Old Tacsew

Question

I have an old tacsew that i recently acquired and It is very tight when i manually turn the wheel, but in addition to this The top thread will not pick up the bottom thread. I have replaced the bobbin case and i feel like this machine is going to be the death of me. If you are aware of an online manual (preferably .pdf format) please direct me.thank you in advance for your [e-mail]