Yamaha RX10K Supplementary Service Manual page 291

VALVES AND VALVE SPRINGS
4. Remove:
S Valve retainer 1
S Valve spring 2
S Stem seal 3
S Valve spring seat 4
S Valve 5
NOTE:
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
INSPECTION
1. Measure:
S Valve-stem-to-valve-guide clearance
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter
Valve stem diameter
Out of specification ! Replace the valve
guide.
2. Replace:
S Valve guide
NOTE:
To ease valve guide removal and installation,
and to maintain the correct fit, hart the cylinder
head to 100 _C in an oven.
5-24
ENG
Valve spring compressor
90890-04019, YM-04019
Valve spring compressor
attachment
Intake valve
90890-04114, YM-4114
Exhaust valve
90890-04108, YM-4108
B
Valve-stem-to-valve-guide
clearance:
Intake
0.010 X 0.037 mm
(0.0004 X 0.0015 in)
Exhaust
0.025 X 0.052 mm
(0.0010 X 0.0020 in)
–
A