Threading and tension are two different things.
You can search for a manual:
Make Model manual
or
Make Model threading
(most machines thread similarly so even if you don't find your specific model, the instructions would be helpful)
https://www.manualslib.com/products/Singer-L47-4062252.html
When threading, be sure to ALWAYS RAISE the presser foot so the thread will seat completely in the tension disk.
For tension, generally start with the tension set at the midway point. Tension is correct when the top and bobbin threads meet in the middle of the fabric. If the bobbin thread is showing on the fabric top, loosen the top tension. If the top thread is showing on the underside of the fabric, tighten the top tension. Do not adjust the bobbin tension until it has been determined that the top tension does not make the adjustments needed. (Bobbin tension is sensitive--a little change makes a big affect so you will need to know how to reverse any changes you make.)
Understanding Thread Tension Threads
kenmore sewing machine 15358
dont no how to thread this machine
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