A printhead maintenance facility for an inkjet printer having a pagewidth printhead and a media path for feeding sheets of media substrate in a media feed direction wherein the pagewidth printhead has a nozzle face defining an elongate array of nozzles extending the printing width of the media substrate. The printhead maintenance facility has a wiper member extending the length of the nozzle array, a chassis for supporting the wiper member and a maintenance drive for moving the wiper member towards, and away from, the nozzle face, the maintenance drive being configured to apply a moving force to the chassis at a first bearing point proximate one end of the wiper member, and configured to apply an equal moving force to the chassis at a second bearing point proximate the other end of the wiper member. The first bearing point and the second bearing point are equidistant from a longitudinal mid-point of the wiper member.