Uploaded September 2019 | Updated September 2026, 1 hour ago

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I am putting new parts on my Singer 331k (31k) industrial sewing machine, including replacing the tension unit, shuttle, hook etc. and converting the machine from an electric motor to a hand crank. I also show how I clean a machine and oil it to get it all working well. I briefly cover my plans for this machine. The Singer 331 is very similar to the Singer 31 sewing machine...just a newer model.