UPDATE:
I wanted to wait until I discussed my concerns with Honda before commenting again, and I am now ready to put closure on this. The positive that has come out of this is that Honda has confirmed that my mower came with a full 60 month warranty, not the 36 months the dealer kept insisting it came with. To confirm, Honda called the dealership and informed them that my mower does indeed carry a 60 month warranty. The dealership said they did not remember anyone telling me that my mower only had a 36 month warranty, but both the service manager as well as the office receptionist told me this.
To back this up, Honda sent me a PDF of all the pertinent info regarding my mower such as service work already performed, purchase date, serial #, and length of warranty.
All of this has restored my faith in Honda’s willingness to honor their warranty, which based upon my history with this mower I will surely be using again. The down side to the story is I still have a mower that I believe to be a lemon, one that will not provide the kind of service I was expecting when I purchased it. At any rate , I now have almost two additional years of warranty that I was told I didn’t have back in January, and for that I am grateful.
Thanks to all who commented on this thread.