Singer 281-5 - Setting Upper Knife; To Adjust Height of Knife; Sharpening the Upper Knife

SETTING UPPER KNIFE IN RELATI
TO THE THROAT PLATE CUTTING B,
(MACHINE 281-5)
Press down on lever shown in Fig. 37, lowering
knife.
Turn machine pulley until upper knife is at its
lowest position.
Loosen the two lock nuts behind screws shown
in Fig. 37, above upper knife. Move knife holder to
bring upper knife
as close as possible to cutting bar,
as shown. Securely tighten two screws and lock nuts,
previously loosened.
Loosen two
screws B, Fig. 37. Using a screwdriver
as shown, press throat plate cutting bar firmly against
upper knife, setting cutting bar parallel to blade of
knife, as shown in Fig. 37. Securely tighten two screws
B.
Check to make certain upper knife releases readily
when button on face olate is oushed IN.
lecheck needle locatior
•e-set, if necessary as i
Then check and re-set
TO ADJUST HEI
(MACHIN
urn machine pulley o\
i is at its lowest posit
37. Raise or lower the
he n shar
per ling the upp
er 1
be vel sh
ow
n in Fig. 3
8 is
ct enaaa
emi snt of upper
and
e hole
f page
ructed
upper
ws C,
red to
' 1/64
a bar.
PRESS
LOOSEN
LOCK N
BEHIND THESE
TWO SCREWS
From the library of: Superior Sewing Machine & Supply LLC