I have a cs30 ryobi weedeater and something in the shaft is causing the weedeater to either stall out or completely shut off, how can i fix this problem?

Usually this is a fuel supply problem. It can be caused by a cracked fuel line, debris in the fuel tank of in the tank to carb fuel connection. If you have a primer bulb a pin hole in the primer bulb or (if so equipped) the line that goes to the primer bulb it will do the same thing. Small air leaks will cause the trimmer to run fine at idle but anytime you demand more speed it just will not speed up or it will stall. Additionally the diaphragm in the carb can also have a small hole or tear in it. (Located under the 4 small screw plate on the carb)

A problem in the shaft is rare unless the shaft itself breaks or the internal flexible drive shaft has a partial break and the spring material is unwinding. If this is the case the flexible drive shaft will have to be replaced. It requires removal of the engine from the curved shaft assy to replace. Once the engine is removed the shaft is supposed to just pull out. WHen installing a new shaft you must make sure the 4 sided drive spline drops into the string head or you an not install the engine correctly. The same goes for the engine to shaft mating area. Align the 4 sided spline.

Thanks for choosing FixYa.

Kelly