Brother International BM-917B Instruction Manual - English - Page 28

Adjusting the fixed knife and movable knife

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12. STANDARD ADJUSTMENTS 12-10. Adjusting the fixed knife and movable knife Install and adjust the fixed knife (1) so that the distance between the knife tip and the needle center is approximately 2 mm. 1. Remove the feed plate and needle plate. 2. Loosen the screw (2), and then move the fixed knife (1) to adjust its position. 3. Tighten the screw (2). Approx. 2mm 2017M 2018M 0.5−1mm At the sewing machine stopping position, adjust the distance between the tip of the projection (a) on the movable knife (3) to the edge of the blade of the fixed knife (1) to 0.5-1 mm. 1. First adjust the position of the fixed knife (1). (Refer to above.) 2. Loosen the nut (4), and then move the connecting lever (5) to adjust the distance. 3. Tighten the nut (4). 4. Install the feed plate and the needle plate. 2019M BM-917B, 917C 22

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BM-917B, 917C
12. STANDARD ADJUSTMENTS
22
12-10. Adjusting the fixed knife and movable knife
<Fixed knife position>
Install and adjust the fixed knife (1) so that the distance
between the knife tip and the needle center is approximately
2 mm.
1.
Remove the feed plate and needle plate.
2.
Loosen the screw (2), and then move the fixed knife (1) to
adjust its position.
3.
Tighten the screw (2).
<Movable knife position>
At the sewing machine stopping position, adjust the distance
between the tip of the projection (a) on the movable knife (3)
to the edge of the blade of the fixed knife (1) to 0.5-1 mm.
1.
First adjust the position of the fixed knife (1).
(Refer to above.)
2.
Loosen the nut (4), and then move the connecting lever (5)
to adjust the distance.
3.
Tighten the nut (4).
4.
Install the feed plate and the needle plate.
Approx. 2mm
2017M
0.5
−
1mm
2018M
2019M