Take pains to get money from Russia after start of tour (7)
I believe the answer is:
trouble
'take pains' is the definition.
(thesaurus)
'money from russia after start of tour' is the wordplay.
'money from russia' becomes 'rouble' (Russian currency).
'after' means one lot of letters go next to another.
'start of' suggests taking the first letters.
The initial letter of 'tour' is 't'.
'rouble' put after 't' is 'TROUBLE'.
'to get' is the link.
(Other definitions for trouble that I've seen before include "Pains" , "Dire straits" , "Anxiety - disturbance - problem" , "Misfortune" , "Nuisance, bother" .)