MECHANICAL ADJUSTMENT
DISENGAGEMENT OF CAM FOLLOWER (NO.1)
CORRECT SETTING
TOO NARROW CLEARANCE BETWEEN THE CAM FOLLOWER AND THE TOP CONVEX OF
ZIGZAG CAM MAY OFTEN CAUSE DIFFICULTLY IN TURNING THE PATTERN SELECTOR DIAL OR
CANNOT SELECT CORRECT PATTERN.
TO ADJUST
1.
SET THE PATTERN SELECTOR DIAL AT “
” AND THE STITCH WIDTH DIAL AT “ 5 ”.
(STITCH LENGTH DIAL AT ANY POSITION.)
2.
REMOVE THE FRONT COVER. (SEE PAGE 5.)
3.
PUT THE CAM FOLLOWER TH THE ZIGZAG CAM (STRAIGHT CAM), AND ALSO PUT THE
CAM FOLLOWER RELEASING ARM TO THE PATTERN SELECTOR CAM.
4.
LOOSEN THE SET SCREW.
5.
MOVE ADJUSTING PLATE INT THE DIRECTON OF ARROW UNTIL TOUCH THE THE
RELEASING ARM AND TIGHTEN SET SCREW.
* AFTER ADJUSTMENT, CHECK THAT THE CLEARANCE BETWEEN THE ZIGZAG CAM AND
THE CAM FOLLOWER IS ABOUT 0.3 MM WHEN PUTTING THE CAM FOLLOWER
RELEASING ARM ONTO POSITION (A) OF PATTERN SELECT CAM.
6.
MOUNT THE FRONT COVER.
* CHECK THE ADJUSTMENT OF THE NEEDLE MOVEMENT FOR STRAIGHT STITCH.
20
CAM FOLLOWER
CAM FOLLOWER RELEASING ARM
SET SCREW
ADJUSTING PLATE
PATTERN SELECT CAM
ZIGZAG CAM
(STREIGHT CAM)
POSITION A
CAM FOLLOWER RELEASING ARM
