I believe that going to be the GT-2150. What I finding on it, it is considered a brushcutter trimmer. To me a curve shaft model just isn't designed to be a brushcutter but this model does have a clutch so it is possible. Doesn't appear to have been available here under that model number.
If it is the GT-2150 then it has a Zama C1U-K53 cube carby. Doesn't appear to have any of the tamper resistant caps installed. As said most likely you will need at least the metering diaphragm and maybe the internal filter screen.
Tyler here the Zama rotary barrels on Echos normal have EPA plugs installed on mixture adjustments. They easily removed if no one tried to get them without the extractor which is 2.5 screw size. The Echo tool is 2.5 left handed threaded. They also sell a 3 mm one just in case someone has stripped the plug.
