.6  19.9 psi)
380 mm (14.96 in)
258 mm (10.2 in)
24 mm (0.94 in)
0.25 L (0.22 Imp qt, 0.26 US qt)
Single suction centrifugal pump
65 / 43
25 / 32 (1.181)































0.15 mm
(0.006 in)
Starting system typeElectric starter
Spark plugs
Model (manufacturer)
quantity
Spark plug gap
CR9EK (NGK)
4
0.6  0.7 mm (0.0236  0.0276 in)







Cylinder head
Volume
Max. warpage
12.5  13.1 cm3 (0.76  0.80 cu.in)







0.10 mm
(0.0039 in)
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2-4
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Camshafts
Drive system
Camshaft cap inside diameter
Camshaft journal diameter
Camshaft-journal-to-camshaft-
cap clearance
Intake camshaft lobe dimensions
Measurement A
Measurement B
Exhaust camshaft lobe dimensions
Measurement A
Measurement B
Max. camshaft runout
Chain drive (right)
22.500  22.521 mm (0.8858  0.8867 in)
22.459  22.472 mm (0.8842  0.8847 in)
0.028  0.062 mm (0.0011  0.0024 in)
32.85  32.95 mm (1.293  1.297 in)
25.14  25.24 mm (0.990  0.994 in)
30.75  30.85 mm (1.211  1.215 in)
23.09  23.19 mm (0.909  0.913 in)















32.75 mm
(1.289 in)
25.04 mm
(0.986 in)
30.65 mm
(1.207 in)
22.99 mm
(0.905 in)
0.03 mm
(0.0012 in)
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2-5
ENGINE SPECIFICATIONSSPEC
Head Diameter Face Width Seat Width Margin Thickness
ItemStandardLimit
Timing chain
Model / number of links
Tensioning system
RH2020 / 122
Automatic







Valves, valve seats, valve guides
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
0.11  0.20 mm (0.0043  0.0079 in)
0.21  0.25 mm (0.0083  0.0098 in)







Valve head diameter A
Intake
Exhaust
Valve face width B
Intake
Exhaust
Valve seat width C
Intake
Exhaust
Valve margin thickness D
Intake
Exhaust
Valve stem diameter
Intake
Exhaust
Valve guide inside diameter
Intake
Exhaust
Valve-stem-to-valve-guide clearance
Intake
Exhaust
Valve stem runout
Valve seat width
Intake
Exhaust
23.4  23.6 mm (0.9213  0.9291 in)
24.9  25.1 mm (0.9803  0.9882 in)
1.76  2.90 mm (0.0693  0.1142 in)
1.76  2.90 mm (0.0693  0.1142 in)
0.9  1.1 mm (0.0354  0.0433 in)
0.9  1.1 mm (0.0354  0.0433 in)
0.5  0.9 mm (0.0197  0.0354 in)
0.5  0.9 mm (0.0197  0.0354 in)
3.975  3.990 mm (0.1565  0.1571 in)
4.460  4.475 mm (0.1756  0.1762 in)
4.000  4.012 mm (0.1575  0.1580 in)
4.500  4.512 mm (0.1772  0.1776 in)
0.010  0.037 mm (0.0004  0.0015 in)
0.025  0.052 mm (0.0010  0.0020 in)




0.9  1.1 mm (0.0354  0.0433 in)
0.9  1.1 mm (0.0354  0.0433 in)















1.6 mm (0.06 in)
1.6 mm (0.06 in)
0.5 mm (0.02 in)
0.5 mm (0.02 in)
3.945 mm
(0.1553 in)
4.425 mm
(0.1742 in)
4.050 mm
(0.1594 in)
4.550 mm
(0.1791 in)
0.08 mm
(0.0032 in)
0.10 mm
(0.0039 in)
0.01 mm
(0.0004 in)
1.6 mm (0.06 in)
1.6 mm (0.06 in)
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2-6
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Valve springs
Free length
Intake
Exhaust
Installed length (valve closed)
Intake
Exhaust
Compressed spring force
(installed)
Intake
Exhaust
Spring tilt
Intake
Exhaust
Winding direction (top view)
Intake
Exhaust
39.3 mm (1.55 in)
39.3 mm (1.55 in)
32.7 mm (1.29 in)
32.8 mm (1.29 in)
145.9  167.9 N (14.88  17.12 kg,
32.80  37.74 lb)
164.1  188.9 N (16.73  19.26 kg,
36.89  42.46 lb)








Clockwise
Clockwise37.3 mm (1.47 in)
37.3 mm (1.47 in)
















2.5/ 1.7 mm
(0.07 in)
2.5/ 1.7 mm
(0.07 in)








Cylinders
Cylinder arrangement
Bore
stroke
Compression ratio
Bore
Max. out-of-round
Forward-inclined, parallel 4-cylinder
77.0 mm
53.6 mm (3.03
2.11 in)
12.4 : 1
77.00  77.01 mm (3.0315  3.0319 in)



















0.005 mm
(0.0002 in)
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2-7
ENGINE SPECIFICATIONSSPEC
ItemStandardLimit
Piston
Piston-to-cylinder clearance
Diameter D
Height H
Piston pin bore (in the piston)
Diameter
Offset
Offset direction
Piston pins
Outside diameter
Piston-pin-to-piston-pin-bore
clearance
Piston rings
Top ring
Ring type
Dimensions (B
T)
End gap (installed)
Ring side clearance
2nd ring
Ring type
Dimensions (B
T)
End gap (installed)
Ring side clearance
Oil ring
Dimensions (B
T)
End gap (installed)
0.010  0.035 mm (0.0004  0.0014 in)
76.975  76.990 mm (3.0305  3.0311 in)
5 mm (0.20 in)
17.002  17.013 mm
(0.6694  0.6698 in)
0.5 mm (0.0197 in)
Intake side
16.991  17.000 mm
(0.6689  0.6693 in)
0.002  0.022 mm (0.0001  0.0009 in)
Barrel
0.90
2.75 mm (0.04
0.11 in)
0.15  0.25 mm (0.0059  0.0098 in)
0.030  0.065 mm (0.0012  0.0026 in)
Taper
0.80
2.75 mm (0.03
0.11 in)
0.30  0.45 mm (0.0118  0.0177 in)
0.020  0.055 mm (0.0008  0.0022 in)
1.50
2.25 mm (0.06
0.09 in)
0.10  0.40 mm (0.0039  0.0158 in)0.120 mm
(0.0047 in)








17.043 mm
(0.6710 in)








16.971 mm
(0.6682 in)
0.072 mm
(0.0028 in)








0.50 mm
(0.0197 in)
0.115 mm
(0.0045 in)








0.80 mm
(0.0315 in)
0.115 mm
(0.0045 in)








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