I have to say I wouldn't touch a cheap chinese outboard but.....
I bought a brand new suzuki 2.5 and started the run in period as described, ran it for 2 hours and put it away having run the fuel out and let the water drain out, a month later dragged it out to put some more gentle hours on it and it wouldn't start, eventually checked the plug to see if I'd flooded it to see it bone dry, put finger over the hole and pulled as a matter of habit to find no compression so took rocker cover off to check valve clearances, Mmmmm why is there only one pushrod and a rocker flapping around??
Exhaust valve had stuck open so when I pulled the starter cord the pushrod dropped into the sump, needed the motor quicker than a warranty job was going to take so got valve moving with soft rope down the plughole and a gentle turnover to push it shut and managed to fish the pushrod out through the filler plug with a magnet on the end of a bit of wire and put back together, luckily it has been fine since but don't just assume a branded jap engine will be perfect.
Still wouldn't buy a cheap chinese one though, I'm probably just stupid!