Singer 281-21 - NEEDLE GUARD ADJUSTMENT; Stringing the Needle Guard

BOBBIN-
CASE
HOLDER
STRINGING THE NEEDLE GUARD
HOOK POINT
-NEEDLE GUARD
Correct
Relationship
LARGE
NEEDLE
BOBBIN
CASE
HOLDER
Incorrect:
Stringing Required
HOOK
POINT
NEEDLE
GUARD
BOBBIN
Fig. 30. Needle Guard at Loop-Taking Time
POSITION
FINGER
SLOT
POSITION
FINGER
FEED BAR
HOOK POINT
NEEDLE GUARD
Incorrect
Too Much Metal
Removed from Guard
3 SMALL
SCREWS
The needle guard on the bobbin cose holder, shown
in Figs. 30 and 33, should prevent needle from con
tacting hook or bobbin cose at any time. See Fig. 30
(A) for correct relationship. When large needles (size
20 or larger) are used, needle guard may deflect needle
too for toward left resulting in damage to needle. See
Fig. 30 (B). To avoid this, it may be necessary to
string the needle guard in accordance with the follow
ing instructions.
Remove needle, slide plate, throat plate and bobbin
cose from machine.
Turn machine pulley until feed bar, Fig. 31, is at
its highest point.
Remove position finger shown in Figs. 29 and 31.
Turn hook body to position shown in Fig. 31 and
remove three small screws and hook section shown.
Turn bobbin cose holder until position finger slot
on thread guard is at location shown in Fig. 32. Slip
bobbin case holder out of hook body.
Remove a slight amount of metal from needle guard
by rubbing needle guard along a 1/8 inch strip of very
fine emery cloth,
as shown in Fig. 33.
EXTREME CARE should be taken to avoid removal
of too much metal as this may permit needle to strike
hook. See Fig. 30 (C). Bobbin case holder will then
need replacement.
Clean bobbin case holder thoroughly before re
placing it in hook body.
Replace all ports in reverse order instructed for
removal.
HOOK POINT
1^ ' HOOK SECTION
Fig. 31. Hook Section
HOOK BODY
POSITION FINGER
SLOT ON THREAD
GUARD
BOBBIN CASE
HOLDER
Fig. 32. Bobbin Cose Holder
GUARD
l/8"#320 EMERY
Fig. 33. Stringing Needle Guard
13
From the library of: Superior Sewing Machine & Supply LLC