Yamaha Star XVS950A 2009 Service Manual page 218

Valve-stem-to-valve-guide clear-
ance (intake)
0.010–0.037
0.0015 in)
Limit
0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clear-
ance (exhaust)
0.025–0.052
0.0020 in)
Limit
0.100 mm (0.0039 in)
2. Replace:
• Valve guide
TIP
To ease valve guide removal and installation,
and to maintain the correct fit, heat the cylinder
head to 100 °C (212 °F) in an oven.
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a. Remove the valve guide with the valve
guide remover "1".
mm (0.0004–
mm (0.0010–
5-27
VALVES AND VALVE SPRINGS
b. Install the new valve guide with the valve
guide installer "2" and valve guide remover
"1".
Valve guide position
12.7–13.1 mm (0.500–0.515 in)
a. Valve guide position
c. After installing the valve guide, bore the
valve guide with the valve guide reamer "3"
to obtain the proper valve-stem-to-valve-
guide clearance.
TIP
After replacing the valve guide, reface the
valve seat.