Shark steamer doesn't work

Question

I purchased a new Shark steamer from Overstock.com.I read the manual and followed the instructions with the minor exception that using 8oz of water caused the steamer to overflow, so I used 6oz of water instead.I plugged it in and though it got hot, I could not get any steam out of it. I tried for 45 minutes and finally unplugged it. I tried it again several hours later and still was unable to get steam to come out. Suggestions?