Needle To Shuttle Hook Point Gap Adjustment; First Bar Tacking; Second Bar Tacking - Brother BAS-705 Instruction Manual

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5-5. Needle to shuttle hook point gap adjustment

2. Turn the pulley and align the shuttle hook point with the needle center. Loosen set screw q and turn the

eccentric connecting link stud w to adjust the needle to shuttle hook point gap to 0.01 - 0.08 mm.

NOTE: Check that the needle is protruding from above the needle plate.

1. Turn the drive shaft w of the lower shaft module q clockwise until the point of the shuttle hook of

the lower shaft module q is almost at the correct timing position.

2. Turn the upper shaft pulley to raise the needle bar from its lowest position until the lowest reference

3. Turn the drive shaft w of the lower shaft module q, and then loosen the set screw e and turn

the eccentric connecting link stud r to adjust so that the clearance between the needle and the

point of the shuttle hook is 0.01 - 0.08 mm when the point of the shuttle hook of the lower shaft module

q is aligned with the center of the needle

NOTE

Because the upper shaft and lower shaft operate independently of each other, you should check that

the needle does not interfere with the shuttle hook or the driver when the needle moves inside the

shuttle hook of the lower shaft module.

Also check that the needle does not interfere with the shuttle hook or the driver in the same way when

the lower shaft module is rotating. Interference can result in broken or bent needles.

5. STANDARD ADJUSTMENT (MACHINE HEAD)

0.01 0.08mm

BAS-705

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