S.1
ENGINE
BODY
68
mm
STROKE SERIES
WSM,
01
161
SERVlCl NG
[I]
CYLINDER
HEAD
AND
VALVES
0109F067
I
0109F097
I
RC-AA
(2)
(1)
Detergent
(3)
White Developer
(2)
Red Permeative Liquid
Cylinder Head Surface Flatness
1.
Thoroughly clean the cylinder head surface.
2.
Place a straightedge on the cylinder head's four
3.
Measure the clearance
with
a feeler gauge.
4.
If
the measurement exceeds the allowable limit,
I
NOTE
0
Do
not place
the
straightedge on the combustion
chamber.
W
IMPORTANT
0
Be sure
to
check the valve recessing after
correcting.
sides and two diagonal as shown
in
the
figure.
correct
it
with
a surface grinder.
0.05
rnrn
I
Allowable limit
I
0.0020
in
surface flatness
Cylinder head
I
Finishing
I
I
;iR
e4
unit:
pm
(pin.)
Cylinder Head Flaw
1.
Prepare an air spray red check (Code No.
07909-
2.
Clean the surface of the cylinder head
with
3.
Spray the cylinder head surface with the red
4.
Wash away the red permeative liquid on the
5.
Spray the cylinder head surface
with
white
31371).
detergent
(1).
permeative liquid
(2).
Leave
it
five to ten minutes after spraying.
cylinder head surface
with
the
detergent
(2).
developer
(3).
If
flawed,
it
can be identified as red marks.
5-83
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