3
【
5
】
ADJUSTING THE THREAD TRIMMER
5555----1 Position of the movable knife and the stationary knife
1 Position of the movable knife and the stationary knife
1 Position of the movable knife and the stationary knife
1 Position of the movable knife and the stationary knife
■
Position of the movable knife
Set the (a 1) part of the movable knife A parallel to
the (g 1) part of the stationary holder G.
Set the distance from point of movable knife A and
the center of left screw H at approximately
73.5mm.
■
Relation between the stationary knife and the
movable knife.
Adjust the engagement between blade (a 3) for
trimming looper thread and stationary knife to be
0.5mm when movable knife is at the extreme right.
So that the point of blade (a 2) for cutting needle
thread pass the corner (b 1) of stationary knife B.
The adjustment is made by loosening screw C.
Note that the looper thread clamp spring is
simultaneously loosened.
5555----2 Ad
2 Ad
2 Ad
2 Adjusting the looper thread clamp spring
justing the looper thread clamp spring
justing the looper thread clamp spring
justing the looper thread clamp spring
Position of looper thread clamp spring D so that
the part (a 1) of movable knife and the part (d 1) of
looper thread clamp spring are on the same plane.
And adjust it will protrude approximately 2.2mm
from the point of movable knife A when movable
knife is at the extreme right. Adjustment is made
by loosening screw C.
5555----3 Adjusting the movable knife pressure spring
3 Adjusting the movable knife pressure spring
3 Adjusting the movable knife pressure spring
3 Adjusting the movable knife pressure spring
Position of movable knife pressure spring F so that
the part (a 1) of movable knife and the part (f 1) of
movable knife pressure spring are on the same
plane.
And adjust it will protrude approximately 5.2mm
from the point of movable knife A when movable
knife is at the extreme right. Adjustment is made
by loosening screw E.
