I do most of my own repairs on almost everything. Not that I am that handy ambitious, or smart but with the gosh awful prices they charge for repairs these days it pays me about $150.00 an hour to put disc brakes an axle on my trucks in my garage. And in less time than the trip to and fro from the dealer. The generator is going back to the dealer. One too many things for me to deal with.
Nothing wrong with taking it back to the dealer, if it's under warranty. but I think you need to know how to get it running yourself.
In an outage there may not be an option to bring it in.
I've never had a small engine I couldn't start, even with all the carb issues, they will still start, just run like crap.
The guy that works for me, has become an expert at running these small engines, every time we take a piece equipment out of storage they need some attention. Often carb cleaning.
You need fuel, compression and spark.
First thing is to establish that you are getting spark, Usually you are, but you have to eliminate that potential before you do anything else. Pull the wire and hold it close to the plug, or pull the plug and hold the base to something grounded on the machine.
Next is to force feed it some fuel, the best surest way is to put a little right down in the cylinder from the plug hole.
Assuming you have compression, and spark, it has to start.
That will usually be enough to start the fuel prime thru the rest of the fuel system, you often will still need to clean the small jets and passages in the carb, but it should run, often needing partial to almost full choke. that's a clear indication that carb needs cleaning. If it wont stay running there is a more serious blockage in the fuel system, bowl float stuck etc.
In the future you need to run it more often.
Good Luck, JB