How do I replace the carbon brushes on hedge trimmer GT 249

many of these trimmers simply have two large plastic screws on opposite sides of the motor assembly. just screw out the old ones and screw in the new

Depending on the make and model, there may be a plastic cap or screw holding them in place. Watch they spring doesen't fly out when you remove the cap.

take off the muffler and try it if ok with the muffler off open the muffler and clean the carbon from the screen

this worked for me just now
http://www.stihldealer.net/videolibrary/OnePlayer.aspx?v=27&vt=27&vb=2&id=27

cut the bad part out,then strip the outer insulation off carefully as not to knick the inner insulation,then strip off all wire ends appx 3/4" to 1" and twist the black wire to the other black wire and tape securely so no bare wires are showing,then do the same with the white/white wires and then green/green ground wires and finally tape the whole thing to keep out moisture with electrical tape from most hardware/d.i.y. stores

same thing on my weedeater 22inch. i rebuilt the carb.. id not fix. my guess is you are getting fire to theplug. check with a plug tester.. if no fire, not much you can do except dissasemble to replace ignition

check with a small engine shop near you to see if they can get these parts for you.or you might fine them at www.partstree.com.
let me know what you fine out.ok

The brushes for the trimmer is no longer available, so unless you can find someone who has old stock of the part, your going to have to replace this one.

You can go directly thru ryobi at www.ryobi.com they can help you get the parts you need.