Mitsubishi Electric PLK-J4040RH, Technical Manual

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6-5. Setting of the presser foot movement
It is not necessary to adjust the presser foot movement with operating the mechanical unit. Please
refer to the instructions OPERATION PANEL technical manual and change each setting in matching
with the sewing conditions.
(1) Adjustment of the presser foot height position:
Please refer to [8] Controlling the Presser Foot.
(2) Adjustment of the presser foot timing and stroke:
Please refer to [17] [Easy setting] 1-(6) [PF motion setting] .
(3) Adjustment of the presser foot lift:
Please refer to [17] [Easy setting] 3-(5) [PF rising position adjustment] .
6-6. Adjustment of the thread take up spring
6-6-1. Adjusting movable range of the thread take up spring
(1) To adjust the movable range of the thread take up spring (No.3) loosen the set screw (No.2) and turn
the whole thread take up spring unit (No.1).
(2) Adjust the thread take up spring (No.3) stroke to be 18 mm, which is standard stroke.
(3) After adjustment tighten the set screw (No.2).
<1>: Thread take up spring unit
<2>: Set screw
<3>: Thread take up spring
<2>
<3>
18 mm
<1>
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com