Honda Hawk GT NT650 1988 Service Manual page 108

Remove the dowel pins.
Hang the cam chain on the camshaft behind the camshaft
flange and remove the cam sprocket while lifting the camshaft
out.
Attach a piece of wire to the cam chain to prevent it from
being dropped into the crankcase.
INSPECTION
Cylinder head
Inspect the camshaft holder and cylinder head journal surfaces
for scoring or evidence of insufficient lubrication.
Camshaft runout
Support both ends of the camshaft with V-blocks and check
the camshaft runout with a dial indicator.
SERVICE LIMIT: 0.05 mm (0.002 in)
Using a micrometer, measure the height of each cam lobe.
SERVICE LIMIT:
IN: 38.17 mm (1.503 in)
EX: 38.19 mm (1.504 in)
Check the camshaft journals for wear or damage.
Measure the 0.0. of each journal.
SERVICE LIMIT: 21.95 mm (0.864 in)
CYLINDER HEADIVALVES
(3) CAM
HEIGHT
9-5