Draw warmth. He goes after sun remedy (9)
I believe the answer is:
unsheathe
'draw' is the definition.
(unsheathing is a kind of drawing)
'warmth he goes after sun remedy' is the wordplay.
'warmth' becomes 'heat' (synonyms).
'goes after' is a charade indicator (letters next to each other).
'remedy' is an anagram indicator (I've seen this in other clues).
'sun' anagrammed gives 'uns'.
'heat'+'he'='heathe'
'heathe' after 'uns' is 'UNSHEATHE'.
(Other definitions for unsheathe that I've seen before include "Pull out (a blade)" , "Take out of scabbard" , "Remove from cover like sword" , "Draw (a sword)" , "Draw (weapon)" .)