Abstract: The present invention provides a bowling-lane maintenance machine having a driving mechanism which includes four turnable drive units and four lift cylinders. Each of the drive units includes a lane running wheel, a ride-on-approach and transverse running wheel having a diameter larger than that of the lane running wheel, and a drive motor operatively connected with the wheels. When the bowling-lane maintenance machine is moved on the approach by the rotation of the ride-on-approach and transverse running wheels, the lane running wheels will not be brought into contact with the surface of the approach. When the bowling-lane maintenance machine is lifted under the actuation of the lift cylinders, the drive units may be turned to change the direction of movement in which the machine is to be moved.