S-311
1-57
Released:01/2014
E-mail: [email protected]; webside: amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
E - STANDARD MACHINE ADJUSTMENT
16. UPPER TRIMMING AND LOWER INTERCEPTION - CT
16.1 After installation of the thread retainer
13
with trimming knife
1
, adjust the height of the thread retainer
13
to
within 0.2 mm of the top of the throat plate
16
.
16.2. Using the screw
2
adjust the trimming knife
1
so that the right edge of the nipper is covered with the stitching
plate edge
16
(see picture). The thread holder must lean on the front side of the throat plate to catch and hold the
lower thread for next buttonhole sewing. When the trimming knife moves, the thread holder must move over the
throat plate without binding. To adjust - loosen the nut of the screw
14
and screw out or in the adjusting screw
15
.
Tighten the nut.
16.3. Position the tip of the trimming knife
1
0.9 mm in front of the needle
6
by loosening screw
5
.
Check the adjustment for keeping the clearance according to the point 16.2.
16.4. The normal home position of the trimming mechanism
1
is adjusted using screw
7
. Correct
adjustment prevents cutting of the looper thread
8
(See diagram).
16.5 Adjust the initial position of the control lever
9
to the space 0,05 — 1 mm from stud
10
by the screw
11
after
loosening its nut.
EDGE
Looper position when cutting
In this case the bottom
thread is trimmed