Brother International T-8420B Instruction Manual - English - Page 6

CONTENTS 1. NAMES OF MAJOR PARTS 1 2. MACHINE SPECIFICATIONS 2 3. TABLE AND MOTOR 3 4. INSTALLATION 4 4-1. Installation 5 4-2. Lubrication 11 4-3. Checking the machine pulley rotating direction .... 13 4-4. Alarm display (Semi dry type 13 5. PREPARATION BEFORE SEWING .... 14 5-1. Installing the needle 14 5-2. Removing the bobbin 15 5-3. Winding the lower thread 16 5-4. Installing the bobbin 17 5-5. Threading the upper thread 19 5-6. Adjusting the stitch length 21 5-7. Using the knee lifter 21 5-8. Corner sewing method (T-8450B, 8750B)...... 22 5-8-1. To stop the needle bars (right and left 22 5-8-2. Number of stitches: quick-reference guide 22 6. SEWING 23 6-1. Sewing 23 6-2. Backtacking 23 6-3. Sewing condensed stitches 24 7. THREAD TENSION 25 7-1. Adjusting the thread tension 25 7-2. Adjusting the presser foot pressure 26 7-3. Adjusting the thread take-up amount 27 8. CLEANING 28 8-1. Daily cleaning procedures 28 8-2. Lubricating via the oil cover (every 6 months 29 8-3. Applying grease - When the GREASE indicator illuminates (Semi dry type 30 9. ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT 33 10. TROUBLESHOOTING 34 T-8420B, 8450B, 8720B, 8750B