Brother S-7300A - Checking after Adjustment

7. ADJUSTMENTS
S-7300A
137
7-10-6. Checking after adjustment
<Checking when the thread trimmer solenoid is OFF>
1. Set the thread trimmer solenoid (1) to the OFF position.
2. The tension release bar (3) of the main tension discs (2)
should be touching the flat part (non-cam part) of the
tension release plate (4).
3. The thread take-up spring stopper (5) should not be
protruding from surface [A] in the illustration.
(Premier
specifications only)
4. When the disc (7) on the inside of the pre-tension (6) is
pushed in as far as it will go, the clearance between the
discs should be 0.5 mm or more
. (Premier specifications
only)
<Checking when the thread trimmer solenoid is ON>
1. Set the thread trimmer solenoid (1) to the ON position.
2. The tension release bar (3) of the pre-tension (2) should
be touching the flat part (non-cam part) of the tension
release plate (4). (Premier specifications only)
3. The opening amount for the main tension discs (5) should
be 0.6 mm or more.
Touching
Flat part
Cam part
0.5mm or more
Touching
Flat part
Cam part
0.6mm or more
Thread trimmer solenoid OFF position
Thread trimmer solenoid ON position
1024D
Push in
1025D