If you don't want ANY issues with a buyer then be as honest as you can be. I sold my kids 71 cb350 twin on ebay a few years ago, I took lots of pics even of flaws the bike had so the buyer had a pretty good idea what they were bidding on. The kid that bought it was a college student just like my son and his first bike, he showed up with his dad and the bike was exactly how they expected it to be. I was satisfied with the price, they were pleased with the bike so everyone was happy and I got a positive feedback for my ebay account.
Also make it clear that the buyer will have full responsibility in regards to shipping/delivery of the bike. In my case the buyer lived about 2 hrs away so he and his dad picked it up themselves.
+1
Don't overstate the condition, be honest and realistic. Also, the last motorcycle I sold expired with a "Buy it now" as the only option. I relisted auction style the second time and I set the reserve equal to the previous "but it now" price with an opening bid of $100. Ended up getting an additional 50% OVER the reserve! So set the reserve at the minimum amount you're willing to accept, set a low opening bid, and let the bidding frenzy begin!
Per Ebay rules, which I believe to be a result of laws pertaining to the sale of used vehicles, the winning bidder can refuse to complete the sale with no repercussions. You can require a non-refundable deposit via Paypal as long as that condition is clearly stated.
Hope your sale goes well.
