Hard on city to keep asking questions of purely local interest (6,4)
I believe the answer is:
parish pump
'of purely local interest' is the definition.
(I've seen this before)
'hard on city to keep asking' is the wordplay.
'hard' becomes 'h' (abbreviation used in pencil classifications).
'on' is a charade indicator (letters next to each other).
'city' becomes 'paris' (Paris is an example).
'to keep asking' becomes 'pump' (as in pumping someone for answers).
'h' put after 'paris' is 'parish'.
'parish'+'pump'='PARISH PUMP'
'questions' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for parish pump that I've seen before include "(Supposed scene of matters) of only local interest" , "Water supply (for the local district only)" , "Local water supply, symbol of insularity" , "purely local interest" , "localised" .)