Originally Posted by Egor
How does the carb work when you are under power? Do you seem to have normal throttle movement in the twist on the bars? In the pics it looks like everything is OK. I did have an engine that had a bad case gasket and it would not idle and was fussy, but would go OK. If the throttle cable is too short it will hold the throttle open also, check at the twist handle and make sure the boss is threaded in all the way. I have done a lot of mods to this little carb and it works OK with the mods, but you have a unique problem. Have fun, Dave
PS: Keep it up you will find the problem, and it is not electrical.
Sorry I am new to this terms...what is the boss? As far as the throttle goes..It springs back really good and is not short.