I have searched all over the internet and cant find a tutorial on how to replace the part in the picture i have attached. Does anybody know of a tutorial?

Looks like a mini X end Idler assembly. Here’s the assembly guide. for that particular part
https://ohai.lulzbot.com/project/9952b207-1dab-4084-921e-9a46a7fe734a/mini/
https://ohai.lulzbot.com/project/ed29ef49-0604-4b48-80bd-3cc12475f30d/mini/
and here is the printable part
http://download.lulzbot.com/Mini/1.03/production_parts/printed_parts/x_end_idler_Mini/
Looks like you will also need a couple M3 and M5 heat set inserts. Those can be bought in bulk from mcmaster Carr or purchased individually from ITworks3d.com https://itworks3d.com/product/metric-brass-heat-set-insert-plastics/
Thank you for your reply i really appreciate it!!
You’re welcome, we’re happy to help out around here, let us know if you have any other questions, and welcome to the forum!