Brother BM3700 Service Manual

Inspection and
Adjustment
Inspection and
Adjustment
4 - 8
Adjustment Needle bar supporter stopper L position
[Standard]
At pattern selection dial [3] (zigzag stitch) and stitch width dial [5] (maximum), when the
needle is dropped to the left side, the clearance between the needle bar supporter and the
stopper L should be 0.3 to 0.6 mm.
[Adjustment]
1. Remove the face plate and the accessory table.
2. Remove the presser foot.
3. Attach the size 90/14 needle.
4. Turn the pattern selection dial until the [3] is the topmost position.
5. Turn the stitch width dial until the [5] is the topmost position.
6. Turn the pulley by hand until the needle top comes to the needle plate surface. (Needle bar is left side.)
7. Loosen the screw 1 of the stopper L.
8. Move the position of the stopper L left and right, and adjust the clearance between the needle bar supporter
and the stopper L.
9. Tighten the screw 1 of the stopper L to secure the stopper L to the base holder.
[Confirmation]
Turn the pulley by hand until the needle top comes into the needle hole of the needle plate. (Needle bar is left side.)
And then check that the needle top does not contact the needle plate when the needle bar supporter contacts the
stopper L by pushing the needle bar to the left side.
1
Bolt, Socket
M3X6
Needle
Needle plate
Needle bar
Pulley
Pattern
selection dial
Stitch width dial
Stopper L
Base holder
1
Hex wrench
2.5 mm
Stopper L
Bottom side view
0.3 - 0.6 mm
Needle bar supporter

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