The leak indicator on the water meter will spin backwards 1/2 turn or so. Is this normal?
We have low water pressure after a leak we fixed and the water company is reluctant to check the meter for problems.
I would not worry if the tiny spinner in the meter turns back a half turn. If it went several turns or kept going then I would worry.
By the way, if there is no backflow perventer it is possible for the normal expansion of water to push some back into the water main as each new tankful of water in the water heater is heated.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.