Brother BM3700 User Manual

KNOWING YOUR SEWING MACHINE ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
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17
Note
● If the thread is not correctly inserted through
the tension-adjusting spring of the bobbin
case, it may cause incorrect thread tension.
1 Tension-adjusting spring
3
Replace the bobbin cover. Put the
projection into the race retainer groove
and push closed.
1 Groove
2 Projection
• Start sewing after threading the lower and
upper thread. When sewing gathers or darts,
you can draw up the lower thread by hand so
that some thread will be left over. Refer to the
steps in “Drawing up the lower thread”
(page 21).
Upper threading
1 Spool pin
2 Thread guide (back)
3 Thread guide (front)
4 Thread take-up lever
5 Mark on the handwheel
CAUTION
1
1
2
● When threading the upper thread, carefully follow the instructions. If the upper threading is
not correct, the thread may become tangled or the needle may bend or break.
● Never use a thread weight of 20 or lower.
● Use the needle and the thread in the correct combination. For details on the correct
combination of needles and threads, refer to “FABRIC, THREAD, AND NEEDLE
COMBINATIONS” on page 22.
4
3
2
2
1
5

Brother BM3700 Specifications

General

Type	Automatic sewing machine
Free arm	Yes
Product color	White
Buttonhole type	-
Number of programs	74
Sewing machine functions	Sewing
Number of stitch patterns	37
Power supply type	Electric

Weight and Dimensions

Depth	159 mm
Width	389 mm
Height	300 mm