Needle Bar And Thread Take-Up Mechanisms (2) - Brother HE-800A Service Manual

3-18. Needle bar and thread take-up mechanisms (2)

4245Q
1. Insert the needle bar (2) into the needle bar bracket assembly (1), and then pass it through the needle bar
clamp (3) as shown in the illustration.
2. Set the projection of the needle bar clamp (3) into the groove in the needle bar guide (4), and then install to the
needle bar bracket assembly (1) with the two bolts (5) so that the needle bar (2) moves smoothly.
3. Insert the slide block (6) of the needle bar bracket assembly (1) into the zigzag lever shaft (7).
4. Insert the slide block (8) of the needle bar clamp (3) into the thread take-up lever set (9).
5. Insert the needle bar bracket assembly (1) into the arm while inserting the slide block (6) and (8), and then
install it.
6. Pass the wick (11) of the needle bar bracket support shaft (10) through the arm.
7. Insert the needle bar bracket support shaft (10) and then secure it by tightening the set screw (12) so that there
is no play in the needle bar bracket assembly (1).
8. Insert the needle bar bracket guide (13) into the arm, and then secure it by tightening the set screw (14) so that
there is no play in the needle bar bracket assembly (1).
9. Install the set screw (15) and nut (16) to the stopper (15), and then install it to the arm with the two screws (18).
10.Install the set screw (19) and nut (20) to the arm.
11.When the needle bar (2) is at its maximum zigzag position, tighten the set screws (16) and (19) against the
needle bar bracket assembly (1), and then loosen them again by about 1/4 of a turn each. Then tighten the
nuts (17) and (20).
12.Insert the needle bar thread guide (21) into the needle bar (2).
HE-800A
3. ASSEMBLY
4246Q
4247Q
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