Checking After Adjustment - Brother S-7300A Service Manual

7. ADJUSTMENTS
7-10-6.

Checking after adjustment

Thread trimmer solenoid OFF position
Touching
Flat part
Thread trimmer solenoid ON position
Flat part
137
Cam part
Push in
1024D
0.5mm or more
Touching
Cam part
0.6mm or more 1025D
<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
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.
S-7300A
.
(Premier specifications