ATV Collector
11-30-2010, 03:12 AM
I have a 1981 yamaha YT 125 2 stroke. It starts up fine and runs good as long as you have your thumb on the throttle. As soon as you let off the throttle it dies. Also when you ride it, it runs through 1,2,and 3 fine but in 4th and 5th you can only run it half throttle. If you try to run it full throttle it just stalls out until you let off the throttle. I've cleaned the carb several times. Any advice on what I should try next would be greatly appreciated.