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Needle Bar Rising ( Outer rotary hook timing )
Standard： When the needle bar rises 2.9 to 3.3 mm from its
lowest position, the rotary hook point aligns with the
right side of needle.
1. Go to the test mode #4 and move the
needle bar to the left.
2. Turn off the machine.
3. Turn the pulley until the needle meets the
rotary hook point.
4. Check the 2 screws (#1), then turn the pulley
and loosen them.
5. Lower the needle bar to its lowest position.
6. Raise the needle bar 2.9 mm to 3.3 mm.
7. Loosen the screw (#2).
8. Turn the outer rotary hook by hand until
the rotary hook point aligns with the right
side of needle.
9. After adjustment, tighten the 3 screws.
May use Upper Pulley
on latest machines
44
#2
#1
#1
2.9-3.3mm
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