Oil Change LSV

So, I have decided to do my own maint to my Mobius LSV this season. Anyone give me any pointers on changing the oil in this rig. Have an automotive history so I know my way around a motor. Got a pump to suck the oil out of the dipstick, but the pump says to let the boat run for 3-5 minutes to warm up the oil. I thought my dealer was VERY stern on not starting the boat out of water??
Any Tips would be very helpfull, as I am going to do this tomorrow