Adjusting The Machine Pulley Clearance In The Direction Of Thrust; Adjusting The Brake; Adjusting The Button Clamp Lift Amount - Brother BM-917B Instruction Manual

12-6. Adjusting the machine pulley clearance in the direction of thrust

0.5-0.8mm
<Bottom of sewing machine>

12-7. Adjusting the brake

12-8. Adjusting the button clamp lift amount

Push down
<Bottom of sewing machine>
13-4mm
At the sewing machine stopping position, adjust the clearance
between the machine pulley (1) and the clutch plate (2) to
0.5-0.8 mm.
1. Loosen the nut (3), and then turn the set screw (4) to
adjust the position of the ball presser plate (5).
2. Tighten the nut (3).
2011M
1. While pushing the clutch body (1) down, turn the machine
pulley (2) two or more complete turns in the direction of the
arrow.
2. Loosen the set screw (3) at the lower part of the clutch
body (1)
3. Turn the brake lever shaft (4) until the brake shoe (5) is at
its lowest position.
(The force of the brake will be increased.)
4. Tighten the set screw (3) to secure the brake lever shaft
(4).
* If the brake is grabbing at low temperatures and low
operating speeds and causing the machine to stop before
the correct stopping position, it might be caused by one of
the following problems. In such cases, raise the position of
the brake shoe (5) in step 3. above.
Work clamp lift amount is too small
!
Thread is not being trimmed
!
2012M
Adjust the distance from the top of the feed plate (1) to the
edge of the button clamp (2) to 13-14 mm.
1. Loosen the bolt (3), and then move the presser adjust plate
(4) up or down to adjust the distance.
2. Tighten the bolt (3).
2013M
BM-917B, 917C
12. STANDARD ADJUSTMENTS
20