Except as otherwise provided in the charter, the city manager shall be the head of the administrative branch of the city government. He shall be responsible to the council for the proper and efficient administration of all affairs of the city under his authority, and to that end, except as otherwise provided in this charter, he shall have the power and shall be required to:
(1) Appoint and, when he deems it necessary or advisable, remove all officers and employees of the city except as otherwise provided by this charter or by general law, and except as he may authorize the head of a department or office to appoint and remove subordinates in such department or office.
(2) Prepare the annual budget, submit it to the council for adoption, and be responsible for its administration after adoption.
(3) Prepare and submit to the council as of the end of each fiscal year a complete report on the finances and administrative activities of the city for the preceding year.
(4) Advise the council with respect to future plans and physical needs, and keep it informed concerning the current financial condition of the city.
(5) Require the chief of police and the chief of the fire department to establish for their respective departments a course of training designed to promote the more efficient and safe operation of their departments.
(6) Execute on behalf of the city all legal and other written documents requiring execution by the chief executive officer of the city, acknowledge the same if necessary, and perform all other acts and duties required of the chief executive officer of the city.
(7) Perform such other duties as may be required of him by this charter, by general law, or by order of the council not inconsistent with this charter or with general law.
The manager may by letter filed with the city clerk designate some qualified administrative officer of the city to perform the duties of the manager during his temporary absence or disability. If the manager fails to make such designation, the council may by resolution appoint an officer of the city to act for the manager during his absence or disability.