Singer 263-1 - ZIG-ZAG MOVEMENT; CENTRALIZING THE NEEDLE

ZIG-ZAG MOVEMENT
REMOVE SCREWS
REMOVE
PLATE
//
CENTERLINE
OF NEEDLE
BAR FRAME
VERTICAL POSITION OF
NEEDLE BAR AT HIGHEST POINT
LOOSEN BEVEL
GEAR SCREWS
TO TIME:
ROTATE
THIS GEAR
Fig. 16. Removing Oil Guide Plate
Needle should begin its zig-zag movement at the
moment
that needle point begins to rise from material.
Needle should complete
its zig-zag movement just be
fore needle point re-enters material.
During its zig-zag movement, needle should cross
over the vertical centerline of needle bar frame at the
same moment that needle bar is at its highest point
{see inset in Fig. 16).
To adjust, remove arm top cover from machine and
remove two screws and plate shown in Fig. 16. Loosen
REMOVE
SCREW
AND
PLATE
LOOSEN
SET SCREW
ROTATE ECCENTRIC
TO CENTRALIZE THE
NEEDLE AT ZERO BIGHT
Fig. 18. Centralizing the Needle
Fig, 17. Timing the Zig-Zag Movement
the two bevel gear screws, Fig. 17. Turn machine pul
ley over toward operator until
needle bar reaches its
highest point.
Rotate bevel gear as required to time the zig-zag
movement of needle bar (see Fig. 17).
Securely tighten
the two bevel gear screws and
check for binding or excessive play.
Replace oil guide plate and arm top cover.
CENTRALIZING THE NEEDLE
At zero bight, needle should penetrate center of
needle hole in throat plate. Needle must not contact
surface of throat plate at anytime.
To
correctly position needle, remove screw and
small
plate in top of machine head above needle bar
and loosen set screw, shown in Fig. 18.
Rotate eccentric on side of machine head, Fig. 18,
as required to centralize needle.
Securely tighten set screw and cover it with the
small platens shown in Fig. 18.
n
From the library of: Superior Sewing Machine & Supply LLC