FAQ Search Select a Category Cleaning Formulas Cleaning Tips Commercial Products Corporate Deep Cleaners Hard Floor Cleaners Mops, Brooms and Brushes Parts and Accessories Steam Sweepers Vacuums Warranty Web Site and/or go My Big Green Complete® collection tank keeps overflowing. What should I do? Answer: Please check out our easy steps to get your machine working properly. -The widest part of the float should be at the bottom. -Make sure the float isn’t stuck at the bottom. Don’t forget the float should move freely up and down. Related Questions My machine sprays water but no shampoo, what can I check? My ProHeat® Self-Propelled's Powerdrive isn't engaging. What can I do? My Deep Clean Premier® is leaving dirty spots on the carpet. What do I do? Where can I locate the model number and the serial number on my upright deep cleaner?