How to overcome the dead point position of sewing machine pedal?

Pull the handwheel and drive the big wheel through the belt. When the movement rotates, the moment of inertia of the big wheel is equivalent to the flywheel, which successfully breaks through the dead center and rotates continuously.

Special sewing machine oil must be used to lubricate the sewing machine. The sewing machine should be fully oiled after continuous use for one or several days. If you refuel between uses, the machine should idle for a period of time, so that the oil can be fully saturated and the excess oil can be thrown out, and then the machine head and table top should be wiped clean with a clean soft cloth to avoid polluting sewing materials.

The pedal of the sewing machine is too heavy.

The sewing machine drive belt is too tight. The new belt is sometimes too tight, which leads to the unsmooth rotation of the belt, the heavy pedal and the lack of oil in the sewing machine. The pedal drive is short of oil, which increases mechanical friction. Therefore, the sewing machine pedal will be too heavy, and the sewing machine shaft will be wrapped with thread or wool. In the process of sewing, sewing thread often falls off and thread ends appear on the fabric. The tighter the winding, the smoother the sewing machine will turn, the heavier the sewing machine pedal and the dust on the sewing machine transmission shaft. In each mechanism part, because oil is easy to stick and adsorb dust, it is easy to adsorb dust in the related rotating shaft. The sewing machine is not running smoothly, and the sewing machine pedal is too heavy.