You would need to adjust the tension screw so the tension is looser than usual. However, remember to mark the setting BEFORE making any adjustments so you will know where to return the original setting.
Bobbin Tension How and Why Tension is Adjusted
Understanding Bobbin Tension
Understanding Thread Tension Threads
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SOURCE: Using Pfaff 130 to sew leather, needle won't pick
This machine really isnt quite designed for leather. What has happened is your hook to needle timing is out.
When you sew through thick materials, a
lot of machines have issues where the needle sticks in
the fabric but all the internal parts shift and this causes the hook
to needle timing to go out. The begging signs of this is skipping
stitches. You will have to have you local independent sewing store do
this adjustment for you
Hope that helps,
Chris
SOURCE: I am sewing pillows that are fairly heavy fabric
is it possible that the needle is in backwards?
if not then it is possible the machine is out of time & needs to be serviced
SOURCE: i have an omega necchi model 6147 sewing machine and i need a down load manual
here's a link for a manual, it's a hard copy, I looked for a
downloadable copy & I couldn't find one, if you don't want the
hard copy, I'll give you 2 sites to email & ask them about a manual
for the machine
http://www.sewingpartsonline.com/instruction-manual-necchi-6147.aspx
here are the sites to email
sewvacdoctor.com
a1sewingmachines.com
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