Abstract: A surface cleaning machine includes a chassis, wheels for supporting the chassis and a motor for moving the chassis. There are cleaning implements mounted on the chassis and there is a steering mechanism for use by an operator for directing movement of the chassis. The steering mechanism includes an operator movable control assembly and a coupling connected to it for causing turning movement of one or more of the chassis wheels. The chassis includes a first mount for the control assembly and a drive connection between the first mount and the coupling. The chassis includes a second mount for the control assembly and a drive connection between the second mount and the coupling. There is an operator manipulable attaching element for connecting the control assembly to either the first mount whereby the operator may drive the machine from a position seated upon the chassis or to the second mount whereby the operator may drive the machine from a position walking behind the chassis.