Hi.. Yes I am one of those RTFM guys and reading the 212CC Manual I also encountered the mysterious "Check Deposit Cup"... Like here:
After a LOT of searching I found this from a Lifan (A similar clone) manual:
So, that is a small separate cup that in right at the fuel inlet and catches "deposits" that, I suppose, have been deposited there.
BUT the HF 212CC engine I just bought looks like this in that area:
The red mark is where the "Deposit Cup" would be if it HAD a deposit cup like the Lifan. But it don't..
It looks like the main thing that WAS copied from Honda / Lifan was a page of the MANUAL.....
I DO drain the fuel with the angled drain plug a couple times a year. SoFarSoGood on 2 13HP and 3 6.5HP I have running...
Hope this will be found with a search for the Next Guy....
Regards, terry at terryking dot us