Brother BC800 - Page 5

ii
Needle plate A ASSY disassembly ...........................................................................................2 - 20
Spring removal .................................................................................................................................2 - 20
Inner rotary hook bracket assembly removal ...................................................................................2 - 20
Feed dog removal .............................................................................................................................2 - 21
Vertical adjuster screw assembly removal .......................................................................................2 - 21
Outer rotary hook removal ...............................................................................................................2 - 21
Shaft supporter removal ...................................................................................................................2 - 21
Feed bar removal .............................................................................................................................2 - 22
Needle plate supporter shaft B removal ...........................................................................................2 - 22
Feed arm A assembly removal .........................................................................................................2 - 23
Feed arm B ASSY disassembly ................................................................................................2 - 23
Feed adjuster assembly removal ......................................................................................................2 - 24
Feed adjuster disassembly .........................................................................................................2 - 24
Vertical lever removal .....................................................................................................................2 - 24
FPM holder assembly removal ........................................................................................................2 - 25
FPM disassembly .......................................................................................................................2 - 25
Timing pulley D removal .................................................................................................................2 - 25
Lower shaft assembly removal ........................................................................................................2 - 26
Lower shaft bushing removal ..........................................................................................................2 - 26
Needle-presser unit .........................................................................................2 - 27
Threader hook assembly .................................................................................................................2 - 28
LED lamp left assembly removal ....................................................................................................2 - 28
BH switch assembly removal ..........................................................................................................2 - 28
Thread take-up lever and needle bar crank removal ........................................................................2 - 28
Thread take-up lever link removal ...................................................................................................2 - 29
Needle bar assembly removal ..........................................................................................................2 - 29
Needle bar ASSY disassembly ...................................................................................................2 - 29
Needle holder assembly removal .....................................................................................................2 - 30
Needle holder ASSY disassembly .............................................................................................2 - 31
Presser bar removal ..........................................................................................................................2 - 32
Z zigzag lever assembly removal .....................................................................................................2 - 32
Z zigzag lever disassembly .......................................................................................................2 - 33
Z zigzag camp removal ....................................................................................................................2 - 33
Shaft bushing removal .....................................................................................................................2 - 33
Presser foot lifter removal ................................................................................................................2 - 33
Thread release lever removal ...........................................................................................................2 - 34
Lock nut removal .............................................................................................................................2 - 34
Z pulse motor removal .....................................................................................................................2 - 34
Presser switch assembly removal ....................................................................................................2 - 34
3. Assembly .............................................................................................3 - 1
Main parts ..........................................................................................................3 - 2
Base plate rubber attachment .............................................................................................................3 - 3
Thread guide assembly attachment ....................................................................................................3 - 3
Bobbin presser attachment .................................................................................................................3 - 3
Spool pin attachment .........................................................................................................................3 - 4
Bobbin winder assembly attachment .................................................................................................3 - 5
Bobbin base assembly attachment .....................................................................................................3 - 6
Bobbin base ASSY assembly .......................................................................................................3 - 6
Plate spring attachment ......................................................................................................................3 - 6
Needle-presser unit attachment ..........................................................................................................3 - 7
Upper shaft assembly attachment ......................................................................................................3 - 8
Feed unit assembly attachment ..........................................................................................................3 - 9
Upper shaft and lower shat phase matching ......................................................................................3 - 9
Tension pulley assembly attachment ...............................................................................................3 - 10