Generators; How Level is Level?

[Rmack1]

I was running my Yamaha EF2000iS and I noticed from the side that it didn't seem perfectly level. The manual just says 'level'.

It's hard to get it perfect on the rocky ground I'm camping around. How level is level?

I put my small level on it, and sure enough, about half the bubble was out of the line. What's that, a couple of degrees maybe?

Is this close enough, or should I use shims or something to get it perfect?

[Trackrig]

If you can comfortably stand on the ground, it's level enough for the generator.

Bill