Index
Contents ...............................................................................Chapter - Page
11.05.17 Zeroing the vibrating presser ................................................................................... 11 - 19
11.05.18 Torsion spring of the reverse feed lever .................................................................. 11 -20
11.05.19 Torsion spring of the differentiation regulating shaft ............................................... 11 - 21
11.05.20 Feeding motion of the bottom feed dog .................................................................. 11 - 22
11.05.21 Lifting motion of the bottom feed dog..................................................................... 11 -23
11.05.22 Drive belt in the gearbox housing ............................................................................ 11 -24
11.05.23 Hook bearing bracket............................................................................................... 11 -25
11.05.24 Hook lubrication ....................................................................................................... 11 -26
11.05.25 Pre-adjusting the needle height ............................................................................... 11 -27
11.05.26 Needle rise, hook-to-needle clearance and bobbin case positioning-finger ............. 11 -28
11.05.27 Final adjustment of the needle height ..................................................................... 11 -29
11.05.28 Bobbin case opener position ................................................................................... 11 -30
11.05.29 Bobbin case opener motion..................................................................................... 11 -31
11.05.30 Bottom-feed dog height........................................................................................... 11 -32
11.05.31 Clearance between presser foot and needle plate .................................................. 11 -33
11.05.32 Vibrating-presser feed and connecting lever ........................................................... 11 -35
11.05.33 Vibrating-presser stroke........................................................................................... 11 -37
11.05.34 Vibrating-presser lifting motion ................................................................................ 11 -38
11.05.35 Vibrating-presser feeding motion............................................................................. 11 -39
11.05.36 Feeding motion difference....................................................................................... 11 -40
11.05.37 Vibrating presser and presser foot pressure............................................................ 11 -41
11.05.38 Thread diverter pin................................................................................................... 11 -42
11.05.39 Needle-thread tension release (machines without -900/..) ...................................... 11 -43
11.05.40 Limiting the knee lever stroke ................................................................................. 11 -44
11.05.41 Knee lever play ........................................................................................................ 11 -45
11.05.42 Bobbin winder.......................................................................................................... 11 -46
11.06 Adjusting the thread trimmer -900/51 .................................................................. 11 -47
11.06.01 Pre-adjusting the control cam .................................................................................. 11 -47
11.06.02 Roller lever............................................................................................................... 11-48
11.06.03 Pawl ......................................................................................................................... 11 -49
11.06.04 Engaging solenoid.................................................................................................... 11 -50
11.06.05 Release lever ........................................................................................................... 11-51
11.06.06 Engaging lever ......................................................................................................... 11 -52
11.06.07 Thread catcher position and cutting test ................................................................. 11 -53
11.06.08 Control cam (final adjustment) and retaining spring................................................. 11 -54
11.06.09 Needle-thread tension release................................................................................. 11 -55
11.06.10 Removing and refitting the control unit ................................................................... 11 -57
11.06.11 Synchronizer ............................................................................................................ 11-58
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