Contents
Contents ............................................................................... Chapter - Page
12
Care and maintenance ............................................................................
12 - 1
12
.01
Cleaning ................................................................................................................... 12 - 1
12
.02
Lubricating the hook ................................................................................................ 12 - 2
12
.03
Filling the oil reservoir ............................................................................................. 12 - 2
12
.04
Lubricating the bevel gears ..................................................................................... 12 - 3
12
.05
Filling the oil reservoir of the thread lubricator ....................................................... 12 - 3
12
.06
Cleaning the air filter on the control box ................................................................. 12 - 4
12
.07
Oiling the edge trimmer -726/05 .............................................................................. 12 - 4
13
Adjustment ...........................................................................................
13 - 1
13
.01
Notes on adjusting ................................................................................................... 13 - 1
13
.02
Tools, gauges and other accessories for adjusting ................................................ 13 - 1
13
.03
Abbreviations ........................................................................................................... 13 - 1
13
.04
Adjusting the basic machine ...................................................................
13 - 2
13
.04.01
Adjusting the synchronizer ...................................................................................... 13 - 2
13
.04.02
Setting the machine configuration .......................................................................... 13 - 4
13
.04.03
Positioning the needle in the direction of sewing (1491 E1) ................................... 13 - 5
13
.04.04
Positioning the needle in the direction of sewing (1493E1) .................................... 13 - 6
13
.04.05
Positioning the needle across the direction of sewing ........................................... 13 - 7
13
.04.06
Limiting the needle bar frame (1491E1) .................................................................. 13 - 8
13
.04.07
Preadjusting the needle height ................................................................................ 13 - 9
13
.04.08
Hook-to-needle clearance, needle rise, needle height and needle guard ................ 13 - 10
13
.04.09
Bobbin case opener height ...................................................................................... 13 - 11
13
.04.10
Bobbin case opener stroke ...................................................................................... 13 - 13
13
.04.11
Feed wheel height ................................................................................................... 13 - 14
13
.04.12
Clearance between roller presser and feed wheel ................................................. 13 - 15
13
.04.13
Roller presser .......................................................................................................... 13 -16
13
.04.14
Automatic presser-foot lifter ................................................................................... 13 - 17
13
.04.15
Knee lever ................................................................................................................ 13 - 18
13
.04.16
Tension release ....................................................................................................... 13 -19
13
.04.17
Thread check spring ................................................................................................ 13 - 20
13
.04.18
Bobbin winder .......................................................................................................... 13 - 21
13
.04.19
Roller presser pressure ........................................................................................... 13 - 22
13
.05
Adjusting the edge trimmer -725/04 .........................................................
13 - 23
13
.05.01
Replacing the knife .................................................................................................. 13 - 23
13
.05.02
Knife height .............................................................................................................. 13 - 24
13
.05.03
Knife stroke ............................................................................................................. 13 - 25
13
.05.04
Knife motion ............................................................................................................ 13 - 26
13
.05.05
Knife position ........................................................................................................... 13 - 27