Brother International RH-9820 Instruction Manual - English - Page 113

Replacing and adjusting the movable knife and fixed knife (for the lower thread and gimp) <-02 specifications>, 9-26-1. Replacing the movable knife and fixed knife, 9-26-2. Adjusting the cutting pressure

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9. STANDARD ADJUSTMENTS 9-26. Replacing and adjusting the movable knife and fixed knife (for the lower thread and gimp) 9-26-1. Replacing the movable knife and fixed knife 1. Remove the two screws (1), and then remove work clamp plate U (2). 2. Remove the nut (3). 3. Remove the shoulder screw (4), and then remove movable knife L (5) and movable knife R (6). 4. Install the new knives, and then install the shoulder screw (4). 5. Adjust the cutting pressure (see below), and then tighten the nut (3). 6. Install work clamp plate U (2). 0526B 9-26-2. Adjusting the cutting pressure Adjust the cutting pressure to the minimum pressure at which thread trimming can be carried out cleanly. 1. Loosen the nut (1). 2. Turn the shoulder screw (2) to adjust the cutting pressure. NOTE: If the shoulder screw (2) is tightened as far as it will go, the movable knives will no longer operate. Gradually loosen the shoulder screw (2) to a point where the movable knives turn smoothly. 3. Once adjustment is complete, securely tighten the nut (1). 0527B RH-9820 104

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9. STANDARD ADJUSTMENTS
RH-9820
104
9-26. Replacing and adjusting the movable knife and fixed knife (for the
lower thread and gimp) <-02 specifications>
9-26-1. Replacing the movable knife and fixed knife
1.
Remove the two screws (1), and then remove work clamp
plate U (2).
2. Remove the nut (3).
3. Remove the shoulder screw (4), and then remove
movable knife L (5) and movable knife R (6).
4.
Install the new knives, and then install the shoulder screw
(4).
5. Adjust the cutting pressure (see below), and then tighten
the nut (3).
6. Install work clamp plate U (2).
9-26-2. Adjusting the cutting pressure
Adjust the cutting pressure to the minimum pressure at which
thread trimming can be carried out cleanly.
1. Loosen the nut (1).
2.
Turn the shoulder screw (2) to adjust the cutting pressure.
NOTE:
If the shoulder screw (2) is tightened as far as it will go,
the movable knives will no longer operate. Gradually
loosen the shoulder screw (2) to a point where the
movable knives turn smoothly.
3.
Once adjustment is complete, securely tighten the nut (1).
0527B
0526B