Pfaff 421E1 - Page 5

Contents
Contents...............................................................................Chapter - Page
12.02 Filling the oil reservoir .............................................................................................. 12 - 2
12.03 Lubricating the bevel gears...................................................................................... 12 - 2
12.04 Cleaning the air filter on the control box .................................................................. 12 - 3
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 Positioning the needle in the direction of sewing .................................................... 13 - 4
13.04.03 Setting the machine configuration ........................................................................... 13 - 5
13.04.04 Positioning the needle across the direction of sewing............................................. 13 - 6
13.04.05 Limiting the needle bar frame .................................................................................. 13 - 7
13.04.06 Preadjusting the needle height ................................................................................ 13 - 8
13.04.07 Hook-to-needle clearance, needle rise, needle height and needle guard ................. 13 - 9
13.04.08 Balancing weight...................................................................................................... 13 -11
13.04.09 Bobbin-case-opener eccentric and retaining lug....................................................... 13 - 12
13.04.10 Bobbin case opener position.................................................................................... 13 - 13
13.04.11 Feed wheel .............................................................................................................. 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 thread trimmer -900/61 .................................................................. 13 -23
13.05.01 Preadjusting the control cam ................................................................................... 13 - 23
13.05.02 Roller lever............................................................................................................... 13 - 24
13.05.03 Engaging solenoid.................................................................................................... 13 -25
13.05.04 Actuating lever......................................................................................................... 13-26
13.05.05 Connecting rod......................................................................................................... 13 -27
13.05.06 Thread-catcher height .............................................................................................. 13 -28
13.05.07 Thread-catcher position............................................................................................ 13 - 29
13.05.08 Knife pressure.......................................................................................................... 13-30
13.05.09 Bobbin-thread clamp spring ..................................................................................... 13 - 31
13.05.10 Control cam final adjustment ................................................................................... 13 -32
13.05.11 Manual cutting test .................................................................................................. 13 -33
13.05.12 Tension release (during trimming process) .............................................................. 13 -34
13.05.13 Stop positions .......................................................................................................... 13-35
13.06 Parameter adjustments ......................................................................................... 13 -36
13.06.01 Adjusting positions................................................................................................... 13 - 36
13.06.02 Adjusting the counter............................................................................................... 13 - 37
13.06.03 Adjusting speeds ..................................................................................................... 13 -37