Brother X-5, VX-1435, LX-3125, LS-3125, LS-5000 User Manual

SERVICE MANUAL FOR

LS-2220 LS-2150
LS-2720 LS-2125i
LS-2820 LS-2125b
LS-2920 SL-7
LS-2320 JS-23
LS-2725 VX-1435
LS-2825 X-5
LS-1520 LX-3125
LS-2020 LS-3125
LS-2125 LS-3000
LS-2129 LS-5000
LS-2130

2.2001.

1.2011.



•

This service manual was compiled for use when repairing the LS-2220, 2720 Zigzag Stitch Sewing Machines.

•

Use this manual, together with the Parts Catalog, when making repairs.

•

This manual was written based on the most up-to-date product specifications at the time of printing.
Some machine specifications may have been changed to improve the quality of the product.
Contact the manufacturer or your local sales representative for information on such changes.

•

Symbols used

Move the part in the direction of
the arrow.

Set the clearance as indicated.

Move the part to its highest or
lowest position.

 CONTENTS 

Removing order of covers....................................................................................................................................1

Clearance between the needle and the shuttle hook point (Shuttle race position)........................................2

Clearance between the shuttle driver and the race way...................................................................................3

Needle swing (Parabola).......................................................................................................................................4

Needle down centering.........................................................................................................................................5

Loop lift..................................................................................................................................................................6

Height of the needle bar.......................................................................................................................................7

Tension of the timing belt.....................................................................................................................................8

Height of the feed dogs........................................................................................................................................9

Height of the presser bar....................................................................................................................................10

Adjusting the buttonhole’s left backward stitching and right forward stitching..........................................11

Adjusting the buttonhole’s right forward stitching width...............................................................................12

Upper tension control dial..................................................................................................................................13

Bobbin Winding...................................................................................................................................................14

Adjustment of lower thread tension..................................................................................................................15

Removing order of covers

•

Remove accessory table (A).

•

Loosen and remove the screw  then remove the face plate (B).

•

Loosen and remove the screws  then remove the front cover (C).

•

Loosen and remove the screws  lower the presser foot lifter, then remove the rear cover (D).

- 1 -

Clearance between the needle and

the shuttle hook point (Shuttle race position)

Standard

•

The shuttle race should be positioned correctly with respect to the turning direction of the shuttle race..

•

Clearance between the needle and the shuttle hook point should be 0.02 to 0.1mm.

Adjustment

•

Set the pattern selection dial to 6 .

•

Turn the balance wheel to set the needle and the shuttle hook to the correct timing position .

• Turn the needle bar supporter stud  slightly to either the right or left and adjust the clearance
between the needle and the shuttle hook.

Note: The center of the needle should align with the center of the shuttle hook shaft.

- 2 -