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Needle Bar And Thread Take-up Mechanisms - Brother HE-800B Service Manual

Electronic direct drive lockstitch button holer.
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6. ASSEMBLY

6-10. Needle bar and thread take-up mechanisms

*
Apply the grease specified by Brother (Power Knock WB2 from JX Nippon Oil & Energy) in the places indicated by
Insert the needle bar (9) into the
arm, and then install the needle
bar bracket while clamping the
slide blocks (12) and (16).
Tighten so that the
needle bar moves
smoothly.
Tighten so that
there is no play
in the needle
bar
bracket
assy.
When the needle bar (9) is at
its maximum zigzag position,
tighten the set screws (22) and
(24) against the needle bar
bracket assembly (17), and
then loosen them again by
about 1/4 of a turn each. Then
tighten the nuts (23) and (25).
75
Tighten so that the
thread take-up moves
smoothly
play.
Tighten so
that there is
no play in
the needle
bar bracket
assy.
When the needle
bar
(9)
is
at
its maximum zigzag
position, tighten the
set screws (22) and
(24)
against
the
needle bar bracket
assembly (17), and
then loosen them
again by about 1/4
of a turn each. Then
tighten the nuts (23)
and (25).
HE-800B
with
no
1.0 to 2.0 mm
Screw stop side
.
0.5 to 1.5 mm
0715D

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