Figure No. 17
Figure No. 18
21. If the machine is not
handlleol
properly; or is out of time or any
other adjustment, the thread may tangle around the looper. See
Figure No. 19. As a result the machine won't feed and may chew
up the bag. When this
occurs,
STOP
the
machine
immediately, if
you continue to run the
machine
in this condition, the thread
will
pile up
around
the looperand break it. If
you
think
machine
is not
acting right, stop and
look
at the open end "A," Figure No. 19.
It is not
necessary
to
remove
machine
from
bag to do this. If the
stitch formation is perfect, it
will
look
like
Figure No. 20.
If the thread is tangled, first raise needle to high position by
turning
machine
pulley
in
either direction by
hand.
Then,
with
a
sharp
knife,
carefully
cut the
tangled
threads
away
from
looper,
cleaning
out
all
cuttings.
Be
careful
not to
nick
or
roughen
looper.
Next,
lift
presser
foot by
depressing
lever
"A,"
Figure
No.
16,
and
remove machine from bag. Then re-thread and start to sew as
explained in Paragraph No. 20.
Figure No. 19
Figure No. 20
Page
Fourteen
MECHANICAL
ADJUSTMENTS
ilf
water
proofed
bags
are
being
used,
be
sure
to
lubricote
thread
according to the instructions in
paragraph
C,
page
7.
22.
The
length
of
stitch
is
3'/2
fo
fhe
inch
when,
at
their
highest
point,
the
teeth
of the
feed
dog
protrude
3/32
of an
inch
above
the
throat
plate.
If
the
stitches
shorten
up,
check
the
following:
A.
Teeth
on
feed
dog
may
be
worn
down.
Feed
dog
must
then
be
replaced.
B.
Feed
dog
may
have
slipped
down
so
that
the
teeth
protrude
less
than
3/32".
Merely
raise
feed
dog
by
raising
the
adjusting
screws. No.
1-203,
located on the feed carrier block. Note
that
there isa set of
locking
screws,'No.
1-203,
on the underside of
the
carrier
block.
23.
Ifthe
machine
stops
chaining,
check
the
following:
A.
The
needle
Tnay
be
blunt,
bent
or
dull.
If
so,
change
imme
diately.
B.
D.
Check
the
tension,
iftoo
tight
or
too
loose,
readjust
per
para
graph 9.
Next,
remove
throat
plate
which
is
part
I
-280
and
inspect
the
area on the
under
side
surrounding
the
needle
hole.
If
this
is
nicked
or
rough
in
any
way,
the
machine
will
not
chain.
This
part
becomes
damaged
if
the
operator
interferes
with
the
feeding
ofthe
machine
asit
sews
across
the
bag.
Holding
the
machine
back
or
pulling
it
in
any
way
causes
the
needle
to
glance,
thereby
coming
down
and
striking
this
area.
If
the
damage
isn't
too
great,
this
area
can
be
smoothed
out
with
fine
emery
or
crocus
cloth.
However,
if
the
hole
gets
too
big,
this
part
is
unfit
forfurther
use
and
must
be replaced
with
a
new
one.
Next,
check
the
looper.
This
ispart I-I32N. Ifthisis
nicked
or
roughened
up
or
the
point
chipped
off,
it
must
be
replaced.
This
part
cannot
be
properly
repaired
unless
the
damage
is
very
slight
and a
small
amount
of
polishing
will
smooth
it out.
Pag®
Rftsan
From the library of: Superior Sewing Machine & Supply LLC
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