petcock removal

[fre2drm]

Help! After removing my 2001 750 from storage, it has started leaking fuel out of the Petcock. Since I am new to home repairs, I require assistance as to how remove the components to reach the problem. I am under the impression that this is a diaphragm problem, but first I need to access it!
Anyone with step by step instructions would be quite helpful as even on Utube I cannot find a similar bike video.

[92xjunker]

Hmmm, drain the tank, remove the hoses, remove the screws that hold it in, remove the diaphragm screws.....