As with anything powered, the load is variable. It depends on so many things such as the compression of the engine, if it's a four stroke or a two stroke A four stroke has one compression cycle per two revolutions where a two stroke has one compression cycle per revolution, so the load would be greater with the two stroke than a four stroke.

And of course, the load will vary with different engine displacement and manufacturers.

I hate to be so broad with the reply, but that's pretty much the best answer someone could come up without knowing more.

CGr.