Disengagement Of Cam Follower - Kenmore 385.15108200 Service Manual

SEWING MACHINE DIV. 20 MODEL 385. 15108200
MECHANICAL ADJUSTMENT
DISENGAGEMENT OF CAM FOLLOWER
TO CHECK:
A CLEARANCE THAT IS TOO NARROW BETWEEN THE CAM FOLLOWER AND THE TOP
CONVEX OF ZIGZAG CAM, MAY OFTEN CAUSE DIFFICULTY IN TURNING THE PAI'TERN
SELECTOR DIAL. THIS CAN ALSO CAUSE UNINTENDED PA'I-rERNS TO BECOME
SELECTED, OR MAKE ZIGZAG STITCH IN STRAIGHT STITCH SE'I-FING.
ADJUSTMENT PROCEDURE:
1. REMOVE THE FRONT COVER. (SEE PAGE 10.)
2. MOUNT THE PATFERN SELECTOR DIAL, AND SET IT AT PATFERN" Ci _ ". (5TH
CAM AS VIEWED FROM (C).)
3. TURN THE HANDWHEEL TO PUT THE CAM FOLLOWER ONTO THE TOP CONVEX OF
THE ZIGZAG CAM.
4. LOOSEN THE SET SCREW.
5. PUSH THE CONVEX PART OF THE CAM FOLLOWER RELEASINGARM, IN THE
DIRECTION OF THE ARROW UNTIL THE CAM FOLLOWER RELEASINGARM
TOUCHES POSITION (A) OF THE PATTERN SELECT CAM, AND THEN, TIGHTEN THE
SET SCREW.
NOTE: AFTER THIS ADJUSTMENT, CHECK THAT THE CLEARANCE BETWEEN THE
ZIGZAG CAM AND THE CAM FOLLOWER IS 0.3MM (WHEN THE CAM
FOLLOWER RELEASING ARM HAS MOVED TO POSITION (B)). THIS CAN BE
DONE BY TURNING THE PATTERN SELECTOR DIAL COUNTERCLOCKWISE.
THE CLEARANCE BETWEEN THE CAM FOLLOWER AND THE ZIGZAG CAM
SHOULD BE 0.3MM.
6. REMOVE THE PAl-FERN SELECTOR DIAL, AND MOUNT THE FRONT COVER.
CAM FOLLOWER
ZIGZAG CAM
PATTERN SELECT CAM
CONVEX PART
POSITION B
24
POSITION A