An inkjet printer comprising: a printhead cartridge with a printhead and a maintenance station for engaging the printhead when not in use; a printer body with a cradle for receiving the cartridge, and a maintenance station drive shaft for detachably engaging the maintenance station upon insertion of the printhead cartridge into the cradle, the maintenance station drive shaft having an engagement formation for engaging a complementary formation in the maintenance station; such that, when engaging the complementary formation, the engagement formation has limited axial displacement and limited transverse displacement.