I have several Echo and JD/Echo trimmers. The coils seem to go bad every now and then.
I just bought a Echo GT-2000 trimmer at an auction. It was supposed to not start. This dealer has reputation of telling customers that things are way worse than they really are to just make a new sale. The trimmer I have I just needed/wanted the plastic shield at the bottom.
I can check it out and maybe the coil is good. It would be later this week at the earliest I would get to it.
Email me if you are interested in the coil. I would not want much for it.