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6.
CONTENTS
. NAMES OF MAJOR PARTS ....................
1
MACHINE SPECIFICATIONS un
2
WORK TABLE AND MOTOR un
3
3-1.
Work Table ss
3
3-2.
Installing the motor to the work
(B775) ..
ei
4-6.
Connecüna the cords 18776) .
ve
4-7.
Connecting the air tubes (B776) ......... 17
4-8.
Adjusting the air pressure (B776) ...... 18
4-9.
Installing the cotton stand .
4-10. Lubrication
4-11. Checking the machine pulley
rotating direction
4-12. Installing the head lamp (B776)
PREPARATION
BEFORE SEWING ........... 23
5-1.
Removing the bobbin case ....
. 23
5-2.
Winding the lower thread
5-3.
Threading the lower thread
5-4
Installing the needle
5-5.
Threading the upper thread ...
5-6.
Adjusting the stitch length
SEWING (B776)
6-1.
6-2.
6-3.
Using the control box..
Operating the treadle
Sewing ...
. THREAD TENSION ..................
e
39
7-1.
Adjusting the thread tension .............. 39
7-2.
Adjusting the presser foot pressure .. 41
7-3.
Adjusting the feed roller pressure ..... 41
CLEANING
STANDARD
ADJUSTMENTS
.................. 44
9-1.
Adjusting the thread tension
Spring TTT
46
9-2.
Adjusting arm thread guide R ............ 48
9-3.
Adjusting the presser foot height ...... 49
9-4.
Adjusting the needle bar height ......... 51
9-5.
Adjusting the needle and rotary
hook timing...
sé
9-6.
Adjusting the thread wiper (B776) ..... 56
9-7.
Thread trimmer cam timing (B776) ... 57
9-8.
Adjusting the tension release lever
position (B776) ........... cessere
61
9-9.
Adjusting the upper shaft and
rotary hook lubrication amount ..
9-10. Synchronizer adjustment (B776) .
9-11. Replacing the knives (B776)..
a
9-12. Adjusting the treadle (B776) .
65
9-13. Setting the DIP switches (B776) ..
67
9-14. Adjusting the knife position (B776).... 73
10.INSTALLING OPTIONAL PARTS
ICC
77
10-1. Installing the knee switch nenn
77
10-2. Installing the air blow device ............. 85
10-3. Connecting the pedal for standing
Operations sercaunannenarsanensenensenunnernennsnennn nen 89
11.TROUBLESHOOTING ....oinssasorsosse resenseer 92
DB3-B775, B776 (English)
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