Brother International BM-917B Instruction Manual - English - Page 27

Adjusting the button opener

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12. STANDARD ADJUSTMENTS 12-9. Adjusting the button opener Contact Carry out the following adjustment after carrying out the adjustment in "Adjusting the button clamp lift amount". Adjust so that button opener claw B (3) touches the button opener claw (4) at the same time as the presser lifter arm (1) touches the roller (2) when the machine pulley is turned to move the mechanism to the final stitch position. 1. Loosen the screw (5), and then move the claw adjusting plate (6) to adjust the transverse position. 2. Tighten the screw (5). Contact 2014M After making the above adjustment, adjust so that the clearance between button opener claw B (3) and surface (a) of the button opener claw (4) is 0-1 mm. 1. Loosen the bolt (7), and then move button opener claw B (3) up or down to adjust the position. 2. Tighten the bolt (7). 0-1mm 2015M Turn the machine pulley and check that the opening amount for the tip of the button clamp (8) is 2-3 mm at both left and right. * If the opening amount is not correct, repeat the "Vertical position" adjustment above. 2-3mm 2-3mm 2016M 21 BM-917B, 917C

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BM-917B, 917C
12. STANDARD ADJUSTMENTS
21
12-9. Adjusting the button opener
Carry out the following adjustment after carrying out the
adjustment in °Adjusting the button clamp lift amount±.
<Transverse position
>
Adjust so that button opener claw B (3) touches the button
opener claw (4) at the same time as the presser lifter arm (1)
touches the roller (2) when the machine pulley is turned to
move the mechanism to the final stitch position
.
1.
Loosen the screw (5), and then move the claw adjusting
plate (6) to adjust the transverse position.
2.
Tighten the screw (5).
<Vertical position>
After making the above adjustment, adjust so that the
clearance between button opener claw B (3) and surface (a)
of the button opener claw (4) is 0-1 mm.
1.
Loosen the bolt (7), and then move button opener claw B
(3) up or down to adjust the position.
2.
Tighten the bolt (7).
<Checking>
Turn the machine pulley and check that the opening amount
for the tip of the button clamp (8) is 2-3 mm at both left and
right.
*
If the opening amount is not correct, repeat the °Vertical
position± adjustment above.
Contact
2014M
Contact
2015M
0-1mm
2-3mm
2-3mm
2016M