Here's a quick tutorial for how to thread a Singer Heavy Duty Sewing machine. I'm using my Singer 4423 heavy duty sewing machine as an example. I'll show you how to wind the bobbin on the Singer 4423, how to install the top-load bobbin, how to thread the upper thread, how to use the automatic needle threader that comes on many of the Singer heavy duty sewing machines, and lastly, how to pull up the bobbin thread before you get started sewing. Threading a heavy duty sewing machine is a little different than a regular sewing machine, but once you've practiced it a few times, you'll be a pro!
And yes, my husband filmed it, and yes, I know he's not the greatest cameraman.
![](https://s2.save4k.ru/pic/z9tSKdngvak/mqdefault.jpg)