I just got a 1988 Radian to teach my wife to ride. The bike was free. It has been sitting awhile. I drained and cleaned the gas tank and carbs. Now I can get it to start with the choke fully on, but as soon as I turn the choke off the bike dies. I know nothing about these type of bikes. Do I have a carb problem a timing problem or a valve adjustment problem? Dont know where to start. I did replace the needles, seats, and floats in the carbs. I did check the intake adaptors and they dont seam to be leaking. Like I said the bike was free and I really dont want to take it to a shop, and I also enjoy working on thses type of things. Any suggestions?

Check the Idle speed screw on the carb . had the same problem on my xs400j , i turned the screw and she started up fine and run great with out the choke after it warned up

I just got a 1988 Radian to teach my wife to ride. The bike was free. It has been sitting awhile. I drained and cleaned the gas tank and carbs. Now I can get it to start with the choke fully on, but as soon as I turn the choke off the bike dies. I know nothing about these type of bikes. Do I have a carb problem a timing problem or a valve adjustment problem? Dont know where to start. I did replace the needles, seats, and floats in the carbs. I did check the intake adaptors and they dont seam to be leaking. Like I said the bike was free and I really dont want to take it to a shop, and I also enjoy working on thses type of things. Any suggestions?

Make sure you got the idle passages clean when you cleaned the carbs as that will keep it from idling. At that age the o-ring around the idle mix screws may have deteriorated and need replaced, this may be hard to find depending on the carb.