7
< Note >
After the above adjustment, check to make sure each
needle drops into the center of each needle hole .
5-3 Looper setting distance
Set the looper so that the distance from the point of the
looper to the center of the needle bar is 6mm when the
looper is at its farthest position to the right.
For 1-needle machines, this distance is 4mm.
To make the fine adjustment of each gauge size, please
refer to 5-4 Needle height.
5-4 Needle height
The point of the looper should be 1.3~1.6mm above the top
of the left needle's eye on the back side of the needle when
the point of the looper has reached the center of the left
needle with the machine pulley turning in the operating
direction (see 5-2). To adjust the height of the needle,
1.
Set the needle bar at the top of its stroke.
2.
Remove the plug on the head cover.
3.
Loosen screw A.
4.
Move the needle bar up or down.
Needle height (Bmm)
LOOPER SETTING
DISTANCE
(Amm)
Without
UTC
UTC
31 33 31 33
All common
3.2
(1/8) 9.8 10.8 9.1 10.1
4.4~4.7
4.0 (5/32)
9.3
10.4 8.6 9.7
4.0~4.3
4.8 (3/16)
8.9
10
8.2
9.3
3.6~3.9
5.6 (7/32)
8.5
9.6 7.8 8.9
3.2~3.5
6.4
(1/4) 8.1 9.2 7.4 8.5
2.8~3.1
Needle
stroke
Gauge
(INCH)
(mm)
From the library of: Superior Sewing Machine & Supply LLC
