Harbor Freight Tools 3914 operating instructions With the thread

Bobbin Winder Shaft (5i)

Figure 20

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).

2.Wrap the thread end around the Bobbin (17h), overlapping it several times to secure the thread on the bobbin.

3.Place the Bobbin onto the Bobbin

B

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).

2.Following Figure 22, feed the thread 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”.

3.Verify that the Bobbin rotates in the direction of the arrow when thread “C” is pulled.

4.Pull out at least 4” of thread.

5.On the top of the machine, rotate the Hand Wheel counterclockwise until the needle is in its topmost position.

to open or close the end of the Shaft so the Bobbin is snug enough to turn with

Bobbin (22c)

Thread

Bobbin Case (21c)

Underside of Machine

Rotating Hook (20c)

Hinged

Latch

on Bobbin

Case

the Shaft, yet can still be pulled off easily.

4.Turn on power to the Sewing Machine, 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.

Figure 23

6.Holding the Bobbin Case by the hinged latch, insert the Bobbin Case into the Rotating Hook (20c) from the underside of the machine.

7.Release the hinged latch as the Bobbin Case slides into place.

REV 07a, 10b