Pull the collar up on the quick disconnect and it will pop off. Easy.
I cut off all the HD clamps! F those things. I went old school with normal ones.

 

Yep what he said... pull up on that chrome piece and the line will pop out... with out gas every where also... simple.

And i did the same as stated above. Screw those HD clamps go to your local auto store and grab some new ones that are easier to manage.

 

Damn...that was way too easy. Are these types of tips included in the service manual? (Thanks for the help!)

 

Doesn't mention anything about using vise grips

 

Careful with those little screw-type hose clamps ...!

... the ends can put some pretty good gouges in the top of your rocker boxes when you replace the tank or if you do any future work and move the tank and/or rocker boxes ....

 

I just cut the crossover line in two. After one slip of a tool f**king around with those stock H-D clamps in that small space, I realized that I'd rather spend a couple bucks for a new hose and good clamps rather than mar up paint or chrome. I just pulled off the clamps and old hose after I had the tank off. It was much easier that way.

EDIT:
...and YES, the service manual is an essential tool, if you are gonna be wrenching yourself.

 

FYI on the service manuals- you can get them on eBay for $10 on CD. You can print as needed or just take the laptop to the garage. I have both and they are the same. (book and CD)
For $10 it is a no brainer...

 

,, someone is getting the manual,, Amazing what we can learn and do with the proper directions...

At least be glad U haven't fudged up anything so far..

 

s.o.b. chit how'd ya know that 1?
im busted . good thing its under tank where not many can see
yes i gat scratch all right