Brother International RH-9820 Instruction Manual - English - Page 108
Brother International RH-9820 Manual
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9. STANDARD ADJUSTMENTS 9-25. Replacing and adjusting the movable knife and fixed knife (for the lower thread and gimp) 9-25-1. Replacing the movable knife and fixed knife 0519B 1. Remove the two screws (1), and then remove work clamp plate U (2). 2. Remove the three screws (3), and then remove the movable knife (4). 3. Install the new movable knife, and then tighten the three screws (3). 4. Remove the two screws (5), and then remove the fixed knife (6). 5. Install the new fixed knife (6), fixed knife plate spring (7), fixed knife plate spring U (8) and thread guide plate (9) on top of each other in that order, and then tighten the two screws (5). * After replacing the knives, carry out the adjustments from "9-25-2. Adjusting the cutting pressure" to "9-25-5. Adjusting the thread handler". Once adjustment is complete, install work clamp plate U (2). 0520B 99 RH-9820