That would just remove the adapter bolt Fish posted. That would leave u a bolt for a cutter head or the like which you would need to buy a LH\RH nut.
(sorry I just noticed now, the yellow head with 6 pins- same as mine just not orange and not 8 pins)
BTW, don't get a trimmer head with 2 dangling chainsaw chains. It was sold by echo and stihl back in the 80's until it was recalled. My fs80 actually had that head. I read the recall only after one of the chains came off. Lucky I still have both ankles.