Re: First time firing up the engine, problem! :(
That is caused by a very loose adjusted throttle cable. That would happen when you release the throttle hand grip and/ or twist the hand grip forward with said loose cable.
Follow bairdco's instructions carefully, especially on how to adjust the cable using the ""barrel adjuster" on the cap that screws into the top of the carb that holds the throttle cable housing".
Do not take shortcuts.
bairdco has done an awesome job describing the how to's and why's of cable adjustment and idle speed adjustment. They are, in a way, related to each other. If you cannot get the cable to adjust correctly, we will help you work it out.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."