[VAC] how to clean up toilet tanks release handle to rear of toilet

["C. Hale" <chale@xxxxxxx>]

Hi all,
I need some advise:
I'm trying to clean up the brass? turn handle that is the release to the
black water drain.  It's located on the deck to the rear of the toilet
platform.  It's very blue-brown corroded looking and I want to clean it up
before I lay new flooring.  I'm worried that strong cleaners might damage
the fiberglass tank...
Please advise.
Cindy