"WARNING: Generators sold in Canada with CSA certification have the neutral bonded to the frame in compliance with CSA standards. Disconnecting the neutral bond will void the CSA certification of the generator."
There are at least 2 ways to interpret this statement:
1) CSA requires the neutral to be bonded on all generators, or 2) CSA requires the neutral to be bonded on THIS generator. #1 is the obvious interpretation that IMO most people would choose. Since the generator is labeled as having a bonded neutral, disconnecting the bond is "illegal" unless the labeling is also changed, which I believe is the correct interpretation. The Internet is full of documents, many from Canadian governmental agencies, that clearly state the neutral can be bonded or not bonded, and the generator must be labeled as such. Here's one example from Schnieder Electric with references to the CSA chapters:
Schneider Application Note .
I found a picture of the eu2000kc2 panel. Above the AC outlet it's labeled "Neutral Floating" and "Neutre Flottant".
As far a paralleling 2 generators with a bonded neutral goes, I believe it would be OK safety-wise if the connection cable was polarized, which the Honda cable isn't. I think the big mystery is why Honda Canada sells parallel capability for the eu1000, but not the eu2000.