Tabla De Contenido - Brother DT3-B291 Manual De Instrucciones

1. NAMES OF MAJOR PARTS ...................................
2. MACHINE SPECIFICATIONS ..................................
3. OPTIONAL PARTS ..................................................
4. MOTOR ....................................................................
5. INSTALLATION .......................................................
5-1. Processing the work table ............................... 10
5-2. Installing the machine head ..........................
5-3. Installing the belt ............................................
5-4. Installing the belt cover ................................... 13
5-5. Installing thread guide U ...............................
5-6. Installing the presser lifter pedal .................... 14
5-7. Ground wire connections ............................... 15
5-8. Installing the cotton stand .............................
5-9. Lubrication ......................................................
5-10. Checking the machine pulley
rotating direction ............................................
6. PREPARATION BEFORE SEWING .......................... 20
6-1. Needles ............................................................ 20
6-2. Installing the needle ........................................ 21
6-3. Threading ........................................................
6-4. Using the needle thread cooler ...................... 25
6-5. Adjusting the stitch length .............................
7. SEWING .................................................................. 28
7-1. Sewing speed .................................................
7-2. Sewing .............................................................. 29
8. ADJUSTING THE THREAD TENSION ................... 31
8-1. Thread tension ................................................. 31
8-2. Adjusting the presser foot pressure .............
9. CLEANING ............................................................... 34
9-1. Daily cleaning procedures .............................
9-2. Changing the lubrication oil
(every three months) ......................................
9-3. Applying grease (every three months) .........
9-4. Replacing the oil filter (every six months) .... 38
10. STANDARD ADJUSTMENTS ............................... 39
10-1. Removing parts which need to be
removed before adjustment ..........................
10-1-1. Face plate ..........................................
10-1-2. Presser foot ........................................ 41
10-1-3. Needle plate ...................................... 42
10-1-4. Feed dog ............................................ 43
10-2. Adjustments ..................................................... 44
10-2-1. Needle thread take-up position ........ 44
10-2-2. Thread guide position ...................... 45
10-2-3. Middle thread guide position ........... 45
10-2-4. Looper thread take-up position ........ 46
10-2-5. Looper thread guide position
adjustment ........................................
10-2-6. Adjusting the height of the
needle bar .......................................... 48
10-2-7. Adjusting the ratio between the
lower feed amount and needle
feed amount ...................................... 49
10-2-8. Needle bar rocker crank position ....
10-2-9. Needle bar forward/back
position .............................................
CONTENTS
10-2-10. Adjusting the needle and looper
1
3
10-2-11. Adjusting the needle and looper
5
10-2-12. Adjusting the needle and looper
7
9
10-2-13. Adjusting the needle guard
11
10-2-14. Adjusting the retainer position ........ 60
12
10-2-15. Adjusting the feed dog position ...... 63
10-2-16. Adjusting the needle plate
14
10-2-17. Adjusting the presser foot
15
11. INSTALLING COMMERCIALLY-AVAILABLE
16
PARTS ................................................................... 71
11-1. Synchronizer (Option) ...................................
19
11-2. Lapper .............................................................. 74
11-3. Needle plate ..................................................... 75
11-4. Puller and other parts ....................................
12. TROUBLESHOOTING ........................................... 76
22
26
29
33
35
37
37
40
40
47
50
51
clearance ............................................ 52
timing ................................................. 55
positions ............................................ 57
position .............................................
position .............................................
mechanism ........................................ 69
59
67
72
75