Singer 353–354 sewing machine service manual.
Examples include:
* Adjusting the bobbin case tension.
* Adjusting hook.
* Adjusting feed dog height.
* Adjusting pressure of presser foot.
* Testing the upper tension.
This manual has a great section on trouble shooting to solve your problem.
We also carry the full service manual and the instruction manual in out store.
53 page service manual.
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