Unless it's cold where you live right now, it should easily crank with a few pumps of the throttle, even without a choke.
Otherwise do like Tod suggested.
After it sits a day or so and it won't crank, STOP and dont do anything else> remove air cleaner, look into the carb and move accelerator arm back and fourth a few times, if there is fuel in the bowl you should see gas squirting out of the accelerator pump nozzles, if you don't see fuel coming out of the nozzles the carb is empty and if that is the case all your doing by spraying the starter fluid on the air cleaner is giving the engine something to burn till the pump gets fuel back up to the carb.
If the bowl is empty - you either have a external or internal leak somewhere.
Visually look around the base of the carb and look for signs of dried fuel on the intake, it usually leaves a brownish to black residue. If it's internal, you'll have to remove the carb and see where it's leaking from.
It it were me and the carb is at fault , you said it was NEW from summit I'd send it back and get a replacement.
Goodluck, Cp