—
11
—
(3) Overturn the arm.
(4) Loosen the screw 1
(5) Turn the machine pulley to raise the needle bar
from its low position to the point that the needle rises 2.4
mm.
(6) Turn the rotary hook to align the rotary hook tip
with the center of the needle.
(7) Tighten the screw 1.
20)
Hook protection
In looping stroke position the needle must abut on
the hook protection 1 without being displaced.
Move needle in looping stroke position by pulley. In looping
stroke position the hook tip is at the level of the middle of the
needle. Press needle against hook protection 1 manually. The needle
should not touch the hook tip.
21)
Adjusting the needle and feed mechanism timing
(1) Horizontal feed direction
Set the feed adjustment dials to the maximum settings. Then
turn the machine pulley until the needle bar is at its lowest position.
Then adjust so that the needle and the feed dog do not move even when the reverse lever is moved up and down
at this time.
a. Remove the bed upper cover 1.
b. Set the feed adjustment dial to the maximum
settings.
c. Loosen the two screws 2.
d. Turn the machine pulley until the needle bar is at its
lowest position.
From the library of: Superior Sewing Machine & Supply LLC
