9-1
9. CYLINDER HEAD / VALVES
SERVICE INFORMATION
GENERAL SAFETY
●
The rocker arm and the camshaft can be serviced without removing the engine. However, the engine must be removed
from the frame to maintain the cylinder head.
●
The oil of camshaft oil is supplied through the cylinder head oil hole. Clean the oil hole prior to assembling the cylinder
head.
SPECIFICATIONS
9
SERVICE INFORMATION
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9-1
TROUBLESHOOTING
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9-2
CAMSHAFT
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9-3
CYLINDER HEAD
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9-5
VALVE SPRINGS
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9-6
VALVES
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9-6
VALVE GUIDES
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9-7
VALVE SEATS
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9-8
CYLINDER HEAD ASSEMBLY
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9-11
CAMSHAFT ASSEMBLY
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9-13
TORQUE VALUES
CAM CHAIN TENSIONER PIVOT BOLT
1.0 kgf
·
m
SPARK PLUG
1.2 kgf
·
m
CAMSHAFT HOLDER 8mm NUT
2.0 kgf
·
m
CAM CHAIN TENSIONER MOUNTING BOLT
1.2 kgf
·
m
CAM CHAIN TENSIONER SEALING SCREW
0.4 kgf
·
m
CYLINDER HEAD COVER BOLT
0.9 kgf
·
m
CYLINDER HEAD BOLT
1.1 kgf
·
m
TAPPET ADJUST NUT
0.8 kgf
·
m
ITEM
STANDARD VALUE
SERVICE LIMIT
Unit : mm
ROCKER ARM
CAM HEIGHT
VALVE STEM OUTER DIAMETER
CLEARANCE BETWEEN
STEM AND GUIDE
CAMSHAFT
VALVE
VALVE GUIDE
ROCKER ARM INNER DIAMETER
12.016 - 12.034
39.05
ROCKER ARM SHAFT OUTER DIAMETER
11.982 - 12.000
11.950
IN
33.835 - 33.995
33.625
EX
33.984 - 34.144
33.765
CAMSHAFT OUTER DIAMETER
15.005 - 15.018
15.040
VALVE SPRING FREE LENGTH
IN,EX
37.21
36.90
IN
4.972 - 4.984
4.920
EX
4.952 - 4.964
4.900
VALVE GUIDE INNER DIAMETER
IN,EX
5.000 - 5.012
5.030
IN
0.016 - 0.040
0.090
EX
0.036 - 0.060
0.120
VALVE SEAT WIDTH
0.8 - 1.0
1.4
CYLINDER HEAD WARPAGE
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Summary of Contents for S2 125
Page 1: ......
Page 3: ......
Page 21: ...MEMO...
Page 49: ...MEMO...
Page 59: ...MEMO...
Page 63: ...7 0 LH CRANKCASECOVER CONTINUOUSLYVARIABLE TRANSMISSION LH CRANKCASE COVER...
Page 77: ...8 0 A C GENERATOR STARTER CLUTCH FLYWHEEL STATOR COMP RH SHROUD COOLING FAN...
Page 86: ...MEMO...
Page 103: ...10 0 CYLINDER PISTON CYLINDER CYLINDER GASKET PISTON TOP RING SECOND RING OIL RING...
Page 110: ...MEMO...
Page 111: ...11 0 TRANSMISSION CRANKSHAFT CRANKCASE RH CRANKCASE LH CRANKCASE CRANKSHAFT...
Page 122: ...MEMO...
Page 144: ...MEMO...
Page 145: ...13 0 REAR WHEEL BRAKE SUSPENSION REAR SWING ARM...
Page 154: ...MEMO...
Page 168: ...MEMO...
Page 177: ...MEMO...
Page 183: ...SERVICEMANUAL 2004 11 PRINTED 2004 11 PUBLICATION NO COPY...