7
< Note >
After the above adjustment, check to make sure each needle
drops into the center of each needle hole .
5555----3 Looper setting distance
3 Looper setting distance
3 Looper setting distance
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. The table below shows
setting distance A from the point of the looper to the
center of the right needle when the needle is at the bottom
of its stroke and the looper is at its farthest position to the
right.
Setting distance A varies according to the needle space.
To make this
adjustment,
loosen screw C
(see 5-1) on the
looper holder.
5555----4 Needle height
4 Needle height
4 Needle height
4 Needle height
The point of the looper should be 0.5~1mm 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.
5555----5 Needle/looper front
5 Needle/looper front
5 Needle/looper front
5 Needle/looper front----to
to
to
to----back relationship
back relationship
back relationship
back relationship
The point of the looper is 0.5~1mm above the top of the
left needle's eye on the back side of the needle when it has
reached the center of the left needle. With the point of
the looper at this position, set the clearance between the
left needle and the point of the looper at approximately
0.2mm.
Then the looper should barely touch the right needle
(approximately 0.2mm). On 3-needle machines, the
clearance between the point of the looper and the middle
needle should be 0mm. To make the above adjustment,
1. Loosen screw C (see 5-1).
2. Move the looper holder front or back.
NEEDLE SPACE
(INCH)
LOOPER SETTING
DISTANCE A
3.2mm (1/8)
4.4mm
4.0mm (5/32)
4mm
4.8mm (3/16)
3.6mm
5.6mm (7/32)
3.2mm
6.4mm (1/4)
2.8mm
1 Needle
4mm
< Note >
When moving the looper holder front or back, be careful not
to change the looper setting distance.
