1. What to do if the corn grinder vibrates fiercely? Fasten the loose bolts; adjust clearance of brush and the basket 2～3mm; change the damaged bearing.

2.What to do if the corn grinder outputs nonuniform granula? Use 25kg bran to press the grinding head tightly and grind for 1-2h; square the grinding head; change the bearing.

3. What to do if the grits and flour are mixed? Change the cloth; wrap the middle sieve rid 1-2 layers; the nylon cloth is no more than 70 mesh. What to do if the grits contain too many impurities? Increase hulling rate of the corn grinder; increase air flow.