Re: so how do i clean or take care of my KM hose if its none washable?
There's no need to discard this hose unless you've already exposed it to water. Non-washable hoses can be maintained using compressed air, as has been stated. The black stuff is probably a build up of resins, or, if the hose has been exposed to moisture, rust or broken down pieces of the hose itself. I have several non-washable hoses which I've been using for years and the perform fine when properly maintained.