13
TO ADJUST THE TIMING OF THE NEEDLE
AND THE FEED DOG
Correct setting:
When the tip of the needle is at 2 - 4 mm above the needle plate in its downward motion, and lowered
presser foot, the top of the feed dog teeth should be level to the top surface of needle plate at their
rearmost position.
Before adjustment, check if needle bar height and feed dog height are correct.
To adjust:
1: Loosen set screw A and remove set screw B, remove feed base cover.
2: Set the stitch length “3” and differential feed dial at “1.0”.
3: Raise the presser foot and move the tip of the needle at 2 - 4 mm above the needle plate in its
downward motion by turning the handwheel.
4: Lower the presser foot, and loose two set screws C for main feed cam, two set screws D for
sub feed cam, and adjust the position of the sub feed cam and tighten set screws D.
*
Turn the sub feed cam to the direction E if the feed dog is lower than the surface of the needle plate.
*
Turn the sub feed cam to the direction F if the feed dog is higher than the surface of the needle plate.
5: Set the main feed cam to keep the clearance between the bushing and main feed cam to 1 mm, and
tighten two set screws C.
