When I did mine the other day, I emptied that box four times. (There's a lot more ground that I covered on the other two sides of the house.) That thing will fill up the box enough that it becomes difficult to lift up the rear end to initiate the dumping process, as you end up trying to round off the square edge of the packed leaf pieces inside.
It amazes me how much stuff that machine will cram into that box. I'd guess, with at least somewhat damp leaves, it probably holds about 200 lbs maybe? I'll have to try to weigh it someday when it's full.
OK, here it comes... all the history you never wanted to hear about...
I was thinking about leaf pick-up in the fall the other day, over the years I've been in this house -- now 35 years. Started out raking and using a push mower with a side bagger. The lawn mower worked fairly well, but when I'd get to the edges of the woods where the leaves were really thick, I could only go about 6 feet with that mower before the bag filled up and had to be emptied; raking onto a tarp... well that gets real old real fast. As you can imagine, fall leaf pick-up became a dreaded, very slow process.
A few years later, I hired a couple high school kids to do it; they showed up with a garden tractor with a fairly large collection bin on the back, and a Stihl backpack leaf blower. Then second year I called them only one kid showed up, so I asked to borrow the leaf blower to do the driveway while he did the lawn. Man was I impressed! Rocks, sticks, pine cones, leaves... that blower blew 'em all away! Two weeks later, I had my own Stihl leaf blower.
Used that for several years; it worked very well, but it sure took a long time to do the whole lawn, and of course it's annoyingly noisy. And if it's a windy day... well, forget it!
Then in February of 2008 I got my GC. With the flapper-damper removed from the MMM, that thing will shoot leaves quite a distance, but when they get real thick it doesn't work that well -- so out would come the leaf blower to finish up the edges and blast the leaves into the woods.
That method was my routine, until I got that Lawn & Leaf vac machine in September of 2016. The rest, as they say, is history.....