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General| Brand | ELNA |
|---|---|
| Model | 683, 686 |
| Category | Sewing Machine |
| Language | English |
Instructions for removing the bulb cover, requiring unscrewing screw A.
Steps to remove the front panel, involving unscrewing screws and unhooking the panel.
Procedure to remove the extension table, involving loosening screws and removing the base plate.
Steps to remove the belt cover, including loosening screws and pushing the base plate.
Instructions for removing the back cover, involving dismantling other parts and removing axles.
Guidance on adjusting thread tension using dials and a pencil, with values for different thread types.
Procedure to adjust the needle bar height, requiring front panel and bulb socket removal.
How to adjust the feed dog lift by turning the feed dog cam after removing the back cover.
Instructions for adjusting needle bar timing by loosening screws on the needle bar cam.
Method to adjust feed dog height by loosening screw A and turning the feed dog holder pin.
Adjusting the distance between the left needle and the upper looper's extreme left position.
Procedure for adjusting the height of the lower looper by loosening screw B.
Checking and adjusting the synchronization by setting a clamp on the needle bar.
Adjusting the lower looper's distance from the left needle to 2.6 mm.
Adjusting the clearance between the lower looper and the needles to 0-0.03 mm.
Checking and adjusting the timing between the upper and lower loopers.
Adjusting the clearance between the lower and upper loopers to 0.1-0.2 mm.
Adjusting the needle guard distance from the needle by loosening screw B.
Adjusting the lower looper take up lever and thread guides based on specific measurements.
Checking and adjusting the upper looper take up lever as depicted in the diagram.
Procedure to adjust the presser bar height after removing the front panel and bulb socket.
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