(117) Resetting a Kwikset SmartKey cylinder

I got a question today about what to do if a SmartKey cylinder has been set to a random key or the key has been lost. This is a quick overview of what to do to manually reset the cylinder without resorting to specialist tools. And yes, I know I used the word "carefully" a lot in this video, but being careful is important when you are doing this sort of thing.