Contrary to others here, if it were me, and it was 7 years ago when we bought our home...If you are replacing the pump, replace the check valve and pipes as well. The entire run of a new PVC output is considerably less than the pump itself. This is especially true if you have galvanized steel pipe. That can easily corrode from the inside while looking fine on the outside.

Just because it doesn't run much does "Not" mean there is life left in it. What it really means for a sump pump is the bearings may be stuck in place, float switch may be stuck from lack of motion, the impeller may be jammed by dirt/debris. All of which could mean a flooded basement. The cost of a pump is cheap compared to repairing a flood. And because it is dry does not mean you shouldn't worry about it. Especially with our constantly changing climate. Hell who'd have though Texans would have needed bigger furnaces and snow shovels just a few years ago...

I'd replace the pump, the check valve and all piping. And if you sump doesn't run on its own dump a five gallon bucket of water in the sump pit a couple times a year to test and clear and debris that can get into the sump.