Brother BAS-600 - Adjusting the Gap between the Rotary Hook and the Needle Plate; Adjusting the Needle Bar Lift Stroke and the Needle Bar Height

3. Adjusting the gap between the rotary hook and the needle plate
* The gap between the rotary hook 0 and the needle plate@ should be 0.6-0.9 mm. Loosen the two screws
@ and raise or lower the rotary hook 0 to adjust the gap.
4. Adjusting the needle bar lift stroke and the needle bar height
1" 1 -1. 5mm
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\1 J2.4mm
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(1) Needle bar lift stroke
* The rotary hook point should be aligned with the needle center when the needle is 2.4 mm above its down
position. Loosen the two screws 0 and turn the rotary hook @ to adjust the stroke.
~ (2) Needle bar height
* The gap between the needle hole top and the rotary hook point should be 1-1.5 mm when the rotary
hook
point is aligned with the needle center. Loosen the screw @ and raise or lower the needle bar to
adjust the height.
5. Adjusting the gap between the rotary hook and the bobbin case opener
* The gap between the rotary hook 0 and the
bobbin case opener 8 should be 0.2 mm when
the bobbin case opener @ is shifted all the way
in the direction of the arrow. Loosen the screw
@)and shift the bobbin case opener 8 right or
left to adjust the gap.
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From the library of: Superior Sewing Machine & Supply LLC