THANK YOU MAN !!!
yes that was it!!
vertical to the blade were 2 small pins, one adjusts the lever movement and one was holding the pin that holds the lever
before asking here I saw that small pin, i unscrew it but did not think to simply push the pin out :)) i had to push it down with a thin thing and lever came out. now I could replace old cilinder with that echo tr repair kit. new piston,cilinder everything.
works nice!
Have beautiful week!
Cheers