5.1
ENGINE
BODY
68
mm
STROKE
SERIES
WSM,
01
161
c
0
0-
0
Cylinder Head
1.
Loosen the pipe band, and remove the water
return pipe.
2.
Remove the cylinder head bolts
in
the order of
((ID,
@)to
(O),
and remove the cylinder head.
(When reassembling)
0
Replace the head gasket
with
a new one.
0
Install the cylinder head, using care not to damage.
the O-ring.
0
Tighten
the
cylinder head bolts and nuts gradually
in
the order of
(0)
to
(0,
@)
after applying
engine oil.
0
Retighten the cylinder head screws and nuts after
running the engine for
30
minutes.
,
4.0
to 4.5
kgf-m
28.9
to
32.5
ft-lbS
Tightening torque
[A]
Gear case side
[B]
Flywheel side
Tappets
1.
Remove the cylinder head gasket and O-ring.
2.
Remove the tappets from the crankcase.
(When reassembling)
0
Before installing the tappets, apply engine oil
H
NOTE
*
Mark the cylinder number
to
the tappets to
(1)
Tappet
thinly around them.
prevent interchanging.
B083P015
Valves
0109P611
1.
Remove the valve cap
(1).
2.
Remove the valve
spring
collet
(2)
with
a valve
3.
Remove
the
valve
spring
retainers
(3),
valve spring
H
IMPORTANT
0
Don’t change the combination
of
the valve and
valve guide.
(When reassembling)
0
Wash the valve stem and valve guide hole, and
apply engine
oil
sufficiently.
0
After installing the valve spring collets, lightly tap
the stem to assure proper
fit
with
a plastic
hammer.
lifter.
(4)
and valve
(5).
(1)
ValveCap (4) Vaive Spring
(2)
Valve Spring Collet
(3)
Valve Spring Retainer
(5) Valve
5-65
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