Loosen the fuel cap and see if the problem continues. Maybe the vent line has a crimp...

Ok, I'll give that a try. Thanks.

I checked out all the lines and everything appeared fine. I tried loosening the gas cap, but unfortunately, the sputter and surge still happened. Just can't imagine why a brand new engine would be faltering already.

At this juncture, it may be best to consider your options. Check w/ Lowes and see if they would return it for an exchange. That would be the easiest solution. Could it be something in the fuel, a choke not pulling off, a funky spark plug? That's why you bought a new mower so not to have an issue. If it is found to be fuel related, you may get a bill rather than a warranty claim.

If this is a auto choke system then you have a problem with the choke,

As I have said in many posts remove the air cleaner and after it is started insert a thin item like a screwdriver and force the choke to stay open.

If this works then you have a choke problem.

Yes, if it is new then take it back.

Thanks for the replies. O.k. so I think I'll give the mower one more once over to check out the things you guys mentioned. Then I'll contact Lowe's to see what they have to say. Thanks again.