4
inserting
the
bobbin:
insert
bobbin
sc
that
thread
unwinds
towards
the
back
(A).
Draw
the
thread
into
slot
B
and
into
eye
C.
Checking
the
bobbin
thread
tension:
With
a
brief,
sharp
upward
movement
of
your
hand
the
bobbin
must
gra
dually
slip
downwards.
(Turn
screw
0
to
the
right
for
stronger
tension
and
b
the
left
for
weaker
tension).
4-
