10
MC350E
Adjusting Needle Bar Height
The standard distance between the top of the needle eye and the upper surface of the hook
race should be in the range of 1.6 - 2.0 mm when the rotary hook meets the left side of the
needle in ascending travel of needle from its lowest position.
1. Remove the presser foot, Needle plate and
Bobbin holder .
2. Remove the face cover.
3. Turn the handwheel to raise the needle bar from
the lowest position until the tip of the rotary hook
meets with the left side of the needle .
Turn the handwheel to raise the needle bar further
1.8 mm.
4. Loosen the Setscrew.
5. Move the Needle bar up or down to align the
Top of the needle eye with the Upper surface
of the hook race .
6. Tighten the Screw. Be sure that the Groove
on the needle bar is facing right in the front.
7. Attach the Bobbin holder , Needle plate and
presser foot.
8. Attach the face cover.
Needle plate
Bobbin holder
Rotary hook
Needle
Needle bar
Top of the needle eye
Upper surface of hook race
A
B
C
D
E
F
G
H
B
A
A
B
Setscrew
E
H
F
G
D
1.6 - 2.0 mm
Hook race body
B
A
C
D
F
E
G
C
