Question about Sewing Machines
I've already tried adjusting the needle but it hasn't helped the timing of the shuttle hook is badly off and needs adjusted but I can't find the right hex screw to do this
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Posted on Jan 02, 2017
SOURCE: Timing problem
You might have to look at loosening the set screws for the gear on the lower shaft that drives the hook driver gear . Loosen the screws, slide the gears apart, then adjust the hook so it is entering the scarf of the needle on the upstroke. Slide the gears togeather so they mesh again and it should be back in time. There are other factors though such as needle height adjustment which is done with the needle bar and hook and needle clearance (the distance between the needle and hook) which should be about .030. I'm a Bernina tech but many machines work the same principle. Good luck.
Posted on Aug 23, 2007
there is a screw on the side of the bobbin case, which needs to be turned to the left or counter clockwise to loosen the tension and also change the needle because a burr on the end will cause problems with bobbin thread
Posted on Dec 13, 2009
Refer to page 15 of the manual - http://www.singerco.com/accessories/manuals.html
Before changing the tension settings, be sure to thead the machine with the presser foot up as this also has a tremendous effect on the tension and formation of the stitch.
Posted on Apr 29, 2010
Take the foot off the machine
Remove the needle plate
Remove the feed dogs
rotate by hand until the needle is at the lowest position
continue rotating until the needle rises 2 mm
the hook assembly should be passing exactly by the scarf of the needle
if not loosen the two screws that secure the the hook assembly and rotate the hook assembly by hand until it is exactly at the scarf of the needle and the distance between the hook and the scarf is .1 mm (almost touching the needle)
tightened the two screws, replace the feed dogs and foot and it should sew perfectly
Posted on Sep 22, 2012
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Nov 13, 2011 | Bernina Activa 130
Aug 25, 2011 | Bernina Activa 140
Jul 05, 2011 | Bernina Activa 130
The bobbin thread tension
has already been adjusted at the factory for general use. For most
applications, no adjustment is needed.
When sewing with then
thread on thin fabrics, the thread tension may not be adjusted adequately with
the upper tension control dial. Therefore, the thread tension must be
adjusted according to the procedure described below.
If bobbin tension is too
loose and locks appear on the surface of the fabric, decrease the thread tension
by turning the dial to a lower number.
If the result is still
not satisfactory, then adjust the bobbin thread tension.
Increase the tension in the bobbin by turning the screw with a small screwdriver in a clockwise direction. However, do not turn the screw more than one full turn.
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