Description
JK 789-2071600500 Presser Foot
A specific presser foot assembly designed for Jack overlock sewing machines, particularly for the E4 series and similar models like the JK-804D.
Primary Compatibility: Commonly used on Jack high-speed overlock machines, specifically the Jack E3, Jack E4, and Jack JK-804D models.
Function: Standard production foot for high-speed edge finishing and seaming.
How to Replace this Specific Foot
Release Tension: Raise the presser foot using the manual lever or knee lift.
Swing the Foot Out: Most Jack overlockers have a “swing-out” mechanism. Press the release lever located behind the presser bar to swing the foot assembly to the left, away from the needles.
Unhook and Swap: Slide the foot assembly off its mounting pin and slide the new foot on.
Align: Swing the foot back into place under the needles, ensuring it clicks securely.
Final Check: Carefully turn the handwheel by hand to confirm the needles and knives clear the foot without obstruction.

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