Honda 2003 NPS50 Ruckus Service Manual page 146

CYLINDER HEAD/VALVES
Install the rocker a rms and side springs as shown.
Coat a new D-ring with oil.
Install the intake Apply engine oil to the sliding surfaces of the rocker
shaft with the cut- arm shafts and install it with a new 0-ring to the cyl­
out facing outside. inder head.
Apply oil to the camshaft bearings.
Apply molybdenum oil solution to the cam lobes.
Install the camshaft with the cam lobe facing the
cylinder side while pressing down the valve side of
the rocker arms.
Apply engine oil to the cylinder head bolt threads
and seating surfaces.
Install the stopper plate onto the cylinder head as
shown.
Install the bolts and tighten them in a crisscross pat­
tern in two or three steps to the specified torque.
TORQUE: 12 N·m (1.2 kgf·m, 9 lbf·ftl
If the cylinder head is removed, tighten the outside
cylinder head bolts.
Turn the drive pulley (crankshaft) counterclockwise
and align the "T" mark on the flywheel with the
index mark on the crankcase while holding the cam
chain.
Make sure the cam lobe faces the cylinder side (TDC
on the compression stroke).
Install the cam sprocket onto the cam chain, align­
ing the index line on the cam sprocket with the
index mark on the stopper plate.
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