My homelite weed eater idles to high - Homelite Garden

SOURCE: Homelite

Go to www.homelite.com then in the red up top click on order parts then click launch to parts catalog then scroll down to accept agreement and then you will need to enter your model # and then you can go thru the list of breakdowns and get your part # from the diagrams.

SOURCE: Weed eater GTI 17 won't run on high speed

A couple of things may work...
Make sure you have the correct Oil / Fuel mixture, if it is incorrect the motor may have problems running.
Also take off the bottom where the cord is wound up, make sure there hasn't been any grass get wound up inside it, this will cause it to stall out on high RPM.

SOURCE: weed eater stalling

Need to get the carb rebuilt..

SOURCE: gas weed eater pull cord wont retract after pulling cord

remove the cover and the screw holding the recoil down, turning the pulley ccw should release the spring then wind rope around pulley and (hopefully yours has the slot in it) wind in the direction of the pulley teeth then, holding rope in slot put back on spring and wind cw till almost tight, and install screw. Usually you can do this without taking rope handle off. sometimes you have to remove handle. look at spring end in the middle and make sure its not broke as long as you have it apart. Its a easy fix.
Thanks for using fixya

SOURCE: My Ryobi weed eater loses power at working speed after 5 minutes.

you need to replace fuel filter inside the fuel tank . fish it out with and empty tank using a coat hanger and a small hood bent on the end.filters are around $9.00