Feed and rotary module ...................................................................................3 - 23
Removal of Feed dog .......................................................................................................................3 - 24
Removal of Spring ...........................................................................................................................3 - 25
Removal of Z pulse motor ...............................................................................................................3 - 26
Removal of Spring ...........................................................................................................................3 - 26
Removal of Feed bar ........................................................................................................................3 - 27
Removal of Drop knob ....................................................................................................................3 - 28
Removal of Shaft supporter .............................................................................................................3 - 29
Removal of Timing pulley D ...........................................................................................................3 - 29
Removal of Lower shaft assy ...........................................................................................................3 - 31
Removal of Feed arm A assy ...........................................................................................................3 - 31
Removal of Feed arm B assy ...........................................................................................................3 - 32
Needle-presser module ...................................................................................3 - 33
Removal of BH switch assy .............................................................................................................3 - 35
Removal of Shaft assy .....................................................................................................................3 - 37
Removal of PF switch assy ..............................................................................................................3 - 38
Removal of Presser bar ....................................................................................................................3 - 39
Removal of Z zigzag cam ................................................................................................................3 - 40
Removal of Rubber ..........................................................................................................................3 - 40
Removal of Z pulse motor ...............................................................................................................3 - 41
Removal of Lock nut .......................................................................................................................3 - 41
Removal of Shaft bushing ................................................................................................................3 - 41
Main parts ........................................................................................................3 - 42
Assembly of Rear cover assy ...........................................................................................................3 - 43
iii