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Brother LH4-B800E Service Manual Page 34

Electronic lockstitch button holer.
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y
q
e
!0
w
t
Remove the shoulder screw q, and then remove the tension release lever w and the spring e.
Remove the tension stud assembly r from the tension release lever bracket y.
Remove the tension nut u, and then remove the spring i and washer o from the tension stud ! 0 .
Remove the collar !1 , and then remove the tension discs !2 , tension disc presser !3 and tension disc presser !4 from
the tension stud ! 0 .
Remove the sub thread tension assembly ! 5 and tension release pin ! 6 from the arm.
Remove the two tension discs !6 , tension disc presser !7 , tension disc presser !8 , tension adjusting spring !9 , washer
@0 and tension nut @1 from the sub tension stud @2 .
Remove the screw @3 and the washer @4 , and then remove the thread take-up lever assembly @5 from the tension
release shaft @6 .
Remove the shoulder screw @ 7 , and then remove the washer @8 from the arm.
Remove the shoulder screw @ 9 and the washer # 0 , and then remove the lever # 1 from the adjusting lever # 2 .
Remove the two shoulder screws #3 , and then remove the adjusting lever #2 and the tension take-up lever #4 from the
lever link #5 .
r
!2
!3
!4
!1
0 0
i
o
u
!5
@2
LH4-B800E
2. DISASSEMBLY
!6
!7
!8
!9
0 0
@0
@1
@4
@3
@6
@7
@5
@8
#2
#1
@5
#0
@9
#3
#4
#5
!5
2 - 9

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