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64
4.
FRAME
Figure
4- 47.
Air
cl
eaner connecting tube
!C50
,
C50M,
C65,
C65Ml
Figure
4-
48.
figure
4-49.
Removing
air
cleaner
1550,
5651
a
.
Air cleaner Co
n
struc
ti
on
Th
e function
of
the
a·r cl
eaner is
to clean by
filtering, al
l
air
entering
the
en
gine
through
the
carbu
r
eto
r
and
prevent the
piston
and cylinder
from
wear caused by dust
and
gri·.
Acetate
fiber
filter
is
used for
fi
lte
r
element
and
the
surface area made
large as possible to
provide
an
efficient
air
intake.
The a
ir cleaner
is mou
nted a
th
e
center
of
th
e
fron
t
cover
for models
C50,
C50M,
C65
and
C65M
and at the center
of
the frame
on the
right
hand side
for models
S50
and
565.
All
air
entering
t
he air
cleaner
is filtered, passes through
the w
elded air
c leaner pipe
withi
n t he f
rame
and after
passing
through
t he
ai
r
cl eaner
rubber
conn
ecting tube,
ente
rs
t
he
carbur
eto
r.
The large size tube used in the
C50,
C50M,
C65,
C65M,
is to provid
e
good air now and t
o
heat
t
he
ai
r
as well as to minimize noise produced
by
air flow.
(Fig.
4-
47)
b
.
Disassembly
Ill
The air
cleaner of
models
C50,
C50M, C65
and
C65M
can be removed
by
loosening t he cap nut
at the top
of
the air c leaner cover. (Fig.
4-48)
1 21
The
a
ir
cleaner
on mo
dels
S50
and
S65
can be
removed
by removing
the
air
cleaner cove
r
o
n
he
right-hand
side.
(Fig.
4-
49)
c.
Inspe
c
tion
Ill
Ai
r clea
ner
case which
is deformed shou ld be
replaced
as
it
w
ill restrict
t
he air
flow.
5
.
Reassembly
Ill
Reassemble
the air
cl
eaner in tlfe
reverse order
o
f disassembly.
4
.
1 0
FRAME BODY
The frame
body
of
C50,
C50M, C65
and
C65M,
differ
from models
S50
and
S65
in
that
it consists
o
f steel
pipe and pressed steel sheets, assembled
by
we
lding. The
sectional
contour cha nges i
n p
laces
to
su
pport load and to prevent stress
concentration,
and
is made
strong and light
in
weight.
The head pipe
acts
as the
center of
the
front
w
he el pivot
and
t he angle formed
by
the head pipe
and
the frame
perfo
rms an important f unction as
a
basis
for the
caster.
(Fig.
4-
50)
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