Das the fact Jack! What he said is spot on...use an appropriate filter, most of us use Purolator or wix and most use Mobil1 0w-40 synthetic oil. There are a ton of threads about the pros and cons of using factory stuff.
I did my first full change of fluids at 25 hours and every 50 hours for oil and 100 hours for all other fluids. This also depends on your type of riding and terrain.