Unclogging Bissell Powerfresh Steam Cleaner

How to unclog a Bissell Powerfresh Steam Cleaner. Knocking Noise no steam. Mineral Deposits clog. I found that the weight on the end of the intake tube in the water container was clogged full of mineral deposits after this sat for about a year. I show how to get the weight, clean it, and test. I could find no other video showing how to do this. My wife and I always used distilled water per the instructions, but we strongly suspect our daughter put tap water into it.