Important, Tension adjustments, Balanced tension – Brother 2340CV User Manual
Page 8: Needle thread is too loose, Needle thread is too tight, Two needles three threads cover stitch
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Two needles three threads cover stitch
6 mm (15/64 inch) (Wide)
Use three threads, two front needles and the looper
thread to sew a 6 mm (15/64 inch) or 3 mm (1/8 inch)
cover stitch.
Use: Ideal for hemming and for decorative stitching.
Needles and threading
• For details on installing and removing the needle,
refer to “Needle” on page 7.
©Left needle
©Right needle
IMPORTANT!!
Lightly tighten the screw at the unused needle
position, so it does not fall out while sewing.
For details on threading the machine, refer to “I
Threading” on page 9 to 10.
< Threading the left and right needle >
< Threading the looper >
3 mm (1/8 inch) (Narrow)
Needles and threading
• For details on installing and removing the needle,
refer to “Needle” on page 7.
©Left needle
©Center needle
IMPORTANT!!
Lightly tighten the screw at the unused needle
position, so it does not fall out while sewing.
For details on threading the machine, refer to
Threading” on page 9 to 10.
< Threading the left and center needle >
< Threading the looper >
Tension adjustments
(1) First, set each thread tension dial to the number
shown below.
©Tension selection mark
6 mm (15/64 inch) (Wide)
Left needle dial
(yellow)
Center needle dial
(pink)
4
-
Right needle dial
(green)
Looper needle dial
(blue)
4
4
3 mm (1/8 inch) (Narrow)
Left needle dial
(yellow)
Center needle dial
(pink)
4
4
Right needle dial
(green)
Looper needle dial
(blue)
-
4
--------------------------- CAUTION ------------------------------
Make sure that the thread is properly seated in
the tension discs by holding the tension release
button to the right while passing the thread
through the tension discs.
(2) Sew a test stitch. (Refer to “V. Sewing” on page 15.)
(3) Adjust the tension of each thread according to the
condition of the stitch.
Stitching direction
Balanced tension
The needle thread sews a straight seam on the top
side and the looper thread forms loops on the under
side of the fabric.
Needle thread is too loose
Turn the needle thread adjusting dial to a higher
number. Or turn the looper adjusting dial to a lower
number for looser tension.
Needle thread is too tight
Turn the needle thread adjusting dial to a lower
number. Or turn the looper adjusting dial to a higher
number for tighter tension.
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