Needle Bar Adjustments
The needle is the most important part on the sewing machine, but the position and movement of the bar to which it connects controls the...
Upper Shaft Balance
The upper and lower shafts of a sewing machine must work perfectly in parallel or the balance of the machine becomes unstable. If the...
Find the Collar
The parabolic adjustment involves properly aligning the cam gear to the upper shaft gear. As the cam gear is turned, the linkage of...
Parabola - Dance of The Needle
Observe the dance of the needle as it moves from side to side. This graceful pattern must remain precise and consistent. The needle...
