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5-2 Looper left-to-right movement
When the point of the looper moves from the
right/left to the left/right, distance A from the top of
the needle's eye to the point of the looper at the left
side of the needle should be equal (see the
illustration on the right). To make this adjustment,
remove the machine cover, loosen three screws C on
looper eccentric B and then shift looper eccentric B
by turning the machine pulley while holding looper
eccentric B.
5-3 Looper setting distance
When the looper is at the extreme right end of its
travel, adjust distance 5mm from the point of the
looper to the right side of the needle.
Adjustment is made by loosening screw B.
5-4 Needle bar height
When the point of the looper has reached the center
of the needle with the machine pulley turned in the
operating direction, adjust distance 2.5mm from the
top of the needle's eye to the point of the looper on
the back side of the needle. The adjustment is that
raise needle bar up or down by remove rubber caps
A and loosen the screw C.
< Note >
After the above adjustment is made, install the needle
plate and then check to make sure each needle drops
correctly into the center of the each needle drop hole.
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