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General| Brand | Singer |
|---|---|
| Model | 620 |
| Category | Sewing Machine |
| Language | English |
Instructions for lubricating the top internal components of the sewing machine.
Instructions for lubricating the bottom internal components of the sewing machine.
Procedures for removing the rotating hook assembly from the machine.
Procedures for installing the rotating hook assembly back into the machine.
Steps to set the correct timing for the rotating hook mechanism.
Adjusting the hook's position relative to the needle for proper operation.
Steps for removing and installing the cam stack assembly.
Procedure for correctly timing the cam stack assembly.
Steps to remove and replace the bight-amplitude and pattern selector.
Adjusting the stop-plates for the bight-amplitude selector.
Procedures to correct defects in chainstitching operations.
Verifying and setting the machine for correct chainstitching.
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