Do Sea Doos have crankshaft oil?

[laxexquis]

Hello,

I have a 2002 GTX RFI and am the second owner who bought in 2002. Ever since I have owned it I have never changed any type of oil and I have just assumed you don't need to, is this true? It doesn't seem possible that an engine can run without some type of lubricant.

So, do they have some type of oil that needs to be replaced?

Please excuse my newb-ness.

Thanks
John