– 6 –
(1) Types and Names of Gradations on the Hand-wheel
Standard Adjustment
3. Standard Adjustment
Adjust the timing of each operation of the sewing machine while aligning the upper side of the hand-wheel
pointer
with the corresponding gradation on the hand-wheel
. The gradation on the hand-wheel
and
the pointer
on it can be observed through the notch
on the belt cover.
Scale plate of the
hand-wheel
Timing of the opener
(Refer to (13)).
Timing of thread trim-
ming action
[Refer to (11)-8).]
(LU-2212N-7)
Range of the upper stop
position
Timing of thread trimming action
[Refer to (11)-7).]
(LU-2210N/W-7, LU-2260N/W-7)
Feed rock timing (Refer to (6)-1).
Aligning the pointer on the machine arm
(highest dead point of the needle bar)
H
Direction
of rotation
L
K
J
H
G
F
E
D
C
B
A
A
B
C
D
E
F
H
G
J
K
L
Timing between the needle and the hook (Refer to (4)-3).
Amount of alternating vertical movement of the walking foot and presser foot (Refer to (6)-5).
Height of the feed dog (Refer to (6)-4).
Thread trimmer cam timing [Refer to (12) – 11)] (LU-2220N-7)
