The sewing machine is backwards
This failure is due to the angle of the upper crankshaft with the cam eccentric screw.
It can be seen that the eccentric position of the cam is very important.
So that the teeth before and after the toggle, and the fork and drive the shaft and the brackets, to promote the teeth before and after the reciprocating movement.
The teeth are so rhythmic to move forward.
In the sewing work sometimes appear to move forward, but to move the direction of the operator, that is, the material to the back.
