SINGER WSL216 - Manual (Page 10)

"I
ADJUSTING THREAD TENSIONS
ust right.
OVERLOOK STITCH
UPPER LOOPER THREAD should lie flat on the
top^side of fabric and lock with the lower looper
thread on the edge of the material.
LOWER LOOPER THREAD should lie flat on the
underside of fabric and lock with the upper
looper thread on the edge of the material.
NEEDLE THREAD acts as a 'safety stitch' and
should lie mainly on the top side dike a row of
normal straight sewing! on the left hand side of
the upper looper thread, and just visible in the
lower looper thread on the underside of the
fabric.
If threads do not appear as above, identify it and make the correction to obtain the correct tension,
referring to the illustrations below.
1. Upper looper thread pulled 2. Lower looper thread pulled
to under side. to top side.
3. Needle thread loose and
visible on under side of
fabric.
Adjustment;
Increase upper looper thread
tension and/or decrease lower
looper tension.
Adjustment:
Increase lower looper thread
tension and/or decrease upper
looper tension.
" . i.'O'
Lower
looper
thread
Adjustment:
Increase needle thread tension
and/or decrease either or both
looper threads.
DOUBLE CHAIN STITCH
* If threads do not appear as illustrated on the left, adjust tension as described below.
Just right.
NEEDLE THREAD should lie mainly on the top­
side (like a row of normal straight sewing) and
just visible on the underside of the fabric. Needle thread too loose.
Adjustment:
Increase needle thread tension.
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