DSF

My Sub printer has just stopped printing yellow, I've ran the head cleaner a few time with the hope that would work... I did not.
I now think that I need to carry out an Ink flush It says that it will use a lot of ink but it does not say where this ink goes, are there any guides that could help me out please.

Thanks

Took the bull by the horns and just did a ink flush and crossed my fingers, no ink on my shag-pile and the yellow is printing again