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HQ Stitch
Technical Bulletin #0001
02/16/17
This bulletin is provided to give HQ Stitch technicians
and salespeople additional information on the HQ
Stitch 710 pre-tension assemblies. The goal is to
increase understanding of the pre-tensions to help
prevent poor bobbin winding and sewing results due
to improper threading of the pre-tension assemblies.
Back Ground
I
nformation:
The HQ Stitch 710 has two pre-tensions. Both are
used for bobbin winding. Only the front pre-tension
is used for sewing. If the machine is not threaded
properly the bobbin winder will not wind bobbins
firmly and the machine will not sew properly. Also
if someone improperly adjusts the bobbin winder
pre-tension assembly it will cause sewing and tension
issues.
Make sure to pull the thread to the front until it
clicks into the first sewing pre-tension and then back
around the left thread guide to the bobbin winding
pres-tension. Use both hands to pull the thread
firmly into the pre-tensions as shown in the winding
the bobbin section of the user Instruction Book.
You should feel a good pre-tension on the thread
when winding a bobbin or the machine is either not
threaded correctly or the pre-tension has been mal
adjusted by someone, perhaps inadvertently.
In the following picture the machine is threaded for
bobbin winding with the covers removed to show the
thread path clearly. It is important to note that the
thread is going through both the back bobbin winder
pre-tension and the front sewing pre-tension.
HQ Stitch 710 Pre-Tension Information
Preventing Bobbin Winding and Sewing Issues
The HQ Stitch 710 machine comes with the bobbin
winder pre-tension set from the factory to wind
a bobbin firmly and evenly from top to bottom.
Should one mistake the pre-tension assembly
screw as a top cover fastening screw and tighten or
loosen the screw, this may render the pre-tension
ineffective and cause poor sewing results.
When one mistakenly adjusts the pre-tensioner
assembly screw it will not only effect how evenly the
bobbin winds, but also how firmly the bobbin winds.