No problem. I would change the spark plug in mine, but for a full oil drain and refill it was next to impossible. I tried using a turkey baster to get the oil out, and it didn't work.
Something like this might work, though.
If you do remove the generator, though, get a hole saw and put a hole in where the oil drain is so that you can do it easily next time. I should have had the shop do that when they installed my replacement generator, but I just didn't think of it.