Adjusts (6)
I believe the answer is:
adapts
'adjusts' is the definition.
('adapt' can be a synonym of 'adjust')
This is all the clue.
(Other definitions for adapts that I've seen before include "Changes to suit new requirements" , "Converts to another usage" , "Change to fit new circumstances" , "Changes to suit another purpose" , "Changes to suit different circumstances" .)