ok guys. I have an 81 550ltd and my #3 carb is leaking fuel out of the fuel bowl drain when the bike is running. I started by cleaning all the carbs and replacing the drain screw o-rings, but that didn't help. I decided to just rebuild all the carbs for piece of mind. I got done rebuilding them Saturday, and just a few hours ago got some time to hook everything back up, started the bike back up, and it is still leaking!!! What the Holy Hell is goin on?! Help guys, I know nothing about carbs and I'm stumped.

Thanks,
Ryan

Your float height is probably off causing the fuel to pour into the bowl even when it's too full. I haven't had a whole lot of experience with carbs but that's my best guess. I'd throw a thread up in the Jap forum and see if anyone else agrees with me. Oh and congrats on being the first to post a discussion on here! LOL

haha. no problem... I figured this would be best to post then the forum since everyone here are KZ riders.... haha

Let me know when you get the problem resolved so I know what the problem is if mine ever do that.

I had the same issue with 75 400 only when the bikes running it dosent leak only after i kill the bike does it slowly and imean slowly leak down the drain tube i went threw and checked all the same stuff you did even chcked the bowl level found a crack in the brass over flow tube and jb welded it up works fine you might think the crack is a manufacture seam looked factory too me till i got to messing around with it . holler at me let me know what yah found