16
MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.1)
TO CHECK:
THE CLEARANCE BETWEEN NEEDLE AND THE SHUTTLE HOOK SHOULD BE BETWEEN
– 0.05 – +0.10MM.
IF NOT, MAKE THE FOLLOWING ADJUSTMENTS:
ADJUSTMENT PROCEDURE:
1.
OPEN THE FACE COVER PLATE.
2.
SET THE PATTERN SELECT DIAL “ ”, WIDTH SELECTOR DIAL “ 5 ”.
3.
LOOSEN THE SET SCREW (A), AND MOVE THE NEEDLE BAR SUPPORTER BACK OR
FORTH , TO GET A CLEARANCE BETWEEN –0.05 TO +0.10MM.
* WHEN THE CLEARANCE IS TOO WIDE, MOVE THE NEEDLE BAR SUPPORTER
TOWARD DIRECTION (B).
* WHEN THE CLEARANCE IS TOO NARROW, MOVE THE NEEDLE BAR SUPPORTER
TOWARD DIRECTION (C).
NOTE: AFTER THIS ADJUSTMENT, CHECK IF THE CLEARANCE BETWEEN THE
NEEDLE AND NEEDLE PLATE IS MORE THAN 0.15MM, AS SHOWN IN FIGURE
(D). IF NOT, ADJUST THE CLEARANCE BETWEEN THE NEEDLE AND THE
SHUTTLE HOOK BY USING THE ADJUSTMENT METHOD NO.2 ON PAGE 13.
AFTER READJUSTMENT, THE CLEARANCE BETWEEN THE NEEDLE AND
THE NEEDLE PLATE SHOULD BE MORE THAN 0.15MM.
SET SCREW A
DIRECTION C
DIRECTION B
NEEDLE BAR SUPPORTER
–0.05-+0.10MM
FIGURE D
CLEARANCE BETWEEN THE NEEDLE
AND THE NEEDLE PLATE IS
MORE THAN 0.15MM
