9
MC450e
Adjusting the Needle Bar Height
1. Remove the face cover (refer to page 1).
2. Remove the presser foot, needle plate and bobbin
holder. Attach a #11 needle.
3. Turn the hand wheel to raise the needle bar from the
lowest position until the tip of the rotary hook meets
the right side of the needle.
4. Loosen the setscrew on the needle bar supporter.
Move the needle bar up or down to set the distance
between the top of the needle eye and the upper
surface of the rotary hook at 1.6 to 2.0 mm.
5. Tighten the setscrews. Be sure that the groove of the
needle is facing right in the front.
6. Attach the bobbin holder, needle plate and presser
foot. Replace the needle with the #11 needle.
7. Attach the face cover.
The distance between the top of the needle eye and the upper surface of the hook race should be 1.6
to 2.0 mm when the tip of the rotary hook meets the right side of the needle in the ascending travel
form the lowest position.
1.6 to 2.0 mm
Upper surface of the hook race
Top of the needle eye
Rotary hook
Setscrew
Needle bar
Needle plate
Bobbin holder
Tip of the rotary hook
#11 needle
Groove
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