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PREPARATION
PREPARATION
18
SETTING THE UPPER THREAD
Upper Thread Setting
Procedure
1. Pass the thread from the
spool (1) through the hole
on the thread guide (1)
just above the spool (1)
and further pass it through
thread guides at the mid-
dle and front rows.
2. Pass next the thread
through the sub thread
tension regulator (1).
3. For spools (4), (7), (10)
and (13), set the thread in
the same manner up to
the sub thread tension
regulators of the same
number.
4. Pass the thread from the
spool (2), at the middle
row, through the hole on
the thread guide (2) just
above the spool (2) and
further pass it through the
thread guide at the front
row.
5. Pass the thread through
the sub thread tension
regulator (2).
6. For spools (5), (8), (11)
and (14), set the thread in
the same manner up to
the sub thread tension
regulators of the same
number.
7. Pass the thread from the
spool (3), at the front row,
through the hole on the
thread guide (3) just above
the spool (3).
8. Pass next the thread
directly through the sub
thread tension regulator
(3).
9. For spools (6), (9), (12)
and (15), set the thread in
the same manner up to
the sub thread tension
regulators of the same
number.
Thread guide
Spool (1)
Tension base
Spool (1)
Spool (2)
Spool (3)
Rear rowMiddle rowFront row
Thread guide
Sub thread tension regulator (3)
Sub thread tension regulator (2)
Sub thread tension regulator (1)
(1)
(4)
(7)
(10)
(13)
(2)
(5)
(8)
(11)
(14)
(3)
(6)
(9)
(12)
(15)
(4)
(7)
(10)
(13)
(5)
(8)
(11)
(14)
(6)
(9)
(12)
(15)
Fig. A Passing the Upper Thread:
Spool to Thread Guide