Disinclined to be part of lifesaver's experiment (6)
I believe the answer is:
averse
'disinclined to' is the definition.
(I've seen this before)
'part of lifesaver's experiment' is the wordplay.
'part of' says the answer is hidden in the clue.
'AVERSE' is hidden within 'lifesavers experiment'.
'be' acts as a link.
(Other definitions for averse that I've seen before include "Disinclined - as ever (anag)" , "A piece of poetry is reluctant" , "Indisposed" , "Disinclined - sounds like a poem" , "'Opposed, disinclined (6)'" .)