Unboxed, assembled, but not yet used: Fairly easy to assemble. Only wish the screws had a hex shape to allow use of a wrench for the final one third of tightening. A bit hard to brace the unit then press and turn a manual screwdriver. If I still had 30 year old muscles it would've been easier. And though manual had good illustrations, there was none for the assembled axle+hitch pin. I couldn't understand the text description for that step but found an explanatory YouTube video. Overall, so far, 5 stars.
First time out, it is meeting expectations. In fact, more power than I anticipated. Isn't really built to pull behind you in grass but worked fine for the deck.