Honda CB250N Shop Manual page 59

Cylinder Head/Cylinder/Piston
Camshaft/Camshaft
Holder
Installation
Turn
the
crankshaft counterclockwise and
align the
"T"
mark on the flywheel with the index
mark on
the
left
crankcese cover.
1)
INDEX
MARK
(2)
"T"
MARK
Install
the
cam
sprocket with the timing
marks
(index
lines)
facing the
left
side.
Install
the
camshaft on
the cylinder
head through the
cam
chain
and
cam
sprocket.
Install
the
knock
pins of
the
camshaft bushings
into
the
grooves
in
the cylinder head.
_
,11
>
INDEX LINE
(2)
CAM
S p
R0CKET
(5)
KNOCK
PIN
(4)
CAM
CHAIN
(3)
CAMSHAFT
Align the timing marks
(index
lines)
on
the
cam
sprocket with
the top of the cylinder
head and
install
the
cam
chain over the
sprocket.
Install
the cam
sprocket on the
camshaft
flange
and
align the
cam
sprocket
bolt
holes
in
the sprocket and camshaft.
Apply
a
locking agent
to the
threads
of
one
cam
sprocket
bolt,
and
.
install
and
tighten the
sprocket
bolt.
Turn the crankshaft counterclockwise
360°. Apply
a locking
agent to the threads
of
the other
cam
sprocket
bolt. Install
the other
cam
sprocket
bolt
and
tighten
it
to the specified
torque.
Torque:
20
N-m
(2.0
kg-m,
1
4
ft-lb)
Turn the crankshaft counterclockwise
360°
and
tighten the
other
cam
sprocket
bolt to the specified torque,
Apply
a
molybdenum
oil
solution
(half
engine
oil.
and
half
molybdenum
disulfide grease) to the camshaft
lobes.
Install
the
dowel
pins into
the
cylinder
head.
Install
the
camshaft
holders
with
the
"F" mark toward
the
front.