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(37) Adjustment of the needle thread clamp notch
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
2. Needle thread clamp notch F position
1)
When the needle thread clamp link (asm.)
❷
is
pushed in Direction C and Part B of the needle
thread clamp support plate (asm.)
❸
and the
needle thread clamp
❹
begins to open, the
distance between the needle thread clamp
❹
and the needle thread clamp base
❺
becomes
22 mm (common to S and H type) (LK-1900BB,
1903BB, 1900BNB, 1903BNB : 20mm).
1. Needle thread clamp notch R position
1)
When the needle thread clamp link (asm.)
❷
is
pushed in Direction A and Part B of the needle
thread clamp support plate (asm.)
❸
and the
needle thread clamp
❹
begins to open, the dis-
tance between the needle thread clamp
❹
and
the needle thread clamp base
❺
becomes 17.5
mm (common to S and H type) (LK-1900BB,
1903BB, 1900BNB, 1903BNB : 15mm).
[LK-1900BB, 1903BB, 1900BNB, 1903BNB (Short tail application] [LK-1900BB, 1903BB, 1900BNB, 1903BNB (Short tail application]
❸
❹
20mm
Contact
❼
❾
❷
E
C
❸
❹
15mm
Contact
❺ ❶
❾
❷
D
A
❹
❸
B
❹
❸
B
Contact
S and H : specications in common S and H : specications in common
Contact
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