When starting the trimmer it starts up ok i have to go through pulling the cord twice on full choke and then on the third pull on half choke it starts up and i let it run for 20 seconds before switching it into no choke or he 3rd setting but when i do it stops going as fast as it was and decelerates and if i go to cut it barely does, slows down, or just stops completely. Its like if you were driving a car and were switching from 4th gear to 5th gear but when you switched the gear dropped down to 3rd or just broke.

Garden - Troy-Bilt - 25cc 2-Cycle Curved-Shaft Gas String Trimmer TB22 EC