Honda NC700XA Service Manual page 327

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CYLINDER HEAD/VALVES
Check the cylinder head for warpage with a straight
edge and feeler gauge.
SERVICE LIMIT: 0.10 mm (0.004 in)
VALVE SPRING
Measure the free length of the valve spring.
SERVICE LIMIT: 48.1 mm (1.89 in)
Replace the springs if they are shorter than the service
limits.
VALVE/VALVE GUIDE
Check that the valve moves smoothly in the guide.
Inspect each valve for bending, burning or abnormal
stem wear.
Measure and record each valve stem O.D.
SERVICE LIMITS:
IN: 4.965 mm (0.1955 in)
EX: 4.955 mm (0.1951 in)
Ream the guides to remove any carbon deposits before
checking clearances.
Insert the reamer [1] from the combustion chamber side
of the cylinder head and always rotate the reamer
clockwise.
TOOL:
Valve guide reamer, 5.010 mm
10-20
[1]
07984-MA60001