Loosen two fasten bolts on the seat of driven gear shaft, put the pad of required height to keep the balance of support plate, and ensure the even cutting.

The other speed shifting mechanism is a shaft of the driven gear that is provided with a tooth driving wheel that puts the roll shaft in motion through transmission.

The diameter of the driven gear is smaller than that of the press mounting gear, and the driven gear is fixed at the middle part of the shell through a shaft.