Howdy! I would not throw it away. The more work you do on it, the closer you get to understanding the machine; and others. Cheap machines can work very well if you you look after them and take the time to reset them for optimum performance. A lot of dudes restore old machines, even the cheaper ones. You may be able to pick up a second hand one for $7 at a community market; not going, for spares. Also look at some hard trash gear in your local area, at specified times. I met a guy the other the day that purchased a ship container load of various old chain saws etc. Even if you loose money, it is great to see your project running! I suspect you may have a pop off pressure problem. You really need to understand your own machine when dealing with older 2 stroke engines. Cheers and good luck!
