Adjustment Of The Presser Foot Lift During The Sewing; Adjustment Of The Presser Foot Timing - Mitsubishi PLK-E1010 Technical Manual

7-6-3. Adjustment of the presser foot timing

[NOTE] The presser foot up and down movement during the sewing synchronizes with the
needle up and down movement.
With changing this synchronized timing to the sewing materials, the skip stitches can
be prevented or the seam tightness can be improved.
For example, the delay of the presser foot timing against the needle movement
prevents the skip stitches especially to the thin materials, and the advance of the
presser foot timing can improve the seam tightness especially to the thick materials.
(1) Remove the link cover(No.1).
(2) Loosen the setscrew "C" of the eccentric cam (No.2).
(3) Turn the sewing machine pulley by hand and stop the needle bar (No.3) at the lowest
position. At this stage, the setscrew "A" of the eccentric cam (No.2) is positioned right
beside the center line of the upper shaft. This is the standard position for the eccentric
cam (No.2).
(4) Loosen the setscrew "A" of the eccentric cam (No.2).
(5) Hold the eccentric cam (No.2) and turn the sewing machine pulley slowly by hand.
If turn the sewing machine pulley to the arrow direction "D", the presser foot timing against
the needle movement is delayed, and if turn the pulley to the opposite direction, the timing
of the presser foot is advanced.
(6) After the adjustment, tighten the setscrew "A" and "C" in turn with slightly pushing the
eccentric cam (No.2) to the arrow direction "E".
(7) Put the link cover (No.1) back on the original location.
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From the library of Superior Sewing Machine & Supply LLC • www.supsew.com
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