Undertake, having the equipment (6)
I believe the answer is:
tackle
I believe this is a double definition.
'undertake' is the first definition.
(synonyms)
'the equipment' is the second definition.
(tackle is a kind of equipment)
'having' is the link.
(Other definitions for tackle that I've seen before include "Try to deal with something awkward - in rugby?" , "Grapple with - ship's running rigging" , "Undertake" , "Take on as in rugby" , "Try to deal with, rugby opponent or problem" .)