Checking The Valves And Valve Guides - Yamaha XJR1300 2007 Service Manual

so that it can be reinstalled in its original place.
1
EAS24290
CHECKING THE VALVES AND VALVE
GUIDES
The following procedure applies to all of the
valves and valve guides.
1. Measure:
Valve-stem-to-valve-guide clearance
G
Out of specification → Replace the valve
spring.
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter "a" -
Valve stem diameter "b"
Valve-stem-to-valve-guide
ance
Valve-stem-to-valve-guide clear-
ance (intake)
0.010–0.037 mm (0.0004–0.0015
in)
Limit
0.080 mm (0.0032 in)
Valve-stem-to-valve-guide clear-
ance (exhaust)
0.025–0.052 mm (0.0010–0.0020
in)
Limit
0.100 mm (0.0039 in)
2
4
3
clear-
VALVES AND VALVE SPRINGS
5
2. Replace:
Valve guide
G
NOTE:
To ease valve guide removal and installation,
and to maintain the correct fit, heat the cylinder
head to 100°C in an oven.
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Remove the valve guide with the valve guide
remover "1".
b. Install the new valve guide with the valve
guide installer "2" and valve guide remover
"1".
5-18
b
a
1