24
MS5027PR
MECHANICAL ADJUSTMENT
NEEDLE CLEARANCE TO HOOK
TO CHECK:
1.
SET THE STITCH SELECTOR AT " ".
2.
REPLACE THE NEEDLE WITH THE TEST PIN (A).
2.
TURN THE HANDWHEEL SLOWLY BY HAND UNTIL THE NEEDLE BAR REACHES ITS LOWEST
POSITION.
3.
THE CLEARANCE BETWEEN THE TEST PIN (A) AND THE SHARP END (B) OF THE HOOK SHOULD
BE BETWEEN +0.05 (0.002") AND – 0.10 MM (-0.004").
ADJUSTMENT PROCEDURE:
1.
REMOVE THE BED COVER (SEE PAGE 8).
2.
LOOSEN THE SETSCREWS (C), (D) AND (E).
3.
TIGHTEN THE SETSCREW (C) TEMPORARILY.
4.
MOVE THE PLATE (F) IN EITHER DIRECTION, AS SHOWN BY THE ARROW UNTIL THE CLEARANCE
BETWEEN THE TEST PIN (A) AND THE SHARP END (B) OF THE HOOK BECOMES B0.05
AND –0.10 MM.
5.
TIGHTEN THE SETSCREWS (C), (D) AND (E) SECURELY.
(A)
(B)
(A)
(E)
(F)
(D)
(C)
+0.05 - -0.1MM
