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
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