General
Chedtup
Before the machine
is
delivered
to
the
customer it must
be
given a thorough
checkup to ascertain that it
will function properly. Unfortunately, all kinds
of
sewing trouble may
be
caused
in
transit.
Winding
the
Bobbin
To
make
the machine
ready
for sewing, wind No. 60 thread on
the
bobbin,
at
·
the
same
time checking
the
correct working
of
the
bobbin winder. Check
to
see,
in
particular, that the
bobbin
is wound evenly
and
that
the
bobbin
winder
stops automatically when
the
bobbin
is full (see
page
16).
Inserting
the
Bobbin
Case
Insert o full bobbin into
the
bobbin
case
and
check
the
tension on the
bobbin
thread
(see
page
15).
Hoving ascertained
that
the
tension is correct, check to see that
the
needle
is
above
the needle
plate
before
you insert the
bobbin
case
in
the
machine.
With
the
thumb
and
forefinger
of
·your left hand, lift bobbin
case
latch k
and
turn the bobbin case until the slot marked with
on
arrow
in
Fig
.
34
points up.
Then
place
it on center stud s
in
the bobbin
case
base.
Release latch k
and
press
aga
inst the
bobbin
case
until you
hear
it
snap
into
place.
An
improperly inserted bobbin case
is
op
t to
cause
needle
breakage.
In
replacing
the
bobbin
case
make sure
that
the
loose
end
of
the
bobbin
thread
will
not
get
jammed
in
the
hook raceway.
Fig.
33
Engaging
and
disengaging the sewing
mechanism
Fig.
34
Inserting the
bobbin
case
17
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