AMF S-311 - 14. UPPER THREAD TRIMMING MECHANISM (AF;LTT)

S-311
1-55
Released:01/2014
E-mail: service@amfreece.cz; webside: amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
E - STANDARD MACHINE ADJUSTMENT
14. UPPER THREAD TRIMMING MECHANISM - AF/LTT
14.1. After installation of the holder with trimming knife
1
adjust the trimming knife after loosening the screw
3
to
obtain the clearance 0,1 — 0,15 mm above the right spreader
4
.
14.2. Using the screw
2
adjust the trimming knife
1
so that the left side of the knife was covered with the right side
of the throat plate.
14.3. 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 14.2.
14.4. 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).
14.5. 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.
Looper position when cutting