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Note
·
When
1
nslall1ng ttie cylinder head 1he
earn sprocket mus1 be con1a1ned
w11h1
r
the
cylinder head
IF1g.
27l
2.
Ma~ e sure that the respect
Vt:
gask~ts.
dowel ptns and rings have nor been
overloo~ed
3
W
hen torauing down the cvl111der head
t1gh1en
the nuts uniformly n a diagonal
st!auence as shown 1n the Fig.
28
and
torque to the fina
l
specified 1oroue value
of
6 5
-
9 ft
lb
(
90
120
kg-crn)
6
PISTON
ANO
PISTON RINGS
A.
Description
The p1s1on
1
s madi> of special SAE 332
a luminum Jlloy to m
,n,m1
2e material Jclor
mauon caus'3t1 by high temperature and also
because of 11s good wear res1:.1an1 Qual ties
The
piston
rings espec,ally
should
oe
i11ghly
resrslftnt
and
t
herefore.
t11ey
are
hard
chrome pla1ed or
we1
noneo
10 91\e 11
1he
des1reo cnarac1eris11cs
B
Disassembly
The piston 1s d isassembled from th~
co11-
nec11n9 rod by first removing the piston
pm clip anel then the 01ston om
(F,g
29)
No
te
.
When removing the piston pin clJp
place a rag
u11oer
the oistofl so lhat
the clip writ
not
ran
1ruo lh"'
crankcase
11
11
should acc•oemally oe dropped
2
To
rernove
lh~
piston
rings
from the
p1s1on.
ll
1s
recommended that
the p1s1on
ring
remover be
used.
however
11
ona
1s not
available
they
can
be
removed
bv
hand.
but
care
should
be
exercised
so
that they
are
not
broken
r
-
,·llnt1E'
fig
27
<l'
P,s, )n
12.J
P1 .. 1on
p,n
(
lip
F,g
29
15
]
Cum cnni
n
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