1-39
S-4001 ISBH+I SM 30°
Released: 09/2017
E-mail: [email protected]; webside: amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
E - STANDARD MACHINE ADJUSTMENT
9.2. Second bar adjustments
The principle of work:
The second bar
2
is performed according to the first bar adjustment
made before; changing the setting of the first bar influences the
second bar too.
Insert a piece of paper under the clamp feet and clamp in service
mode to see how the machine works. Turn the hand wheel through
the sewing cycle until the dog
3
releases the front shifter arm pocket
4
. Then the cam will be engaged and starts to turn while you turn
the hand wheel.
Before performing the second bar the machine makes 3 stitches
regular bite.
The last 2 stitches are made to firmly lock the sewing end.
The diagram below shows the stitches.
Stitches
5
,
6
,
7
are of standard bite, stitch
8
is the large bar,
stitch
9
is the final locking stitch.
Adjustment:
Check the side clamp plate movement in the stitches
4
and
5
, see
the picture below, start when the needle is out of the fabric.
If the movement starts earlier or later then the needle eye is at the
paper level, the adjustment of the first bar needs to be checked.
In case there is a difference of the movement comparing first and
second bar, it will be necessary to adjust the first bar advanced or
delayed of the rule and find a compromise that no side movement
happens with needle in the fabric.