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Revised 09/2004
S-101
1-25
UPPER THREAD DRAW OFF AND TENSION ADJUSTMENTS
Keep tension
n
tight enough to bread the upper thread at the last stitch.
Make sure that lever
o
releases tension
n
when the machine starts sewing, so that only tension
p
will be effective during the sewing cycle. This tension should swing in the direction of arrow
(Y) when the machine reaches the far end of its travel and in the direction of arrow (X) just
before the machine stops.
To obtain maximum length of starting thread at
v
proceed as follows:
Make sure machine is in its normal stopping position. Loosen screws
s
and
t
and rotate cam
u
to the point where pin
q
is at the bottom of the cam drop at
r
as shown Figure 1. Then
tighten screws
s
and
t
securely.
To decrease the length of starting thread
at
v
, adjust the position of cam
u
as
required in the direction of arrow marked
less, Figure 1.
Note:
For machines equipped with needle bar
type upper thread draw off, see sheet
22.
THREAD PICK-UP ADJUSTMENT
The pick-up hook Figure 2 dips with the cutting lever
and grasps the upper thread and holds it out of the way for
the next buttonhole. - The extent of the dip downward so
that it will not miss the thread is adjusted by loosening
the screw
w
and swinging the plate upon its fulcrum
pin as desired.
UNDER THREAD DRAW-OFF AND
TENSION RELEASE
To provide more of less thread, loosen
nut and adjust stud up or down to
suit.
Tighten nut securely.
n
u
p
t
s
r
q
o
v
w
CORD TRIM - MACHINE ADJUSTMENT