Brother EF4-V41 - Lz1 Adjusting the under Looper, the Movable Needle Guard, and Needle Guard (F)

Dimension H
S (Standard)
H (High
lift).
E (Extra high lift)
V41, V61, V71
10±0.2 mm 10.9±0.2 mm
12±0.2mm
H
H
H
V72, V91, V92
V51, V81, V82
~
11.4±0.2 mm
12±0.2mm
(3) Turn the pulley to move the needle bar to its highest position. Refer to the above table, and adjust the
clearance between the needle tip and the needle plate top by moving the needle bar up or down.
(4) Remove the needle, the needle plate, the main feed dog, and the differential feed dog.
~ Adjusting the under looper, the movable needle guard,
and
needle guard (F)
[Adjusting the under looper]
0-0.5 mm overlap
(1) Insert an adjustment reference needle.
NOTE: Before adjustment, position the movable knife so that it is behind the under looper point.
(2) Turn the pulley to move the under looper 0 all the way to the left. Loosen the bolt @. Adjust the
clearance between the under looper 0 point and the center of the needle so that it is 3.8 mm. Adjust
the position of the under looper holder so that the under looper 0 point and the needle overlap 0-
0.05 mm when they align.
(For twin-needle sewing machine)
Insert the right needle. Turn the needle bar until the under looper 0 point touches each needle evenly.
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From the library of: Superior Sewing Machine & Supply LLC