4-24
ENG
VALVES AND VALVE SPRINGS
2. Remove:
9
valve cotters
1
NOTE:
Remove the valve cotters by compressing the
valve spring with the valve spring compressor
2
.
3. Remove:
9
upper spring seat
1
9
valve spring
2
9
valve stem seal
3
9
lower spring seat
4
9
valve
5
NOTE:
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
EAS00239
CHECKING THE VALVES AND VALVE
GUIDES
The following procedure applies to all of the
valves and valve guides.
1. Measure:
9
valve-stem-to-valve-guide clearance
Out of specification
→
Replace the valve
guide.
Valve spring compressor
90890-04019
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter
a
a
–
Valve stem diameter
b
b
Valve-stem-to-valve-guide clear-
ance
Intake
0.010 – 0.037 mm
(0.0004 – 0.0015 in)
<Limit>: 0.08 mm (0.0032 in)
Exhaust
0.025 – 0.052 mm
(0.0010 – 0.0020 in)
<Limit>: 0.10 mm (0.0039 in)
3S3-F8197-E0_4_1 05.11.18 13:15 Page 24
Summary of Contents for Sirius T110LSE
Page 1: ...T110LE T110LSE SERVICE MANUAL 3S3 F8197 E0 ...
Page 2: ......
Page 6: ......
Page 8: ......
Page 10: ......
Page 12: ...GEN INFO ...
Page 22: ...SPEC ...
Page 99: ...ENG ...
Page 179: ...ENG 4 80 ...
Page 181: ...CARB ...
Page 261: ...ELEC ...
Page 265: ...ELEC CHECKING SWITCH CONTINUITY 7 4 ...
Page 301: ...TRBL SHTG ...
Page 303: ...TRBL SHTG TROUBLESHOOTING 8 2 COMPRESSION SYSTEM ...
Page 305: ...TRBL SHTG ...
Page 306: ......
Page 307: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...