First of all, you have to add gear oil, and then use two hands to adjust the two screws on both sides of the pressure grinding disk, (must be at the same time) after the hand can not screw, use a wrench and then tighten half a turn to a turn, and then lock tight. New machines need to break in, with fine flour sand plus ten percent of the waste oil mix well, (factory this company gift there, in a bag) repeatedly use about 1 hour. Then use dry corn and cooking oil (used machine oil is okay) for three to five days, after which you can dry corn and grass or add water directly out of the material. The new machine just started to work into the material should not be too fast, two hands grasping the material successively and evenly into the best. The water content of the processed material is eight to ten percent. After each use, you must work with dry corn kernels again until the material is discharged. (This operation is for the next use of the machine out of the material more smoothly, not to plug the hole.) . At the beginning of the fine sand plus waste oil is to save money, and later corn kernels plus cooking oil is to come out of the material can be used.