Brother LS-2125 Mechanical Sewing Machine "snap wheel balancer" Questions

gumming up the needle. I cleaned the needle, but now I am just sewing on denim and the thread keeps snapping . It seems like the balance wheel is moving pretty hard. Any suggestions? Try cleaning your

...SNAP the thread into the first step of the thread path. Hold the thread taut with both hands as you pull it toward the front. You will feel the thread as it locks into the tensioner. Be sure the ...