SINGER 7412 - Manual (Page 18)

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THREADING THE TOP THREAD
A. Raise the presser foot lifter. Always be sure to raise the
presser foot lifter before threading the top thread. (If the
presser foot lifter is not raised, correct thread tension
cannot be obtained.)
IMPORTANT:
To verify that the machine is threaded properly in the
tension discs, do this simple check:
1.) With the presser foot raised, pull the thread towards
the back of the machine. You should detect only a
slight resistance and little or no deflection of the
needle.
2.) Now lower the presser foot and again pull the thread
towards the the back of the machine. This time you
should detect a considerable amount of resistance
and much more deflection of the needle. If you do
not detect the resistance you have miss-threaded the
machine and need to re-thread it.
B. Turn the hand wheel toward you until the needle is in its
highest position.
C. Thread the machine with your left hand while firmly gripping
the thread with your right hand in the following order as
illustrated.
* Guide the thread through thread guide (1), and then pull
it into the pre-tension guide (2).
* Pull the thread into the tension discs, passing the thread
to the left of plate (2). Then guide the thread to the
bottom of the groove.
* Guide the thread into the thread guide (3).
* Pass the thread through the eye of the needle (4) from
front to back. (See following page for instructions on
operation of the Automatic Needle Threader.)
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