In a few words yes.... Your genny is putting out 240 V AC which
can be split by the cord into 2 or more 120 V circuits.
I have a similar genny at home. It came with a cord set that
plugs into that funny looking 4 prong outlet you also have on yours.
The cord set splits into 4 120 V plugs.
I purchased and made up a cable that goes from that outlet
on my genny to a 240v connection on my home fuse box.
This allows me to power my entire house during a power failure.
(Can't run my home air conditioner or electric dryer but pretty much everything else will work.)
Go here and read up about 50 amp RV service requirements.
The 50-amp 120/240-volt 3 pole 4
It says in part that most 50 amp RV service is 2 circuits of
Since this is what your genny also says all you have to do is
connect the pins on each end correctly.
Be aware that your genny will not put out 2 "legs" of 50 amp power
but it will get the job done for most items in the RV.
In other words you can't use a clothes dryer or run both roof
AC units at the same time.
(Lesson in wattage-- watts = Amps x Volts)
Watts = 50 amps times 120 volts
Watts = 6000
Your RV has TWO 50 amp legs so it can theoretically
use as much as 12,000 watts.
Your genny is rated at 5500 watts.
Just don't try to turn on too many things at once!!
This is my take on your situation. If you have doubts about how
to connect these devices please seek the advice of a qualified
I'm just saying it will work if done correctly.