2022-Ultrafeed LSZ Guidebook - Flipbook - Page 46
Needle Issues
The needle is breaking
Ensure the needle is large enough for the thickness and type of material being sewn. Also make sure the point of the
needle is the correct type for the material being sewn.
Needles will also snap if there are jams or tangles in the bobbin. Before installing your bobbin, make sure it is wound
correctly and unwinds smoothly.
The needle hits the needle throat plate when reversing sewing directions
This is most likely caused by a bent needle. To avoid bending needles when changing sewing direction, stop the machine
with the needle positioned either at the top or bottom of its stroke. When the needle is completely up, the foot can move the
material but cannot bend the needle. When the needle is completely down, the outer portion of the walking presser foot is up
and cannot move the fabric, which also would bend the needle.
63
The balance wheel rotates, but
the needle does not move
1. Make sure the Posi-Pin® (A) is fully
inserted.
2. If slipping still occurs, remove the
Posi-Pin (A) and reverse-threaded
Posi-Pin nut (B) and slide the balance
wheel (C) off the bushing.
3. Use a 2.5mm hex key to tighten the two
set screws (p. 65, 23) that fasten the bushing
to the machine’s upper shaft, then reinstall the
balance wheel and check for proper operation.
43 |
A
C
A
B
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