Brother BAS-600 - Standard Adjustment (Mechanical Portion); Adjusting the Upper and Lower Shaft Timing; Adjusting the Needle and the Rotary Hook Timing

STANDARD ADJUSTMENT· (MECHANICAL PORTION)
1. Adjusting the upper and lower shaft timing
Reference line J
1. Remove the needle.
2. Tilt the machine head and remove the timing belt 0.
3. Align scale A on the pulley with the red index. r-'
4. Without moving the upper shaft, align the arrow on the lower belt@ with the arm bed reference line and
remount
the timing belt.
5. Return the machine head to its original position and attach the needle.
2. Adjusting the needle and the rotary hook timing
Needle
Rotary hook point
--~~-
Max.O.OSmm
1. The gap between the needle and the rotary hook point should be 0.05 mm. Loosen the screws ®, ® and
©,and shift the rotary hook base 0 right or left to adjust the gap.
2. The gap between the inside of the rotary hook base 0 and the lower shaft gear @ should be
approximately
0.2 mm. Shift the lower shaft gear@ right or left to adjust the gap.
* Be sure that the screw stops do not change when the screws© are tightened in the gear @.
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From the library of: Superior Sewing Machine & Supply LLC