Adjustment Of Top Covering Thread Trimmer - JUKI MF-7000 Series Engineer's Manual

MFC

10) Adjustment of top covering thread trimmer

Make adjustment such that the top covering thread cutting movable knife %1 comes to the center in V-
shaped slot of spreader when the sewing machine is at rest, and does not contact the spreader % 2
and the top covering thread when the movable knife %1 is open.
(Old type)
%1
Adjusting cover thread trimme
The following adjustments are made with the needles at top dead center.
(New type)
Clearance between top end of
moving knife and spreader
^0
1.5 to
2mm
^0
Standard Adjustment
%2
%4
%8
%7
%9
0.2 to 0.4 mm
&0
^4
^1
^3
Clearance between top end of moving
knife and left side of left needle
0.2 to 0.4 mm
−
%3
%6
%5
Movable
knife
close
%1
±0.5 mm
61
−
Movable
knife
open
Top covering
thread
^6
^2
^5
^9
^8
^7