A
63
A
B
C
64
D
E
F
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�
Needle Issues
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�
Bobbin Winding Issues
The bobbin is not filling evenly, either too
much thread on the top or bottom
Locate the bobbin tensioner (
D
) and loosen the screw
(
E
) just under the tensioner on the front of the machine�
Move the tensioner down if the bobbin is filling with too
much thread on the top� Move the tensioner up if there is
too much thread on the bottom� Tighten the screw after
correct positioning�
The bobbin winder stops before the bobbin is
full or after the bobbin has too much thread
There is a bobbin stop (
F
) right next to the bobbin winder�
Simply loosen the screw found on top of the black lobe and
turn the stop to change the thread fill level.
The closer the lobe is to the bobbin the less it will fill, the
farther away the more it will fill.
43 |
Sailrite�com
Ultrafeed
®
LSZ Guidebook
| 44
