Operation Manual

7.
Stopmatic
Works
Incorrectly
Couse:
Remedy:
After
frequent
operation
of
the
Stopmotic
it
may
The
built-in
thermal
switch
may
hove
interrupted
the
electric
circuit.
hoppen
thot
the
toke-up
lever
does
not
move
when
Woit
o
few
minutes
until
both
the
motor
and
the
thermal
switch
hove
you
push
the
presser
bar
lifter
up
oil
the
way.
cooled
down
ond
the
electric
circuit
has
been
closed
automatically.
Take-up
lever
strikes
hord
ogoinst
its
stop
or
does
Hove
your
Pfoff
dealer
adjust
the
Stopmatic.
not
rise
when
Stopmotic
lever
is
operated.
Note
the
“Fundamentals
of
Machine
Operation”
on
page
5.
Thread
Jamming
The
new
Pfaff
rotary
hook
will
not
normally
jam,
even
if
the
machine
should
be
handled
improperly.
If
thread
should
happen
to
jam
in
the
raceway
of
the
sewing
hook,
the
power
of
the
motor
in
most
instances
will
be
sufficient
to
overcome
hard
working
of
the
mechanism.
a
If
this
action
should
not
free
the
jammed
thread,
put
a
drop
of
kerosene
into
the
hook
raceway,
jerk
the
balance
wheel
back,
then
rock
it
back
and
forth.
Thread
jamming
can
be
avoided,
however,
if
you
follow
the
instructions
on
page
5.
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