ii
Thread guide cover removal .........................................................................................................2 - 18
Thread release holder assy. F removal ........................................................................................2 - 18
PF-F SW assy. removal .................................................................................................................2 - 19
Thread guide shutter removal ......................................................................................................2 - 19
Tension releaser link removal .......................................................................................................2 - 19
Plate assembly removal .................................................................................................................2 - 20
Thread guide removal ...................................................................................................................2 - 20
AT pulse motor removal ................................................................................................................2 - 20
Thread tension gear removal ........................................................................................................2 - 20
Tension disk removal .....................................................................................................................2 - 21
Thread take up spring removal ....................................................................................................2 - 21
Thread guide wire removal ...........................................................................................................2 - 21
Bobbin winder mechanism ...............................................................................2 - 22
Bobbin winder cover removal .......................................................................................................2 - 23
Bobbin base disassembly ...............................................................................................................2 - 23
Bobbin presser removal .................................................................................................................2 - 23
Bobbin winder assembly removal ................................................................................................2 - 24
BW holder supporter removal ......................................................................................................2 - 24
BW-F SW assy. removal ................................................................................................................2 - 24
BW shaft holder assembly removal ..............................................................................................2 - 25
Bobbin winder shaft stopper removal ..........................................................................................2 - 25
Rotary hook drive mechanism / Feed and bobbin mechanism / Cutter assy. location
diagram ............................................................................................................2 - 26
Leadline guide holder removal. ....................................................................................................2 - 27
Thread cutter module removal .....................................................................................................2 - 27
Feed module removal ....................................................................................................................2 - 27
Lower shaft A assy. removal .........................................................................................................2 - 27
Joint removal ..................................................................................................................................2 - 28
Timing pulley D removal ...............................................................................................................2 - 28
Lower shaft bushing removal .......................................................................................................2 - 28
Needle bar, presser mechanism / Upper shaft mechanism .............................2 - 29
Upper shaft removal ......................................................................................................................2 - 30
Pulley removal ................................................................................................................................2 - 30
Upper shaft pulley removal ...........................................................................................................2 - 30
Tension pulley assembly removal .................................................................................................2 - 30
Needle-presser module removal ...................................................................................................2 - 31
Wire assy. removal .........................................................................................................................2 - 31
Plate spring removal ......................................................................................................................2 - 32
Needle-presser module ...................................................................................2 - 33
BH switch assy. removal ................................................................................................................2 - 34
Presser feed holder assy. removal ................................................................................................2 - 34
Adjusting plate assy. removal .......................................................................................................2 - 34
Adjusting plate assy. disassembly .................................................................................................2 - 34
Spring-Z removal ...........................................................................................................................2 - 35
Zigzag adjusting nut removal .......................................................................................................2 - 35
Lever A spring / spring / needle bar hook stand spring removal ..............................................2 - 35
Presser dial removal ......................................................................................................................2 - 35
Lock nut removal ...........................................................................................................................2 - 36
Release guide plate removal ..........................................................................................................2 - 36
Needle bar assy. removal ...............................................................................................................2 - 36
Needle bar assy. disassembly ........................................................................................................2 - 37
Release lever removal ....................................................................................................................2 - 37
Needle holder shaft block removal ...............................................................................................2 - 37
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