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Rotary Hook Mechanism - Brother LH4-B800E Service Manual

Electronic lockstitch button holer.
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3. ASSEMBLY

3-15. Rotary hook mechanism

e
q
r
t
y
r
(Screw stop side)
w
(A)
(B)
Install the rotary hook joint assembly q to the lower shaft, and then secure it by tightening the set screw w. Tighten
the set screw r so that the lubrication port (A) of the hook e and the lubrication port (B) of the rotary hook joint
assembly q are aligned. Then adjust the needle clearance and timing. Install the rotary hook holder t with the two
screws y.
LH4-B800E
3 - 31

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