Adjusting top thread tensions, Adjusting bobbin tensions – SINGER W1407 User Manual

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ADjUSTING TOP THREAD
TENSIONS

Probably the most important control on

your machine is this one that regulates

your top thread tension.

There are many reasons for having to
reset your tension. The best tension for

one fabric may not be correct for

another. The required tension depends
upon the stiffnessof the fabric, thickness

being sewn, as well as the type of stitch

you are making.

It is best to test the stitching on a scrap

of the fabric you are using before starting

to make a garment. Use the straight

stitch function as shown at the right.

ADJUSTING BOBBIN TENSIONS

Bobbin tension requires adjusting less

frequently than the upper thread ten

sion.

If the stitch is satisfactory but the seam

is puckered, it may be necessary to

loosen the tension on both the top and

bottom threads. Be sure to balance

them.

When adjusting the tension on the bobbin

case, make slight adjustments with a

screw driver.

An ideal straight stitch will have
threads locked between the two
layers of fabric.

Upper thread too tight

------ Ifr-

------ 1 ) ----

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Decrease Tension

Upper thread too loose