S.l
ENGINE
BODY
68
mm
STROKE
SERIES
WSM,
01
162
Head
covBr
Tightening
torque
nut
DISASSEMBLING
AND
ASSE
M
BLl
NG
3.9
to
5.9
N-m
0.4
to
0.6
kgfmm
2.9
to
4.3
ft-lbs
NOTE
0
The cylinder heads with
serial
numbers
489291
and on are partially modified
in
configuration because of
the introduction of the nozzle heat seal.
For replacing the cylinder head,
see
the
Parts
List
and choose the right one in reference
to
its
serial number.
[I]
DRAINING WATER AND
OIL
Draining Cooling Water and Engine
Oil
CAUTION
0
Never remove radiator cap until cooling water
temperature
is
below its boiling point. Then
loosen cap slightly to the stop to relieve any
excess pressure before removing cap completely.
1.
PreDare a bucket. Open
the
drain cock to drain
cooling water.
drain engine oil
in
the
pan.
2.
Prepare an oil pan. Remove the drain plug to
[Z]
EXTERNAL COMPONENTS
Air Cleaner and Muffler
1.
Remove the air cleaner.
2.
Remove muffler retaining nuts to remove the
muffler.
(When reassembling)
a
Install the muffler gasket
so
that
its
steel side face
the muffler.
I
2-
A1
t6WO4
[3]
CYLINDER HEAD AND VALVES
Dynamo and Fan
Belt
1.
Remove
the
Dynamo
(1).
2.
Remove
the
fan belt
(2).
(When reassembling)
0
Check
to
see that there are no cracks on
the
belt
surface.
I
IMPORTANT
0
After reassembling the fan belt, be sure
io
adjust
the
fan belt tension.
(1)
Dynamo
(2)
FanBelt
Cylinder Head Cover
1.
Remove the cylinder head cover cap nuts.
2.
Remove
the
cylinder head cover
(1).
(When reassembling)
0
Check to see
that
the
cylinder head cover gasket
is
not defective.
(1)
Head
Cover
S-61
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