Adjusting The Upper Backup Pin (For Pre-Tension Assembly) (Premier Specifications) - Brother S-7300A Service Manual

7. ADJUSTMENTS
7-10-4.

Adjusting the upper backup pin (for pre-tension assembly) (Premier specifications)

135
1. Loosen the nut (1).
2. Set the thread trimmer solenoid (2) to the ON position,
3. Tighten the nut (1).
Touching
0.1 - 0.2mm
1019D
S-7300A
and then adjust the position of the backup pin (4) so that
the clearance between the tension release plate (3) and
the backup pin (4) is 0.1 to 0.2 mm.