If what you were trying to do was able to be done, do you not think that the owners manual would have made SOME mention of how to do it.
This is not a "TORX GT" as is being advertised on TV.
It does not appear to be a model with a rotating head.
The only way that this unit could be anything else than an edger is by putting a different power head on the handle.
Some units are turnable, bit this unit does not seem at all to have that feature.
SOmetimes the answer is...
I am sorry, you have been misinformed by a sales person.
Sometimes the correct answer is NO.
ALready two experts share this opinion with 3000 ANswered questions between them,
I was giving you the owners manual to show you that based on the parts list provided by the previous expert and the owners manual, that this is Not a feature of this unit.