After some bowling on ground, I'm yet to get some spin: wait before able to perform again (8,4)

'wait before able to perform again' is the definition.
(time before a machine can perform again)

'after some bowling on ground i'm yet to get some spin' is the wordplay.
I cannot really understand how this works, but
'bowling' could be 'over' (cricket term) and 'over' is present in the answer.
'on' could be 're' ('on' can be mean 'with reference to') and 're' is found within the answer.
'i'm' could be 'me' (both refer to the person speaking or writing) and 'me' is found within the answer.
This may be the basis of the clue (or it may be nonsense).