Harbor Freight Tools 91500 Assembly And Operating Information page 13

Overlock sewing machine two needle - four thread
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To Adjust The Thread Tension:
1.
Adjust thread tension to suit the type of material and size of the thread used. The
Tension Dials (55A) on the Sewing Machine are a one-turn system. By turning
the Tension Dials up toward the + mark the thread tension becomes tighter. By
turning the Tension Dials down toward the - mark the thread tension becomes
looser. Thread tension can be adjusted independent of each other. For example,
the Left Looper thread can be adjusted to be tighter or looser than the Right
Looper thread. (See Figure G.)
To Change Threads:
1.
To change threads, first cut each thread near the Thread Spool (not included).
Remove the old spool and replace with a new one. Tie the end of the new thread
to the end of the old one, using a small knot that will pass easily through the
machine. Raise the Presser Foot Spanner (9B). Turn the Tension Dials (55A)
down toward the - mark until the Dial stops and pull the thread out so that the tie
knot of the thread extends from the Presser Foot Assembly (1B). When inserting
the thread through the Needle (26B) eye, stop the tie knot before the Needle eye.
Then, cut the thread and pass it through the Needle eye. (See Figure G and
Figure J.)
PRESSER FOOT
SPANNER
(9B)
FIGURE J
SKU 91500
OPERATING THE SEWING MACHINE
PAGE 13
PRESSER FOOT
ASSY.
(1B)

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