1. Unplug machine right after cleaning. 2. Tilt machine back and remove pad driver or brush. 3. Clean the outside of the machine with a mild cleaner. 4. Check power cord for any damage. If damage is detected, cord must be replaced immediately by authorized personnel. 5. Lubricate wheels with a water resistant lubricant once a month. 6. Check machine for loose or missing nuts and bolts, and replace asnecessary. 7.