Honda NSS250S Manual page 317

Apply molybdenum oil solution to the camshaft
cam surface and sliding surfaces.
Install the camshaft while pressing the rocker arms
to the valve side.
Clean the cam stopper plate bolt threads, then apply
locking agent to the cam stopper plate bolt threads
(coating width 6.5 ± 1.0 mm (0.26 ± 0.04 in) from the
tip of exclude 2.0 – 3.0 mm (0.08 – 0.12 in)).
Install the stopper plate with its "OUT" mark facing
out and the stopper plate bolt to the cylinder head
as shown and tighten the bolt to the specified
torque.
TORQUE: 12 N·m (1.2 kgf·m, 9 lbf·ft)
Slide the rocker arms to the spring side and install
Be careful not to let
the shims in their original locations on the valve
the shims fall into
retainer.
the crankcase.
CAM SPROCKET INSTALLATION
Apply oil to the cam chain sprocket teeth and cam
chain whole surface.
Turn the drive face (crankshaft) counterclockwise
Carefully rotate the
and align the "T" mark on the compression stroke
crankshaft while
(page 9-6).
holding the cam
chain to avoid
Install the cam chain onto the cam sprocket so that
jamming the cam
the index lines on the cam sprocket is flush with the
chain against the
cylinder head surface.
timing sprocket of
Install the cam sprocket onto the camshaft.
the crankshaft.
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CYLINDER HEAD/VALVES
CAMSHAFT
BOLT
"OUT" MARK
ROCKER ARMS SHIMS
SIDE SPRINGS SHIMS
CAM SPROCKET
CAM LOBE
SURFACES
STOPPER PLATE
Align
Align
CAM CHAIN
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