No I don't think he drained it before letting it sit... The guy said he knew little about bikes and I'm on the same boat.. I barely learned understood how to work the petcock.. It does turn over.. I believe there's no fuel getting in..
I ended up getting a 1983 CB650.. It's been modified already and has gotten work recently... About 8 months ago it ran for about 2 months and has been sitting for 6 months... I have a receipt from mechanic that totaled close to 1300 dollars.. I charged the battery and seems good, but it won't...