The City Council shall appoint the City Manager who shall be the administrative head of the Municipal government and who shall be responsible for the efficient administration of all departments of the City. The City Manager shall be appointed for an indefinite term, and appointed without regard to political beliefs and need not be a resident of the City when appointed; provided, however, that the Manager shall be come a resident of the City within a reasonable time after appointment. In the case of absence or disability of the City Manager, the Assistant City Manager shall perform the duties of the Manager. The City Manager may, at any time, be removed from office by a majority vote of the members of the City Council.