Singer 72W19 - Securing the Attachment and Knives; Aligning Knife Edges with Piercer

Turn tlie Balance Wheel until the Piercer is at its highest
point and the Feed Dog is below the Throat Plate, and
have the Presser Foot rest on the Throat Plate.
350126C
234725
200062D
350I25F
234719
'20I706C
234720
221466
200)620
Fig. 20
Place the Attachment (with Thumb Nut 201634n, Fig. 19,
at the back end of slot) in position by inserting the Knives
in between the Presser Foot Shoes, and fasten the Attach
ment on the Arm Bracket 234722, Fig. 19, with the two
screws 200082!), Fig. 20.
Loosen the Pinch Screw in the Arm Bracket and raise
the Attachment on the Presser Bar Guide until the centre
of the Knife Fulcrum Stud 234724, Fig. 19, is W" above the
top of the Throat Plate. Place a scale or straight edge across
Attachment Arm 234721, Fig. 19, from front to back, and
line up parallel with the presser foot, the cutting edges of
the knives to be in line with the centre of the Piercer, then
tighten the Pinch Screw.
From the library of: Superior Sewing Machine & Supply LLC