– 16 –
Standard Adjustment
2) Clearance between the Needle and the Blade Point of Hook
Gap between the needle and the hook
blade point
= 0.05 to 0.1 mm
Requirements:
• The timing between the needle and
the hook should be adjusted in ad-
vance.
• Effective amount of the needle
guard: 0.15 to 0.2 mm
• The stitch dial should be set to [0]
on the scale.
Blade point of the
hook
The needle guard
does not work.
The needle guard
works.
Hook driving
shaft set collar
H o o k d r i v i n g
shaft coupling
Hook driving shaft
2.5
±
0.3mm
2.5
±
0.3mm
A
2.5
±
0.3mm
B
C
D
0.05 to 0.1mm
Blade point of the
hook
Needle guard
0.15 to 0.2mm
Blade point
of the hook
0 to 0.05mm
(LU-2210N/W-7, LU-2260N/W-7 and LU-2212N-7)
(LU-2220N-7)
