Harbor Freight Tools 3914 - Manual (Page 16)

Page 16 For technical questions, please call 1-800-444-3353. SKU 3914
pulling it to the top of the machine. Pull
both threads behind the Presser Foot,
leaving at least 4” of excess thread.
adjusting the Stitch length
Figure 26
Stitch Length
Dial (46e)
To increase or decrease the stitch length,
turn the Stitch Length Dial (46e) to
the desired number (in millimeters) as
indicated at (A) above.
adjusting the needle thread tension
Figure 27
Tension Adjustment
Knob (3a)
1. Turn Tension Adjustment Knob (3a)
clockwise to increase thread tension.
Turn Tension Adjustment Knob
2.
counterclockwise to decrease thread
tension.
adjusting the Bobbin thread
tension
Figure 28
Increase
Tension
Decrease
Tension
Bobbin
Case (21c)
Tension
Adjustment
Screw
1. Using a small flathead screwdriver (sold
separately), turn the Tension Adjustment
Screw on the Bobbin Case (21c)
clockwise to increase bobbin tension.
Turn the Tension Adjustment Screw
2.
counterclockwise to decrease bobbin
tension.
raising the presser Foot
The Presser Foot (9d) can be raised
and lowered using the Presser Foot
Lever (18d) or the Knee Lifter (21g).
The Knee Lifter raises the Presser Foot
momentarily (to a height of up to 1/2”),
as long as it is pushed, while the Presser
Foot stays in the raised or lowered
position when using the Presser Foot
Lever.
reV 10b