22
0.3mm
SETSCREW(A)
PATTERN SELECTOR CAM
ZZ CAM
ADJUSTING
PLATE
RELEAS ARM
RELEASE ARM
MECHANICAL ADJUSTMENT
DISENGAGEMENT OF CAM FOLLOWER
TO CHECK:
TOO NARROW CLEARANCE BETWEEN THE CAM FOLLOWER AND THE TOP CONVEX OF
ZIGZAG CAM MAY OFTEN CAUSE DIFFICULTY IN TURNING OF THE PATTERN SELECTOR
DIAL, OR CAN NOT CORRECT PATTERN.
ADJUSTMENT PROCEDURE:
1.
SET THE PATTERN SELECTOR DIAL " ".
MODEL 2149SX, 2149, CJ24 PATTERN SELECT DIAL " ",WIDTH SELECTOR CONTROL
AT " 5 ".
2.
REMOVE THE FRONT COVER. (SEE PAGE 5.)
3.
PUT THE CAM FOLLOWER TO THE ZIGZAG CAM (STRAIGHT CAM), AND ALSO PUT
THE CAM FOLLOWER RELEASING ARM TO THE PATTERN SELECT CAM.
4.
LOOSEN THE SETSCREW.
5.
MOVE ADJUSTING PLATE IN THE DIRECTION OF ARROW UNTIL TO TOUCH TO THE
RELEASING ARM AND TIGHTEN SETSCREW.
NOTE: AFTER THIS ADJUSTMENT, CHECK THAT THE CLEARANCE BETWEEN THE
ZIGZAG CAM AND THE CAM FOLLOWER IS 0.3MM WHEN PUTTING THE CAM
FOLLOWER RELEASING ARM ONTO POSITION (A) OF PATTERN SELECT
CAM.
6.
ATTACH THE FRONT COVER.
