1, from the date of purchase, under normal circumstances, if within three months because of manufacturing quality problems, the factory will provide free repair or replacement of parts. 2, due to improper operation of the user, overload, crash into parts or unit damage caused by foreign bodies such as reasons, factory service, all fees shall be borne by the user. 3, the standard parts such as bearings, bolts, belts are not within the three bags. 4 motor free warranty for one year. As to repair difficulties, machine can be mailed back to our company. You will get a free repair. (Due to improper operation of the user, and motor damage will be charged appropriate fees)