It is so unfortunate when these type things happen. I know you'd like to have that Honda. I also am a Honda fan.I am just waiting for a call from them at the moment. Due to having my car in the shop for service I won't be able to get the mower to the dealer until later this week. While I may be experiencing a bit of buyers remorse, I do know what's at stake; not being able buy a new Honda mower come spring 2024.
I currently have an HRS216 that runs well and after 3 seasons continues to amaze me with its cut quality and reliability. The hope was that this HRX would take over for the HRS in having a bagging option and superior mulching capabilities. I would hold onto the HRS as a backup mower and possibly for side jobs where it light weight and side discharge capabilities are useful.
I guess I am torn at the moment!
But, once I have this kind of problem with something that is new......well, I would have to return it.
I restore old Honda Motorcycles and have rebuilt Honda mowers and generators for people. I'm about as careful as a person can be....but, I've made mistakes. Trust me, I'm sure they have a good tech.....but, he doesn't care about your equipment at the same level as you do. I just simply would not accept what should be a brand new machine that has already been torn down once and now perhaps has to be done again. Even if by some miracle they get it running correctly, there will always be doubt and concern with it.
Get a full refund.
Even Honda makes bad items.
We bought a brand new Accord that pulled to the right so bad it was physically tiring to drive. The Honda dealer actually told us it was a safety device so that if you fell asleep while on a 2 lane road the car would run off the road to the right which would avoid a head on collision. We fought with that dealership for weeks and they couldn't fix that problem. It ruined that "new car experience ".
I finally called Honda Corporate in Japan. It took 10 minutes for them to find someone who could speak English. They flew a guy in from the Honda zone office in Dallas within 2 days. And we got a full refund.
Do what you have to do to return that mower that's giving you trouble from the very beginning.