Check the sewing machine thread from the spool to the sewing needle
to make sure the sewing machine thread routes are correct through all of
the machine's guides. Make all necessary corrections.
Now get a
piece of scrap or test material about two feet in length. Place the
material under the sewing needle the same way as in a normal sewing
process.
The purpose of this first step is for allowing a few
stitches to seat in the material only. Mainly just, sew approximately
four to five stitches through the material. Repeating this step later
will not be necessary.
Knowing what to look for before starting
the second step will be important, so the sewing machine thread tension
will reach proper adjustment. In addition, this prevents any damage to
the machine or material.
In the second step below, look for,
while sewing, if a slight noticeable pull to the left occurs as the
material passes the sewing needle. When a slight noticeable pull to the
left occurs, the machine tension is at proper adjustment. Do not tighten
the machine's thread tension knob any further, to prevent any harm to
the machine.
Now to begin the second step, turn the machine's
tension adjustment knob, one quarter of a turn clockwise. This will
tighten the sewing thread tension. Now sew approximately a dozen
stitches through the material.
As the material passes the sewing
needle, watch to see if the material has a slight noticeable pull to the
left. No slight noticeable pull to the left suggests improper sewing
thread tension. Turn the sewing machine tension adjustment knob one
quarter of a turn clockwise again, to tighten the sewing thread tension,
and then sew another dozen stitches.
Keep repeating the process
of quarter turn increments clockwise with the sewing machine's tension
adjustment knob. Then sewing a dozen stitches, until a slight noticeable
pull to the left occurs as the material passes the sewing needle. Once
the material does this, the sewing machine thread tension has reached
proper adjustment.
1.- Look to see whether the thread loops appear on the fabric back side. If this is the case, the tension on your sewing machine is too loose.
2.- Check to see if your fabric is puckering on the front side when you sew. If this happens, then your tension is too tight.
3.- Adjust your needle thread tension with your machine threaded and your presser foot pedal down.
4.- Turn your thread tension dial as needed. If you increase the number on your tension thread dial, you will be increasing the tension on your sewing machine. If you are lowering the number on your tension thread dial, you will be decreasing the tension on your machine.
5.- Clean your thread tension with a small piece of paper or a toothpick. Slide the toothpick or paper between the discs to remove any tangles of thread.
This and other parts details could find in the
Singer 5830 Parts ManualHope this helps.