New here--hoping for a bit of help...
I have 29" BMX made by Framed that I use to cruise around and basically go back and forth to work on. I was having some trouble with my chain being loose quite often and so I flipped it over and took it apart--and found that a lock washer had cracked and rubbed some metal off the piece it was sitting on (pics below).
Keeping in mind that I have never worked on a bike basically at all--even if I could find the right washer (I snapped a pic of the good one on the other side) I think whatever part the washer was riding on is no longer going to hold the washer in place. Is it difficult to replace this part or should I just take it to a bike shop? The bike cost $300 brand new so I don't really want to put alot into it. I could be wrong, but this is the axle not the hub right?