Table Of Contents - Brother T-8420B Instruction Manual

1. NAMES OF MAJOR PARTS................
2. MACHINE SPECIFICATIONS ..............
3. TABLE AND MOTOR...........................
4. INSTALLATION ...................................
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 ....
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
CONTENTS
6. SEWING ...............................................
1
6-1. Sewing............................................................23
2
6-2. Backtacking ....................................................23
3 6-3. Sewing condensed stitches ............................24
7. THREAD TENSION ..............................
4
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 ...........................................
14 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 ....................
10. TROUBLESHOOTING .......................
T-8420B, 8450B, 8720B, 8750B
23
25
28
33
34