12
MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.1)
TO CHECK:
THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE SHOULD BE –0.05 –+0.10MM.
IF NOT, MAKE AN ADJUSTMENT AS FOLLOWS:
ADJUSTMENT PROCEDURE:
1.
REMOVE THE FACE COVER. (SEE PAGE 4.)
2.
SET THE PATTERN SELECT DIAL " ".
MODEL 2149SX, 2149, CJ24 PATTERN SELECT DIAL " ", WIDTH SELECTOR CONTROL
AT " 0 ".
3.
LOOSEN SET SCREW (A), AND MOVE THE NEEDLE BAR SUPPORTER TO ARROWS
TO GET CLEARANCE BETWEEN –0.05 TO +0.10MM.
* WHEN CLEARANCE IS TOO WIDE, MOVE THE NEEDLE BAR SUPPORTER TO
DIRECTION (B).
* WHEN CLEARANCE IS TOO NARROW, MOVE THE NEEDLE BAR SUPPORTER TO
DIRECTION (C).
NOTE: AFTER THIS ADJUSTMENT, CHECK IF THE CLEARANCE BETWEEN NEEDLE
AND NEEDLE PLATE IS MORE THAN 0.15MM AS SHOWN IN FIGURE (D).
IF NOT, ADJUST THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE
BY USING METHOD OF ADJUSTMENT NO.2 IN PAGE 13 AFTER READJUST THE
CLEARANCE BETWEEN NEEDLE AND NEEDLE PLATE MORE THAN 0.15MM.
4.
ATTACH THE FACE COVER.
SET SCREW A
DIRECTION C
DIRECTION B
NEEDLE BAR SUPPORTER
–0.05-+0.10MM
FIGURE D
CLEARANCE BETWEEN NEEDLE AND
NEEDLE PLATE IS MORE THAN
0.15MM
