handi quilter HQ Stitch 710 - Page 6

3
The height of the pre-tension assembly determines
how evenly the bobbin winds top to boom. When
the screw is ghtened or loosened too much it also
causes the pre-tensioner assembly to release the
thread while winding a bobbin. With no pre-tension
on the bobbin it will wind too loose or spongy. Loose
bobbins cause signicant sewing and tension issues.
The small screw below right controls the bobbin ll
stopper. If one changes the stopper to the le it
will make the bobbin stop winding sooner, lling the
bobbin less. If it is moved to the right it will allow the
bobbin to winder later lling the bobbin more. This
might be inadvertently changed by someone when
trying to remove the top cover.
With the machine top cover removed one can see
the pre-tensioner screw lock nut. It should have
about two metal threads showing above the nut as
shown in the image below.
Visual Checks:
By looking at the pre-tension screw one can see if
the screw has been adjusted in/clockwise and is low
in the lile cover over the bobbin winder pre-tension
or out/counterclockwise to be high and pung
pressure up on the cover.
In the correct posion the screw head will be slightly
under the cover and not touching the boom surface
of the cover. It will also not be deep in the hole with
a big gap between the screw head and the cover.
The image below shows the relave posion of the
bobbin winder pre-tension assembly screw. It is just
below the cover, so the cover is not resng on it,
but not too far below. If your screw looks dierent
someone may have inadvertently adjusted it.
The image below shows the bobbin winder pre-
tension without the covers. Under the head of the
screw there is a small spring, the two metal pre-
tensioner plates and an e-clip. The e-clip suspends
the pre-tensioner assembly above the plasc top
cover surface.