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General| Brand | Singer |
|---|---|
| Model | 628 |
| Category | Sewing Machine |
| Language | English |
Instructions for cleaning and lubricating specific Singer machine classes.
Specific cleaning and lubrication instructions for Class 626 models.
Steps for removing the arm top cover hinge assembly.
Steps for replacing the arm top cover hinge assembly.
Procedure for removing and reinstalling the rotating hook assembly.
Steps to correctly time the hook mechanism with the needle.
Adjusting the hook's position relative to the needle.
Removal, replacement, and adjustment of the bobbin push-button.
Steps for removing, replacing, and adjusting the bobbin driver.
Steps for taking apart the needle thread tension assembly.
Procedure for putting back together the needle thread tension assembly.
Fine-tuning the needle thread tension and related components.
Steps for removing and reinstalling the throat-plate position bracket.
Steps for removing the release mechanism components.
Steps for reinstalling the release mechanism components.
Fine-tuning the release mechanism for proper operation.
Procedures for removing and replacing the cam stack.
Steps to correctly time the cam stack assembly.
Adjusting index pins for the cam stack selectors.
Adjusting stops for the selector arms based on cam positions.
Removal and replacement of return springs for cam-selector-arm shafts.
Steps for removing and reinstalling the bight-amplitude and pattern selector.
Fine-tuning the bight-amplitude stop-plates for pattern selection.
Procedure for removing and replacing the needle-bar driving arm.
Adjusting the needle-bar driving arm for proper alignment.
Procedures for correcting chainstitch defects.
Verifying and setting the machine for chainstitching.
Checks and adjustments related to the chainstitch throat plate.
General machine adjustments for chainstitch performance.
Checking the assembly of eccentrics for proper function.
Procedure for removing and replacing the trademark medallion.
Proper storage and usage guidelines for the needle threader.
Steps for removing and reinstalling the needle threader.
Procedure for replacing the needle threading hook.
Diagram showing electrical connections for the motor, switch, and foot controller.
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