Got it, thanks.
Do you know if the T35 replacement head will fit the 223L? I bought the T25, but it is much smaller then the current head. Any thoughts?
Eugene,
Thanks for the answer, but this 223L has no hole for a locking rod. I had read what you said in the instructions sent with the replacement trimmer head, but the only hole that is in the gear box is a nut where you put the grease in for the shaft. I removed the nut, inserted a rod, but there was no gap for locking. Is the only alternative to get a large pair of channel-locks and grip the flange above the trimmer head and hold it in place like that?