Honda CB250N Shop Manual page 64

Cylinder Head/Cylinder/Psston
NOTE
Do
not
damage the gasket surface.
•
Do
not
let
any gasket
material,
dirt
or
dust
fall
into
the crankcase.
Requisite Service
•
Cylinder
head removal/installation (page 7-1-0)
Procedure Q'ty
Remarks
Removal
Order Installation
is in
the reverse order
of
removal.
(
1
i
Cam
chain guide
1
i^#y
111
lUtM
1
(3)
Gasket
1
(4)
Dowel
pin
2
(51
Piston pin
clip
4
(6)
Piston pin
2
(7)
Piston
assembly 2
NOTE
At
installation, install
the piston with the
"IN" mark
fac-
ing
towards the intake
side.
Piston
Ring
Removal
OrdeT
Installation
is
in
the reverse order
of
removal.
(8)
Top
ring
2-
-
NOTE
*
Usb
tare
when removing
or installing
the
rings.
- insert
the outside surface of the
ring into
the proper
ring
groove and
roll
the ring
around
the groove
to
make
sure
that the
ring
has a free
fit
around the
piston's
circumference.
(9)
Second
ring
2-
(10)
Side
rail
4-
(11)
Spacer
2-
(12)
Piston 2
7-13-