How to replace just the lever on a singer 2277

This says Service Manual, but not sure I trust it.

https://www.etsy.com/listing/1037785646/singer-2277-instruction-and-repair

Here is the User Manual

https://www.singer.com/en-ca/search/support?title=2277

..

Contact Singer.

https://www.singer.com/Tradition-2277-Sewing-Machine

hi Patricia.
this is all i could find out.
go to this link and it will give you step by step help.
Reassembly of Thread Take up Lever
or you could try this link as well might help you.
instructions on how to replace the thread take up lever on my singer 301...

Follow the link How to Oil Sewing Machine

Owner's manual is usually quite helpful. No manual? try MFG website, or their customer service email, or try manualslib.com

Make sure your buttonhole lever is all the way down (I think it probably is, if you it will sew some of the buttonhole), and also sure that your bobbin winder is not partially engaged. In other words, make sure it's all the way to the left.

when the needle broke, it could have damaged some part in the machine and also the machine could have jumped time,, having the machine checked would be a good idea..

here is a free manual for you, just click on the link

http://www.singerco.com/uploads/download/6c134640ad537f283ee190785ce9b64948415053.pdf

what is wrong with my machine the needle keeps jamming

sounds like a part is damaged or jamed, the machine needs to be checked
to see what's wrong with it