Get to work (5)
'get to work' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for start that I've seen before include "Onset" , "open" , "lead" , "Commence" , "Set in motion" .)
(Other definitions for repair that I've seen before include "darn?" , "resort" , "retire" , "service" , "Mend, restore to good condition" .)