Tabla de contenido
3-1.
Work Table ............................................ 3
3-2.
Motor (7270) ......................................... 4
....................................... 05
............................................. 06
5-1.
Installing the oil pan ............................ 7
5-2.
Installing the machine head ............... 7
5-3.
5-4.
Adjusting the knee lifter ...................... 9
5-5.
Installing the belt ................................. 10
5-6.
Installing the bobbin winder ............... 10
5-7.
Installing the belt cover ....................... 11
5-8.
Installing the cotton stand .................. 14
5-9.
Ground Wire Connections (7270) ....... 14
5-10. Lubrication ............................................ 15
rotating direction .................................. 16
5-12. Test operation ....................................... 17
6-1.
Installing the needle ............................ 18
6-2.
Removing the bobbin case ................. 19
6-3.
Winding the lower thread ................... 20
6-4.
Threading the lower thread ................ 22
6-5.
Threading the upper thread ................ 23
6-6.
Adjusting the stitch length .................. 24
......................................................... 25
7-1.
Sewing .................................................. 26
CONTENTS
...................... 01
..................... 02
.................... 03
........... 18
SB-7270, SB-7280 (English)
7-2.
Backtacking ........................................... 26
...................................... 27
8-1.
Adjusting the thread tension .............. 27
8-2.
8-3.
after thread trimming (7280) .............. 30
9-1.
Adjusting the presser foot height ...... 32
9-2.
9-3.
Adjusting the needle bar height ......... 35
9-4.
mechanism timing ............................... 36
9-5.
hook timing ........................................... 38
9-6.
9-7.
Adjusting arm thread guide R ............ 41
9-8.
forward and backtack stitch lengths ........ 42
9-9.
Adjusting the tension release timing ....... 43
and presser foot ................................... 44
lubrication amount ............................... 47
9-12. Adjusting the oil pump ....................... 47
10-1. Replacing the fixed knife ..................... 50
10-2. Replacing the movable knife ............... 51
................................................... 52
........................................... 72
................... 31
................ 50
................................ 56
Tabla de contenido
