1
Photo
18
11.
Placement
ol
the
Work
When depressing the left
treadle,
the work clamp is raised. Then the work
is
placed
into
the
machine
with
the
front
end
of
the
marked
buttonhole
under the needle. In
order
to ovoid crooked buttonholes, the buttonhole
marking should be placed exactly in the middle under the work clamp.
When the left treadle is released, the work clamp is again lowered onto
the
work.
Upon lifting the work clamp, lifting lever L is pulled between the vertical
guide
and
the
lower
end
of
locking lever S so
that
the machine
cannot
be
started
accidentally while the work clamp is
raised
(Photo 18).
12.
Slariing
ihe
Machine
Don't run the machine unless you have thoroughly familiarized yourself with
its operation. Make particularly sure that you know how to stop the mo-
chine
during
o sewing
cycle
and practise actuating the
knife
interlocking
mechanism (see Section
14).
Only when the operator is fully acquainted with
18
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