Unless you have a rusty gas tank.....you are not likely to need to clean anything.  The fuel that comes out of the pumps is filtered and clean when it goes into your tank.

Dave

Noop... I never do...
...but,... I do turn the Pet to Reserve once or twice a year (when I think of it),... to pull some fuel down the reserve tap...
Mostly superstition... maybe?.... ...

...(I carry a couple of t-shirt sleeves)... to use as... (wrist bands to block cold winds, rags to mop up, headband, neckerchief, faceshield cleaner,... and...
...I hang one on the throttle to remind me that I turned the Pet off to park... or I hang one over a mirror, to remind me that I put the Pet on Reserve)...
...it's my motorcycle... post-it... ...   ...( If I see a T-shirt sleeve hangin' on my bike... I know I did somethin' weird)...
...just got to figure out what... ...