Harbor Freight Tools 3914 - Manual (Page 14)

Page 14 For technical questions, please call 1-800-444-3353. SKU 3914
winding thread Onto the Bobbin
Thread Guide Hole
(43i)
Thread
from
Spool
(not
shown)
Figure 20
Bobbin Winder Shaft (5i)
Thread
Tension
Bracket
(18i)
Tension
Discs
(21i)
Bobbin (17h)
1. Route the Thread from the Spool, up
through the Thread Guide Hole (43i),
through the hole in the Thread Tension
Bracket (18i), then over and under
between the Tension Discs (21i).
Wrap the thread end around the Bobbin
2.
(17h), overlapping it several times to
secure the thread on the bobbin.
3. Place the Bobbin onto the Bobbin
Winder Shaft (5i)
with the thread
coming from
underneath (See
Figure 20). If
needed, use the
large Screw
Driver (14h) or a
pair of pliers
(sold separately)
to open or close the end of the Shaft so
the Bobbin is snug enough to turn with
the Shaft, yet can still be pulled off easily.
Turn on power to the Sewing Machine,
4.
press the Treadle Pedal, then the
Connecting Rod (6i) to engage the
Bobbin Winder and wind thread onto
the Bobbin. When finished, release the
Connecting Rod, the Treadle Pedal and
turn off power to the Sewing Machine.
Cut the thread and remove the Bobbin.
Setting the Bobbin into the Bobbin
case and into the Machine
Figure 22
A
B
C
Bobbin
(22c)
Bobbin Case (21c)
1. After filling the Bobbin (22c) with thread,
hold it so that the thread exits to the left,
and push it into the Bobbin Case (21c).
Following Figure 22, feed the thread
2.
through slit “A” and pull the thread in
direction “C”. By doing so, the thread will
pass under the tension spring and exit at
notch “B”.
Verify that the Bobbin rotates in the
3.
direction of the arrow when thread “C” is
pulled.
Pull out at least 4” of thread.
4.
On the top of the machine, rotate the 5.
Hand Wheel counterclockwise until the
needle is in its topmost position.
Figure 23
Bobbin Case (21c)
Hinged
Latch
on Bobbin
Case
Bobbin (22c)
Thread
Underside of Machine
Rotating
Hook (20c)
6. Holding the Bobbin Case by the hinged
latch, insert the Bobbin Case into the
Rotating Hook (20c) from the underside
of the machine.
Release the hinged latch as the Bobbin
7.
Case slides into place.
Figure 21
Bobbin
Winder
Shaft
(5i)
Connecting
Rod (6i)
reV 07a, 10b