Adjust the variable suction control on the hose. The more open it is, the easier the machine will push. The arrow on the suction control knob will show you where you have the suction control set to. (In the photo below, the arrow on the suction control knob is showing to the + meaning the variable suction valve is closed which can make the machine hard to push. If turn toward the direction of the red arrow - it will open the suction valve allowing less suction. Adjust until the machine can be pushed comfortably).