HOW TO USE
3
Selection of the thread
It is recommended to use “S” twist thread in the left needle (viewed
from front), and “Z” twist thread in the right needle.
When discriminate use of needle threads is impossible, use “Z” twist
thread in both the needles.
For bobbin thread, “S” twist thread as well as “Z” twist thread can be
used.
4
Threading of needle threads
1 . Pass each needle thread through thread guide (A).
Note: When thin slippery thread (polyester thread or filament
thread, etc.) is used,
Pass the thread through thread guide (B) as well.
2 . With the thread take-up lever located at the upper most position,
pass each needle thread in the order shown in the following figure.
LU2-4400
LU2-4400 : Needle part
LU2-4420
LU2-4420 (LU2-4400 : refer to the only left thread)
to , to (Detail)
L12
L14
R10
R12
to (Detail)
L12
L14
Lead the thread leftward
Lead the thread rightward
(See detailed figure)
R2
L2
R1
L1
R10
R11
L10
R5
R6
R3
R4
R7
R9
R8
L3
L8
L7
L4
L11
L12
L13
L14
L15
L15
L16
L16
R12
R13
R14
L5
L9
L6
Lead the thread
rightward
S twist thread
Z twist thread
A B
A
A
B
— 4 —
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
