FAQ Search Select a Category Cleaning Formulas Cleaning Tips Corporate Deep Cleaners FAQ Hard Floor Cleaners Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go My PowerGlide® with Lift-Off® Technology is hard to push. What do I do? Answer: Auto Height Adjustment – no adjustment knob to turn. Make sure the brush is turning. If it is not, the machine will be hard to push. If necessary, check brush not rotating If you have a hose with "variable suction control" open the suction control. This should resolve the issue. This is described in the User Guide and will point out where on the hose it is located if you have this feature. Related Questions Why isn't there any suction with my Pet Grooming Tool? My screw broke while assembling my PowerForce® Bagless Vacuum. What can I do? My Garage Pro® blower mode is not functioning. What should I do? The handle on my Momentum or PowerTrak Cyclonic Vacuum is difficult to install. What can I do?