Adjustment Of Stitch Length ("Supermatic") - ELNA Supermatic Service Manual

12. Adjustment of Stitch Length ("Supermatic")

When the stitch length is correctly adjusted, a piece of cloth of medium thickness placed beneath the presser
foot must not move when the machine runs with the Stitch Length Lever set at position "0," or at the most only
advance very slightly.
To adjust (equalize) the stitch length, proceed as follows:
Attach presser foot to presser bar and insert needle.
Place a piece of cloth of medium thickness beneath presser foot and lower presser foot lever.
Set the Stitch Length Lever exactly at position "0."
Run the machine and check that the piece of cloth does not
move or only advances very slightly, in which case the stitch
length is correctly adjusted.
If this is not the case, adjust the stitch length as follows:
Loosen Set Screw in the feed control lever, which can be
accessed with a screw driver through an access hole in front
machine below the stitch length scale.
If Set Screw cannot be seen through the hole, move the
Stitch Length Lever until the screw can be reached through
the hole. Then return the Stitch Length Lever to "0."
Run the machine and adjust the Feed Control Key until the
piece of cloth no longer moves.
Be careful not to press too hard against the feed control key
when adjusting it, because you are liable to move the stitch
length lever away from position "0" on the scale.
Tighten the Set Screw after this adjustment.
Place a piece of medium thickness cloth beneath the presser foot and run the machine for 10 seconds. The cloth
should not move at all or at the most very slightly forward when the Stitch Length Lever is set at position "0."
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