Adjusting The Longitudinal Feed Arm Assembly Position; Adjusting The Trimmer Driving Arm Assembly Position - Brother HE-800B Service Manual

7. ADJUSTMENT
[CAUTION]
Before adjusting the upper thread trimming, check the home position of the work clamp (P) motor. (Refer to "7-2-4. Work
clamp (P) motor home position".)

7-12-1. Adjusting the longitudinal feed arm assembly position

7-12-2. Adjusting the trimmer driving arm assembly position

1776B
1. Turn on the power and set the sewing machine to the home position. Then press the THREAD key to lower the work clamp.
2. Check that the overlap between the stopper (2) fixed to the trimmer driving arm assembly (1) with the bolt and the stop plate
(4) of the upper thread trimmer lever set (3) is 1 mm.
3. If adjustment is necessary, loosen the bolt (5) and move the trimmer driving arm assembly (1) back and forward to adjust.
97
Aligned
4320Q
HE-800B
1. Turn on the power and set the sewing machine to the
home position. Then press the THREAD key to lower
the work clamp.
2. Check that the slot at the bottom of the upper thread
trimmer lever set (1) is aligned with the edge of the
.
washer (2)
3. If they are not aligned, loosen the bolt (3) and move
the longitudinal feed arm assembly (4) back and forth
to adjust.
1777B