According to the owner's manual, there's electric motor oil as well as transmission oil. The 600 mile service calls for the transmission oil to be checked but the motor oil and coolant to be changed. There are also a number of inspections to be performed.
I've found that sometimes, service manuals will have more items to be checked and/or replaced than what the owner's manual specifies. The lack of a service manual to make sure is the only reason I could think of to let the dealer perform the 600 mile service rather than performing it yourself. That or if you're unsure about working around the high voltage components.
I have worked around high voltage for most of my life, so that's not an issue. BTW, that also means I have been zapped a few times by screwing up in one way or another.

I see the bike has a 300V battery.
Let's see, I have the owner's manual right here. Page 111 & 112:
tranny oil: change at 600 miles.
Motor oil:inspect at 600 miles, replace at 6,000 miles.
Inspect coolant at 600 miles, replace at 6,000 miles.
So it looks like only the tranny fluid is to be changed at 600 miles.
Is there any instructions or info., where the drain plugs are located and the amount of fluids required in the owner's manual? If so, I am not finding it.
-Don- Auburn, CA