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General| Brand | UnionSpecial |
|---|---|
| Model | 39500 Series |
| Category | Sewing Machine |
| Language | English |
Explains machine style numbering and lists available models (QW, RG, RH).
Details how this catalog supplements previous versions and its scope.
System for tracking machine repairs and identifying problematic units.
Recommends parts inventory to reduce downtime and improve efficiency.
Lists suggested minimum spare parts for the 39500 QW model.
Advice on optimal machine speed based on usage and stitch length.
Instructions for oil type, capacity, filling, and regular maintenance.
Covers needle selection, thread stand setup, and general threading path.
Specific steps for threading lower looper, upper looper, and needles.
How to control thread tensions and position the purl for optimal stitch.
Adjusting thread tension, presser foot pressure, and feed eccentrics.
Setting needles, lower looper, front needle guard, and upper looper.
Setting feed dogs for proper material feeding and height.
Setting the lower and upper knives for trimming.
How stitch length is determined by feed eccentrics and how to adjust.
Setting the presser foot and initial steps for starting operation.
Guidance on identifying and ordering Union Special repair parts.
Information on Union Special's worldwide sales and service facilities.
