Singer 271K - Needle Bar Height

NEEDLE BAR HEIGHT
When the needle bar is at its lowest point,
the distance between the bottom of the needle
bar and the top surface of the needle plate should
be - - -
.437 inch on Machines 271K1, 271K2
and 271K201.
-477 inch on Machine 271K3
.497 inch on Machine 271K4
To adjust, insert a 5/32 inch socket wrench
through access hole provided for it in machine
arm and loosen socket screw on connecting stud,
as
shown in Fig. 67. Raise or lower needle bar,
as required and securely retighten socket screw.
NEEDLE PLATE CENTERED (FRONT to REAR)
Needle should rise and fall at an equal dis
tance from front and rear edges of needle slot
in needle plate, as shown in Fig. 68.
To adjust, set needle correctly in needle bar
and hand ratchet machine until clamp check is
out of way of access to needle plate screws,
shown in Fig. 68. Loosen screws and move needle
plate forward or backward, as required, to center
needle (front to rear) in needle slot.
Securely retighten needle plate screws.
CLAMP-CHECK CENTERED (LEFT to RIGHT)
To avoid thread fraying on edges of clamp-
check, center the clamp-check in relation to the
needle plate as follows • - -
With machine in "stop" position, loosen set
screw in center of lower half of clamp plate
block,
shown in Fig. 69.
Move block and clamp-check to right or left
OS required.
Ra ise clamp-check by hand to insure proper
seating.
Recheck position and reset when necessary.
Securely retighten set screw.
26
CONNECTING
STUD
NEEDLE BAR
AT LOWEST
POINT
SHOULD BE
.477" on 271 K3
.497" on 271 K4
.437" on others
I
5/32"
SOCKET WRENCH
"M. LOOSEN
^SOCKET
SCREW
2.RAISE OR
LOWER
NEEDLE BAR
AS REQUIRED
3. TIGHTEN
SOCKET
SCREW
T
ABOVE NEEDLE PLATE
Fig. 67. Needle Bar at Correct Height
LOOSEN
TO ADJUST
KNIFE SLIT
LOOSEN
TO ADJUST
MOVE NEEDLE PLATE
FORWARD OR BACKWARD
TO CENTER THE NEEDLE
IN NEEDLE SLOT
O)
CENTER
LINE
needle SLOT
/
CLAMP CHECK
Fig. 68. Centering the Needle Plate
(Front to Rear)
MOVE BLOCK
TO CENTER THE
CLAMP CHECK
OVER NEEDLE
PLATE
LOOSEN
SET SCREW^
TO ADJUST
CLAMP CHECK
Fig. 69. Centering Clamp-Check
(Left to Right)
From the library of: Superior Sewing Machine & Supply LLC