When the president pro tempore of the legislative authority of a village becomes the mayor, the vacancy thus created shall be filled as provided in section 731.43 of the Revised Code, and the legislative authority shall elect another president pro tempore from its own number, who shall have the same rights, powers, and duties as his predecessor.
Vacancy when president pro tempore becomes mayor
Ohio Rev. Code Ann. § 731.11, under Chapter 731 | Organization.
Ohio Rev. Code Ann. § 731.11