forfeiture.] The sheriff of the proper county shall serve the warrant mentioned in the preceding section [67-5-10 N.M. Stat. Ann.] by delivering a copy to each of the viewers named therein, and the original shall be returned to the county clerk with his endorsement of service made thereon. Any person appointed road viewer and duly served with a warrant, who shall willfully neglect or refuse to act, shall forfeit the sum of twenty-five dollars ($25) to the county.