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General| Number of Threads | 4 |
|---|---|
| Maximum Stitch Length | 4 mm |
| Differential Feed | Yes |
| Free Arm | Yes |
| Presser Foot Pressure | Adjustable |
| Stitch Options | Overlock, Rolled Hem |
| Stitch Length | 4 mm |
| Differential Feed Range | 0.7 to 2.0 |
Procedure for adjusting the needle bar to its correct highest position.
Adjusting the throat plate for correct needle alignment with overedge slots.
Procedure for positioning and tightening the feed cam set screw.
Instructions for setting the needle bar eccentric cam on the rotating shaft.
Steps to adjust the lower looper cam based on feed cam position.
Guidance on setting the upper looper cam relative to the lower looper cam.
Procedure for aligning and setting the feed lifting cam with correct clearance.
Adjusting looper shaft levers and cam positions for proper operation.
Adjusting clearance between needle crank rod and eccentric cam.
Procedure for setting the correct height of the lower looper using a service gauge.
Instructions for timing the lower looper relative to the needle's position.
Causes and corrections for skipped stitches and overlock stitch issues.
Identifying and resolving issues related to needle and looper thread breakage.
Diagnosing and fixing problems with needle and looper interference.
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